System and method for routing-based internet security

• US 9,177,157 B2
• Filed: 12/14/2011
• Issued: 11/03/2015
• Est. Priority Date: 12/22/2010
• Status: Active Grant

• Current Assignee: May Patents Ltd.
• Original Assignee: May Patents Ltd.
• Inventors: Binder, Yehuda
• Primary Examiner(s): BAYARD, DJENANE M
• Application Number:
  US13/325,438
• Publication Number:
  US 20120166582A1
• Time in Patent Office: 1,420 Days
• US Class Current: 1/1
• CPC Class Codes: G06F 21/602 Providing cryptographic facilities or services
• CPC Class Codes: G06F 21/78 to assure secure storage of data address-based protection against unauthorised use of memory G06F12/14; record carriers for use with machines and with at least a part designed to carry digital markings G06K19/00
• CPC Class Codes: G06F 21/80 in storage media based on magnetic or optical technology, e.g. disks with sectors preventing unauthorised reproduction or copying of disc-type recordable media G11B20/00
• CPC Class Codes: G06F 21/85 interconnection devices, e.g. bus-connected or in-line devices
• CPC Class Codes: G06F 7/58 Random or pseudo-random number generators
• CPC Class Codes: H04L 51/046 Interoperability with other network applications or services
• CPC Class Codes: H04L 63/0281 Proxies
• CPC Class Codes: H04L 63/0428 wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 63/18 using different networks or channels, e.g. using out of band channels cryptographic mechanisms or cryptographic arrangements for key distribution involving distinctive intermediate devices or communication paths H04L9/0827; cryptographic mechanisms or cryptographic arrangements for authentication using a plurality of channels H04L9/3215
• CPC Class Codes: H04L 67/63 Routing a service request depending on the request content or context

Abstract

Method and system for improving the security of storing digital data in a memory or its delivery as a message over the Internet from a sender to a receiver using one or more hops is disclosed. The message is split at the sender into multiple overlapping or non-overlapping slices according to a slicing scheme, and the slices are encapsulated in packets each destined to a different relay server as an intermediate node according to a delivery scheme. The relay servers relay the received slices to another other relay server or to the receiver. Upon receiving all the packets containing all the slices, the receiver combines the slices reversing the slicing scheme, whereby reconstructing the message sent.

Claims

1. A method for improving the security of transferring a message that includes a succession of message elements from a sender location to a recipient location over multiple paths in the Internet using a plurality of intermediate servers, wherein the sender location, the recipient location and the servers are each associated with an IP (Internet Protocol) address for being addressable in the Internet, the method comprising the steps of:

(a) partitioning the message into a plurality of message slices, each message slice contains at least one of the message elements;

(b) assigning an intermediate server, selected from the plurality of intermediate servers, to one or more message slices;

(c) sending the one or more message slices together with the IP address of the recipient location to the intermediate server;

(d) receiving and identifying, by the intermediate server, the one or more message slices and the IP address of the recipient location;

(e) partitioning, by the intermediate server, one of the received message slices into a plurality of sub-slices, each sub-slice containing one or more of said message elements; and

(f) sending, by the intermediate server, the sub-slices with the IP address of the recipient location to another intermediate server or to the recipient location.

2. The method according to claim 1, further comprising the steps of:

encrypting at least part of the message slices after said partitioning step; and

decrypting the at least part of the message slices having at least an encrypted part at the intermediate server prior to said step of sending of the message slices or sub-slices to another intermediate server or to the recipient location.

3. The method according to claim 1, further comprising the step of encrypting a message slice at the intermediate server after the slice is received at the intermediate server.

4. The method according to claim 3, wherein the recipient steps and the intermediate server steps are both executed by the same processor.

5. The method according to claim 1, wherein at least one out of a plurality of intermediate servers executes at least the steps of:

(a) receiving and identifying each message slice assigned to the intermediate server and the IP address of the recipient location; and

(b) sending each received message slice with the IP address of the recipient location to another server.

6. The method according to claim 5, further comprising operating at least one of the intermediate servers to store at least one of:

the assigned message slice;

the IP address of the sender location; and

the IP address of the recipient location.

7. An apparatus comprising:

a memory; and

a processor configured by said memory to perform the method of claim 5.

8. The method according to claim 1, further comprising, at the recipient location, at least the steps of:

(a) receiving and identifying a plurality of the message slices; and

(c) reconstructing at least part of the message as it existed before said partitioning step.

9. The method according to claim 8, further comprising the preliminary step of encrypting the message before said partitioning step, wherein said partitioning step is carried out on the encrypted message, and decrypting the encrypted message at the recipient location after said reconstructing step.

10. The method according to claim 8, further comprising encrypting at least part of the message slices after said partitioning step, and decrypting the encrypted message at the recipient location after said reconstructing step.

11. An apparatus comprising:

a memory; and

a processor configured by said memory to perform the method of claim 8.

12. The method according to claim 1, further comprising a preliminary step of determining the number of message slices into which the message is to be partitioned, and wherein said step of partitioning the message is carried out to partition the message into the determined number of message slices.

13. The method according to claim 12, wherein the number of message slices to use for the message partitioning is a randomly generated number.

14. The method according to claim 1, further comprising a preliminary step of determining the number of message elements in each of the message slices, and wherein said step of partitioning the message is carried out to partition the message into message slices each having the respective determined number of message elements.

15. The method according to claim 14, wherein part of or all message slices have the same number of message elements.

16. The method according to claim 14, wherein the number of message elements included in each of the message slices is a randomly generated number.

17. The method according to claim 1, wherein said step of partitioning is carried so that each of the message elements is included in only one message slice.

18. The method according to claim 1, wherein each of the message elements is included in at least two message slices.

19. The method according to claim 1, wherein the message elements in at least one of the message slices follow one another in the same order as in the message.

20. The method according to claim 1, wherein the message elements in at least one of the message slices follow one another in an order different from the order of the same message elements in the message.

21. The method according to claim 20, where the message elements in at least one of the message slices are separated by at least one intervening element in the message.

22. The method according to claim 1, wherein said each of said message elements is a bit, a nibble, a byte, or a multi-byte word.

23. The method according to claim 1, wherein said each of said message elements represents a number, a character or a letter.

24. The method according to claim 1, further comprising a preliminary step of padding the message.

25. The method according to claim 1, wherein at least one of the message slices is padded.

26. The method according to claim 1, wherein said partitioning into slices is performed based on the current date or the current TOD (Time-of-Day).

27. The method according to claim 1, wherein information about the partitioning step is sent together with one of the message slices.

28. The method according to claim 1, wherein information about a message slice is sent together with a different slice.

29. The method according to claim 1, further comprising a preliminary step of encrypting the message before said partitioning step, and said partitioning step is performed on the encrypted message.

30. The method according to claim 1, further comprising encrypting at least part of the message slices after the partition step.

31. The method according to claim 1, wherein at least two of said intermediate servers are located at geographically disparate locations.

32. The method according to claim 31, wherein at least two of said intermediate servers are located in different cities, in different states, in different countries, or on different continents.

33. The method according to claim 31, further comprising the preliminary step of providing at least two of the intermediate servers and locating the at least two intermediate servers at geographically disparate locations.

34. The method according to claim 1, further comprising the preliminary step of storing a list composed of a plurality of IP addresses of available intermediate servers.

35. The method according to claim 34, wherein at least one respective message slice is assigned to each of the intermediate servers in said list.

36. The method according to claim 34, wherein a respective intermediate server in said list is associated with each message slice.

37. The method according to claim 34, wherein at least one of the intermediate servers in said list is not associated with a message slice.

38. The method according to claim 34, wherein the addresses of the intermediate servers in said list are sequentially assigned to a respective one of a succession of message slices.

39. The method according to claim 34, wherein for each message slice, an intermediate server is randomly selected from said list.

40. The method according to claim 34, wherein a geographical location is associated with each intermediate server in said list, and the intermediate servers are selected for assignment from the list based on their geographical location.

41. The method according to claim 34, wherein, for each message slice, an intermediate server is selected based on a former selection for a message or message slice.

42. The method according to claim 34, wherein, for each message slice, an intermediate server is selected based on the current date, or the current TOD (Time-of-Day).

43. The method according to claim 1, wherein the order of sending the message slices is based on the order of the first message element in each message slice in the message.

44. The method according to claim 1, wherein the order of sending the message slices is selected at random.

45. The method according to claim 1, wherein said intermediate servers are dedicated servers, and the method further comprising the preliminary step of providing the plurality of intermediate servers.

46. The method according to claim 1, wherein said intermediate servers are integrated with other servers having a specific distinct, different functionality.

47. The method according to claim 46, wherein at least one of the other servers is one of:

a web server;

a database server;

a mail server;

a FTP server; and

a DNS server.

48. The method according to claim 46, wherein at least one of said intermediate servers shares with the other server one of:

an enclosure;

an Internet connection;

an IP address;

a processor; and

a peripheral device.

49. An apparatus comprising:

a memory; and

a processor configured by said memory to perform the method of claim 1.

50. The method according to claim 1 where said intermediate servers are dedicated servers, and wherein the method is preceded by the step of providing said multiple intermediate servers.

51. The method according to claim 1 where said intermediate servers are integrated with other servers having a specific distinct functionality.

52. The method according to claim 51 where at least one out of said other servers is one out of a web server, a database server, a mail server, a FTP server, a DHCP server and a DNS server.

53. The method according to claim 51 where at least one of said intermediate server share with the other server one out of an enclosure, an Internet connection, an IP address, a processor or a peripheral device.

54. The method according to claim 1 wherein the message is delivered as part of a real-time service.

55. The method according to claim 1 wherein the message includes audio or video information.

56. The method according to claim 55 wherein the message is part of one out of VoIP, video conferencing, IPTV and Internet telephony service.

57. The method according to claim 1 further including the step of generating a random number, and wherein the random number is used as part of the partition of the message or association of the message slices with said intermediate servers.

58. The method according to claim 57, wherein the generating of said random number is based on a physical process.

59. The method according to claim 58, wherein the physical process is one out of thermal noise, shot noise, nuclear decaying radiation, photoelectric effect and quantum phenomenon.

60. The method according to claim 57, wherein the generating of said random number is based on an algorithm for generating pseudo-random numbers.

61. The method according to claim 1, wherein the sender steps or the recipient steps are executed by a dedicated software module.

62. The method according to claim 1, wherein the sender steps or the recipient steps are respectively executed by a software module integrated with the application involved in generating the message to be sent or using the received message.

63. The method according to claim 1, wherein the sender steps and the intermediate server steps are both executed by the same processor.

64. The method according to claim 1, wherein a dedicated device is executing the intermediate server steps.

65. The method according to claim 1, wherein the intermediate server steps are executed by a server having another function.

66. The method according to claim 1 wherein a second message is to be sent, the method further comprising the steps of:

partitioning the second message into a plurality of message slices, each message slice containing one or more of said second message elements;

associating each message slice with an intermediate server; and

sending each message slice together with the IP address of the recipient to the server associated with the message slice.

67. The method according to claim 66 wherein the partitioning of the second message is based on a partitioning scheme distinct from the partitioning of the first message.

68. The method according to claim 66 wherein the association of each of the second message slices with an intermediate server is based on an associating scheme distinct from the associating of the first message slices.

69. The method according to claim 1 wherein the message partition is based on a slicing scheme, and the method is further preceded by the step of receiving and storing the slicing scheme.

70. The method according to claim 69 wherein the slicing scheme is received via the Internet.

71. The method according to claim 70 wherein the slicing scheme is received via the Internet from the recipient or from one of said intermediate servers.

72. The method according to claim 70 wherein the slicing scheme is received via the Internet from the server distinct from said intermediate servers.

73. The method according to claim 69 wherein the slicing scheme is periodically received.

74. The method according to claim 73 wherein the slicing scheme is periodically received based on a date or on TOD.

75. The method according to claim 73 wherein the periods between slicing schemes receptions is random.

76. The method according to claim 1 wherein the association between the message slices and the intermediate servers is based on an associating scheme including an available intermediate servers list, and the method is further preceded with the step of receiving and storing the associating scheme.

77. The method according to claim 76 wherein the associating scheme is received via the Internet.

78. The method according to claim 77 wherein the associating scheme is received via the Internet from the recipient or from one of said intermediate servers.

79. The method according to claim 77 wherein the associating scheme is received via the Internet from the server distinct from said intermediate servers.

80. The method according to claim 76 wherein the associating scheme is periodically received.

81. The method according to claim 80 wherein the associating scheme is periodically received based on a date or on TOD.

82. The method according to claim 80 wherein the periods between slicing schemes receptions is random.

83. The method according to claim 1 wherein the message to be sent is originated at a computer other than the sender, the method further preceded by the step of receiving the message to be sent from said computer.

84. The method according to claim 83 wherein the message is received via a network.

85. The method according to claim 84 wherein the network is a LAN, NGN or an intranet.

86. The method according to claim 85 wherein the sender is integrated or co-located with a router, a NAT-enabled computer or a gateway.

87. The method according to claim 83 wherein the sender is integrated or co-located with a security device.

88. The method according to claim 87 wherein the security device is a firewall.

89. The method according to claim 1 wherein the message slices are sent in IP packets each having an IP source address selected from a list of IP addresses, and wherein the association between the packet including the message slices and the IP addresses is based on an associating scheme, and the method is further preceded by the step of receiving and storing the list of the available IP addresses and the associating scheme.

90. The method according to claim 89 wherein the associating scheme is received via the Internet.

91. The method according to claim 90 wherein the associating scheme is received via the Internet from the recipient or from one of said intermediate servers.

92. The method according to claim 90 wherein the associating scheme is received via the Internet from the server distinct from said intermediate servers.

93. The method according to claim 89 wherein the associating scheme is periodically received.

94. The method according to claim 93 wherein the associating scheme is periodically received based on a date or on TOD.

95. The method according to claim 93 wherein the periods between slicing schemes receptions is random.

96. A method for improving the security of transferring first and second messages that respectively include a succession of first and second message elements, from a sender location to a recipient location over multiple paths in the Internet using a plurality of intermediate servers, wherein the sender location, the recipient location and the servers are each associated with an IP (Internet Protocol) address for being addressable in the Internet, the method comprising:

(a) partitioning the first message into a plurality of first message slices, each first message slice contains at least one of the first message elements;

(b) associating to each of the plurality of first message slices an intermediate server that is selected from the plurality of intermediate servers, according to a first association scheme, so that each intermediate server of the plurality of intermediate servers is being associated with at least one out of the first message slices;

(c) sending each of the first message slices together with the IP address of the recipient location to the intermediate server associated with the respective one of the first message slice;

(d) partitioning the second message into a plurality of second message slices, each second message slice contains at least one of the second message elements;

(e) associating to each of the plurality of second message slices an intermediate server that is selected from the plurality of intermediate servers, according to a second association scheme that is distinct from the first association scheme, so that each intermediate server of the plurality of intermediate servers is being associated with at least one out of the second message slices; and

(f) sending each of the second message slices together with the IP address of the recipient location to the intermediate server associated with the respective one of the second message slice.

97. The method according to claim 96, wherein each of the plurality of intermediate servers executes at least the steps of:

(a) receiving and identifying each of the first or second message slices associated with the intermediate server and the IP address of the recipient location; and

(b) sending the received message slices to the recipient location.

98. The method according to claim 97, further comprising the steps of:

encrypting at least part of the first or second message slices after said respective partitioning step; and

decrypting the at least part of the message slices having at least an encrypted part at the intermediate server prior to said step of sending of the message slice to the recipient location.

99. The method according to claim 98, wherein at least one out of said plurality of intermediate server further executes at least the steps of partitioning the received message slice into a plurality of sub-slices, each sub-slice containing one or more of said message elements, and sending the sub-slices with the IP address of the recipient to another intermediate server or to the recipient.

100. The method according to claim 96, further comprising the step of encrypting a message slice at the intermediate server after the message slice is received at the intermediate server.

101. The method according to claim 100, wherein the recipient steps and the intermediate server steps are both executed by the same processor.

102. The method according to claim 96, wherein at least one out of a plurality of intermediate servers executes at least the steps of:

(a) receiving and identifying each message slice associated with the intermediate server and the IP address of the recipient location; and

(b) sending each received message slice with the IP address of the recipient location to another server.

103. The method according to claim 102, further comprising operating at least one of the intermediate servers to store at least one of:

the associated message slice;

the IP address of the sender location; and

the IP address of the recipient location.

104. An apparatus comprising:

a memory; and

a processor configured by said memory to perform the method of claim 102.

105. The method according to claim 96, further comprising, at the recipient location, at least the steps of:

(a) receiving and identifying the plurality of the first and second message slices; and

(c) reconstructing at least part of the first or second messages as it existed before said respective partitioning step.

106. The method according to claim 105, further comprising the preliminary step of encrypting the first or second message before said respective partitioning step, wherein said respective partitioning step is carried out on the encrypted message, and decrypting the encrypted message at the recipient location after said reconstructing step.

107. The method according to claim 105, further comprising encrypting at least part of the first or second message slices after said partitioning step, and decrypting the encrypted message at the recipient location after said reconstructing step.

108. An apparatus comprising:

a memory; and

a processor configured by said memory to perform the method of claim 105.

109. The method according to claim 96, further comprising a preliminary step of determining the number of first or second message slices into which the respective message is to be partitioned, and wherein said step of partitioning the message is carried out to partition the first or second message into the respective determined number of message slices.

110. The method according to claim 109, wherein the number of message slices to use for the message partitioning is a randomly generated number.

111. The method according to claim 96, further comprising a preliminary step of determining the number of first or second message elements in each of the first or second message slices, and wherein said step of partitioning of the respective first or second message is carried out to partition the message into respective first or second message slices each having the respective determined number of message elements.

112. The method according to claim 111, wherein part of or all of the first or second message slices have the same number of message elements.

113. The method according to claim 111, wherein the number of message elements included in each of the first or second message slices is a randomly generated number.

114. The method according to claim 96, wherein said step of partitioning is carried so that each of the message elements is included in only one message slice.

115. The method according to claim 96, wherein each of the message elements is included in at least two of the first or second message slices.

116. The method according to claim 96, wherein the message elements in at least one of the first or second message slices follow one another in the same order as in the respective message.

117. The method according to claim 96, wherein the message elements in at least one of the first or second message slices follow one another in an order different from the order of the same message elements in the respective message.

118. The method according to claim 117, where the message elements in at least one of the first or second message slices are separated by at least one intervening element in the respective message.

119. The method according to claim 96, wherein said each of the message elements is a bit, a nibble, a byte, or a multi-byte word.

120. The method according to claim 96, wherein said each of the message elements represents a number, a character or a letter.

121. The method according to claim 96, further comprising a preliminary step of padding the first or second message.

122. The method according to claim 96, wherein at least one of the first or second message slices is padded.

123. The method according to claim 96, wherein said partitioning into slices is performed based on the current date or the current TOD (Time-of-Day).

124. The method according to claim 96, wherein information about the partitioning step is sent together with one of the first or second message slices.

125. The method according to claim 96, wherein information about a message slice is sent together with a different slice.

126. The method according to claim 96, further comprising a preliminary step of encrypting the first or second message before said partitioning step, and said partitioning step is performed on the encrypted message.

127. The method according to claim 96, further comprising encrypting at least part of the first or second message slices after the partition step.

128. The method according to claim 96, wherein at least two of said intermediate servers are located at geographically disparate locations.

129. The method according to claim 128, wherein at least two of said intermediate servers are located in different cities, in different states, in different countries, or on different continents.

130. The method according to claim 128, further comprising the preliminary step of providing at least two of the intermediate servers and locating the at least two intermediate servers at geographically disparate locations.

131. The method according to claim 96, further comprising the preliminary step of storing a list composed of a plurality of IP addresses of available intermediate servers.

132. The method according to claim 131, wherein at least one respective message slice is associated to each of the intermediate servers in the list.

133. The method according to claim 131, wherein a respective intermediate server in the list is associated with each message slice.

134. The method according to claim 131, wherein at least one of the intermediate servers in said list is not associated with any message slice.

135. The method according to claim 131, wherein the addresses of the intermediate servers in said list are sequentially associated to a respective one of a succession of first or second message slices.

136. The method according to claim 131, wherein for each message slice, an intermediate server is randomly selected from the list.

137. The method according to claim 131, wherein a geographical location is associated with each intermediate server in the list, and the intermediate servers are selected for association from the list based on their geographical location.

138. The method according to claim 131, wherein, for each message slice, an intermediate server is selected based on a former selection for a first or second message or a first or second message slice.

139. The method according to claim 131, wherein, for each of the first or second message slice, an intermediate server is selected based on the current date, or the current TOD (Time-of-Day).

140. The method according to claim 96, wherein the order of sending the first or second message slices is based on the order of the first message element in each of the respective first or second message slice in the respective first or second message.

141. The method according to claim 96, wherein the order of sending of the first or second message slices is selected at random.

142. The method according to claim 96, wherein said intermediate servers are dedicated servers, and the method further comprising the preliminary step of providing the plurality of intermediate servers.

143. The method according to claim 96, wherein said intermediate servers are integrated with other servers having a specific distinct, different functionality.

144. The method according to claim 143, wherein at least one of the other servers is one of:

a web server;

a database server;

a mail server;

a FTP server; and

a DNS server.

145. The method according to claim 143, wherein at least one of said intermediate servers shares with the other server one of:

an enclosure;

an Internet connection;

an IP address;

a processor; and

a peripheral device.

146. An apparatus comprising:

a memory; and

a processor configured by said memory to perform the method of claim 96.

147. The method according to claim 96 where said intermediate servers are dedicated servers, and wherein the method is preceded by the step of providing said multiple intermediate servers.

148. The method according to claim 96 where said intermediate servers are integrated with other servers having a specific distinct functionality.

149. The method according to claim 148 where at least one out of said other servers is one out of a web server, a database server, a mail server, a FTP server, a DHCP server and a DNS server.

150. The method according to claim 148 where at least one of said intermediate server share with the other server one out of an enclosure, an Internet connection, an IP address, a processor or a peripheral device.

151. The method according to claim 96 wherein the message is delivered as part of a real-time service.

152. The method according to claim 96 wherein the message includes audio or video information.

153. The method according to claim 152 wherein the message is part of one out of VoIP, video conferencing, IPTV and Internet telephony service.

154. The method according to claim 96 further including the step of generating a random number, and wherein the random number is used as part of the partitioning of the first or second message or the association of the first or second message slices with said intermediate servers.

155. The method according to claim 154, wherein the generating of said random number is based on a physical process.

156. The method according to claim 155, wherein the physical process is one out of thermal noise, shot noise, nuclear decaying radiation, photoelectric effect and quantum phenomenon.

157. The method according to claim 154, wherein the generating of said random number is based on an algorithm for generating pseudo-random numbers.

158. The method according to claim 96, wherein the sender steps or the recipient steps are executed by a dedicated software module.

159. The method according to claim 96, wherein the sender steps or the recipient steps are respectively executed by a software module integrated with the application involved in generating the message to be sent or using the received message.

160. The method according to claim 96, wherein the sender steps and the intermediate server steps are both executed by the same processor.

161. The method according to claim 96, wherein a dedicated device is executing the intermediate server steps.

162. The method according to claim 96, wherein the intermediate server steps are executed by a server having another function.

163. The method according to claim 96 wherein the first message partition is based on a slicing scheme, and the method is further preceded by the step of receiving and storing the slicing scheme.

164. The method according to claim 163 wherein the slicing scheme is received via the Internet.

165. The method according to claim 164 wherein the slicing scheme is received via the Internet from the recipient or from one of said intermediate servers.

166. The method according to claim 164 wherein the slicing scheme is received via the Internet from the server distinct from said intermediate servers.

167. The method according to claim 163 wherein the slicing scheme is periodically received.

168. The method according to claim 167 wherein the slicing scheme is periodically received based on a date or on TOD.

169. The method according to claim 167 wherein the periods between slicing schemes receptions is random.

170. The method according to claim 96 wherein the association between the message slices and the intermediate servers is based on an associating scheme including an available intermediate servers list, and the method is further preceded with the step of receiving and storing the associating scheme.

171. The method according to claim 170 wherein the associating scheme is received via the Internet.

172. The method according to claim 171 wherein the associating scheme is received via the Internet from the recipient or from one of said intermediate servers.

173. The method according to claim 171 wherein the associating scheme is received via the Internet from the server distinct from said intermediate servers.

174. The method according to claim 170 wherein the associating scheme is periodically received.

175. The method according to claim 174 wherein the associating scheme is periodically received based on a date or on TOD.

176. The method according to claim 174 wherein the periods between slicing schemes receptions is random.

177. The method according to claim 96 wherein the message to be sent is originated at a computer other than the sender, the method further preceded by the step of receiving the message to be sent from said computer.

178. The method according to claim 177 wherein the message is received via a network.

179. The method according to claim 178 wherein the network is a LAN, NGN or an intranet.

180. The method according to claim 179 wherein the sender is integrated or co-located with a router, a NAT-enabled computer or a gateway.

181. The method according to claim 180 wherein the sender is integrated or co-located with a security device.

182. The method according to claim 181 wherein the security device is a firewall.

183. The method according to claim 96 wherein the first message slices are sent in IP packets each having an IP source address selected from a list of IP addresses, and wherein the association between the packet including the first message slices and the IP addresses is based on the first associating scheme, and the method is further preceded by the step of receiving and storing the list of the available IP addresses and the first associating scheme.

184. The method according to claim 183 wherein the first associating scheme is received via the Internet.

185. The method according to claim 184 wherein the first associating scheme is received via the Internet from the recipient or from one of said intermediate servers.

186. The method according to claim 184 wherein the first associating scheme is received via the Internet from the server distinct from said intermediate servers.

187. The method according to claim 183 wherein the first associating scheme is periodically received.

188. The method according to claim 187 wherein the first associating scheme is periodically received based on a date or on TOD.

189. The method according to claim 187 wherein the periods between slicing schemes receptions is random.