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Systems and methods for adjusting the maximum transmission unit for encrypted communications

  • US 7,609,721 B2
  • Filed: 07/22/2005
  • Issued: 10/27/2009
  • Est. Priority Date: 07/23/2004
  • Status: Active Grant
First Claim
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1. A method for adjusting the maximum transmission unit of a secure network communication to reduce network fragmentation, the method comprising the steps of:

  • (a) establishing a session between a first computing device and a second computing device, the first computing device having a first network stack;

    (b) detecting, by the first computing device, a plurality of network packets of thesession having encrypted payloads, at least the first network packet of the plurality of network packets of the session having a different size of encryption overhead than the one of a second network packet of the plurality of network packets of the session;

    (c) determining, by the first computing device, in response to the detecting, a setting for a maximum transmission unit parameter of the first network stack to reduce a maximum transmission unit size by at least a size of a largest encryption overhead of the plurality of network packets of the session; and

    (d) altering the maximum transmission unit parameter of the first network stack to the determined setting.

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