RFC Errata


Errata Search

 
Source of RFC  
Summary Table Full Records

RFC 4253, "The Secure Shell (SSH) Transport Layer Protocol", January 2006

Note: This RFC has been updated by RFC 6668, RFC 8268, RFC 8308, RFC 8332, RFC 8709, RFC 8758, RFC 9142

Source of RFC: secsh (sec)
See Also: RFC 4253 w/ inline errata

Errata ID: 4721
Status: Verified
Type: Editorial
Publication Format(s) : TEXT

Reported By: Oleg Andriyanov
Date Reported: 2016-06-27
Verifier Name: Paul Wouters
Date Verified: 2023-07-28

Section 5.3 says:

   o  The minimum size of a TCP/IP header is 32 bytes.  Thus, the
      increase is actually from 33 to 51 bytes (roughly).

   o  The minimum size of the data field of an Ethernet packet is 46
      bytes [RFC0894].  Thus, the increase is no more than 5 bytes.
      When Ethernet headers are considered, the increase is less than 10
      percent.

It should say:

   o  The minimum size of a TCP/IP header is 32 bytes.  Thus, the
      increase is actually from 33 to 60 bytes (roughly).

   o  The minimum size of the data field of an Ethernet packet is 46
      bytes [RFC0894].  Thus, the increase is no more than 14 bytes.
      When Ethernet headers are considered, the increase is less than 25
      percent.

Notes:

As the minimum size of SSH message is 28, the minimum size of the TCP segment containing SSH message must be 32 + 28 == 60 bytes (as opposed to 32 + 1 in case of transmission of plain text over TCP).

Report New Errata



Advanced Search