session
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... evolved in both sophistication and access to the point that they can
send control traffic to a protocol session, and that this traffic
appears to be valid ...
...
When a multi-hop protocol session is required, we set the expected
TTL value to be 255-(configured-range ...
... GTSM is a simple procedure that protects single hop protocol
sessions, except in those cases in which the peer has been
compromised.
...
... method is less effective for multi-hop protocol
sessions, it does close the window on several forms of attack.
However, in the multi-hop ...
... Heffernan, A., "Protection of BGP Sessions via the TCP MD5 Signature Option", RFC 2385prop, August 1998. ...