Signature Detail
Short Name |
TCP:C2S:AMBIG:SYN-RTNS--BADSACK |
|---|---|
Severity |
Info |
Recommended |
No |
Recommended Action |
Drop Packet |
Category |
TCP |
Release Date |
2003/08/27 |
Update Number |
1213 |
Supported Platforms |
idp-4.0+, isg-3.0+, j-series-9.5+, mx-9.4+, srx-9.2+, srx-branch-9.4+, vsrx-12.1+ |
TCP: C2S Ambiguity Mismatching SACK Opt in SYN Retrans
This protocol anomaly triggers when it detects a TCP SYN retransmission where the SACK option differs from the one specified with the original SYN. Because it is unknown if the server received the first SYN, IDP cannot determine if SACK is permitted.
Extended Description
None
References