TCP: S2C Ambiguity Simultaneous SYN

This protocol anomaly triggers when it detects SYN packets sent from both ends of a connection at the same time. Because this is not supported by all TCP implementations (although allowed by RFC793), it is recommended to drop these packets.

Short Name
TCP:AUDIT:S2C-SIMUL-SYN
Severity
Major
Recommended
True
Recommended Action
Drop
Category
TCP
Keywords
TCP handshake split
Release Date
04/22/2003
Supported Platforms

srx-branch-12.3

srx-19.3

srx-branch-19.3

vsrx3bsd-19.2

srx-branch-19.4

vsrx-19.4

mx-12.3

mx-19.4

vmx-19.4

mx-19.3

vsrx3bsd-19.4

srx-19.4

vsrx-12.3

vmx-19.3

vsrx-19.2

srx-12.3

Sigpack Version
3324
False Positive
Unknown

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