bypass-keyword.rst

Bypass Keyword

Suricata has a bypass keyword that can be used in signatures to exclude traffic from further evaluation.

The bypass keyword is useful in cases where there is a large flow expected (e.g. Netflix, Spotify, YouTube).

The bypass keyword is considered a post-match keyword.

bypass

Bypass a flow on matching http traffic.

Example:

alert http any any -> any any (content:"suricata.io"; \
    http_host; bypass; sid:10001; rev:1;)