https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=197484
Bug ID: 197484
Summary: pf 3whs ACK handling
Product: Base System
Version: 10.1-STABLE
Hardware: Any
OS: Any
Status: New
Severity: Affects Many People
Priority: ---
Component: kern
Assignee: freebsd-bugs@FreeBSD.org
Reporter: kri...@cflinux.hu
Created attachment 152799
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=152799&action=edit
the fix
pf synproxy will do the 3WHS on behalf of the target machine, and once
the 3WHS is completed, establish the backend connection. The trigger
for "3WHS completed" is the reception of the first ACK. However, we
should not proceed if that ACK also has RST or FIN set.
reference:
http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/net/pf.c?rev=1.901&content-type=text/x-cvsweb-markup
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