TCP Flags set bug?
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I am about to set SYN packet high priority,detail is in TCP Flags, SYN set, ACK cleared, others don't care.
After apply settings, I found the rules added by webui is,
pass in on rl0 proto tcp all flags S/FSRPAU keep state tag qLANacks tagged unshaped
pass out on vr0 proto tcp all flags S/FSRPAU keep state tag qWANacks tagged qLANacksS/FSRPAU, why not S/SA ? Is it a bug?
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I am about to set SYN packet high priority,detail is in TCP Flags, SYN set, ACK cleared, others don't care.
After apply settings, I found the rules added by webui is,
pass in on rl0 proto tcp all flags S/FSRPAU keep state tag qLANacks tagged unshaped
pass out on vr0 proto tcp all flags S/FSRPAU keep state tag qWANacks tagged qLANacksS/FSRPAU, why not S/SA ? Is it a bug?
flags <a>/ | / This rule only applies to TCP packets that have the flags</a> ****<a>set
out of set **. Flags not specified in **are ignored. The flags
are: (F)IN, (S)YN, (R)ST, (P)USH, (A)CK, (U)RG, (E)CE, and C(W)R.flags S/S Flag SYN is set. The other flags are ignored.
flags S/SA Out of SYN and ACK, exactly SYN may be set. SYN,
SYN+PSH and SYN+RST match, but SYN+ACK, ACK and ACK+RST
do not. This is more restrictive than the previous ex-
ample.flags /SFRA
If the first set is not specified, it defaults to none.
All of SYN, FIN, RST and ACK must be unset.</a><a>–Bill</a>