[Firehol-support] FIREHOL_DROP_ORPHAN_TCP_ACK_FIN

Daniel Goering g_daniel at gmx.net
Fri Nov 30 23:18:54 GMT 2007


Hi,

I use FireHOL 1.250

recently I added the line

	FIREHOL_DROP_ORPHAN_TCP_ACK_FIN=1

to my config to reduce the log output.The flag causes a lot of rule to
be generated like the following one

	DROP       tcp  --  *      *       0.0.0.0/0
		0.0.0.0/0           state NEW tcp flags:0x3F/0x11

but these rules don't seem to work. All of them have a package count of
0 and I still see a lot of output in my logfiles like

	PASS-unknown:IN=eth0 OUT=ppp0 SRC=xxx.xxx.xxx.xxx
		DST=yyy.yyy.yyy.yyy LEN=40 TOS=0x00 PREC=0x00 TTL=63
		ID=45340 DF PROTO=TCP SPT=XXX DPT=YYY WINDOW=16296
		RES=0x00 ACK FIN URGP=0

Is there something wrong with my configuration or with the way FireHOL
checks for ACK FIN?

Cheers
	Daniel

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 252 bytes
Desc: OpenPGP digital signature
URL: <http://lists.firehol.org/pipermail/firehol-support/attachments/20071201/4c91d403/attachment.sig>


More information about the Firehol-support mailing list