On Fri, 2008-02-22 at 12:53 -0800, Casey Scott wrote: > Good suggestion. Tried just tried that. Traffic gets logged, but > the mark is not set. E.g. (from dump) > > Feb 22 12:50:52 tomcat kernel: IN= OUT=eth0 SRC=66.93.87.2 > DST=192.168.1.7 LEN=1500 TOS=0x00 PREC=0x20 TTL=54 ID=4397 > DF PROTO=TCP SPT=80 DPT=4322 WINDOW=17520 RES=0x00 ACK URGP=0 > > Feb 22 12:50:52 tomcat kernel: IN=eth0 OUT=eth1 SRC=192.168.1.7 > DST=66.93.87.2 LEN=40 TOS=0x00 PREC=0x00 TTL=127 ID=18031 DF > PROTO=TCP SPT=4322 DPT=80 WINDOW=64240 RES=0x00 ACK URGP=0 > > Feb 22 12:50:52 tomcat kernel: IN= OUT=eth0 SRC=66.93.87.2 > DST=192.168.1.7 LEN=1500 TOS=0x00 PREC=0x20 TTL=54 ID=4398 > DF PROTO=TCP SPT=80 DPT=4322 WINDOW=17520 RES=0x00 ACK URGP=0 > > > Notice all the TOS is still 0x00. I am setting marks to 3 or 4 > depending on traffic type. AFAIK, setting TOS is not the same as marking. [goes to check] The man page confirms that. > Casey > > ----- "Rob Sterenborg" <rob@xxxxxxxxxxxxxxx> wrote: > > > > How can I detemine whether or not a iptables set-mark operation > > > is working? iptables -t mangle -nvL shows packets matching the > > > rules with the set-mark. However, with a tcpdump -vvv -i > > > <interface> > > > I can not see the mark. I am looking at the tos field, and I > > > don't see a tos field matching the marks I am trying to set. > > > > Did you try to match the mark in a subsequent rule and LOG the packet > > when the rule hits? > > See also man iptables: > > > > mark > > This module matches the netfilter mark field associated with a packet > > (which can be set using the MARK target below). > > --mark value[/mask] Matches packets with the given unsigned mark value > > (if a mask is specified, this is logically ANDed with the mask before > > the comparison). > > > > > > Grts, > > Rob > > > > > > - > > To unsubscribe from this list: send the line "unsubscribe netfilter" > > in > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > More majordomo info at http://vger.kernel.org/majordomo-info.html > - > To unsubscribe from this list: send the line "unsubscribe netfilter" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Matt Zagrabelny - mzagrabe@xxxxxxxxx - (218) 726 8844 University of Minnesota Duluth Information Technology Systems & Services PGP key 1024D/84E22DA2 2005-11-07 Fingerprint: 78F9 18B3 EF58 56F5 FC85 C5CA 53E7 887F 84E2 2DA2 He is not a fool who gives up what he cannot keep to gain what he cannot lose. -Jim Elliot
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