Ultimately, I am trying to mark packets for a tc filter. Should I not be using the iptables set-mark to do that? Casey ----- "Matt Zagrabelny" <mzagrabe@xxxxxxxxx> wrote: > 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 - 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
