On Sat, Jan 31, 2009 at 7:59 PM, seth vidal <skvidal@xxxxxxxxxxxxxxxxx> wrote: > On Sat, 2009-01-31 at 21:30 -0600, Mike McGrath wrote: >> On Sat, 31 Jan 2009, Frank Chiulli wrote: >> >> > So I've implemented the CSI (Security Policy) as previously posted by Mike >> > (http://infrastructure.fedoraproject.org/csi/security-policy/en-US/html-singel/) >> > >> > Now I'm seeing the following messages in /var/log/messages: >> > Jan 31 19:09:21 localhost kernel: FW-REJECT IN=eth0 OUT= >> > MAC=ff:ff:ff:ff:ff:ff:00:16:01:41:10:5b:08:00 SRC=192.168.2.248 >> > DST=192.168.2.255 LEN=78 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP >> > SPT=137 DPT=137 LEN=58 >> > >> > Jan 31 19:09:21 localhost kernel: FW-REJECT IN=eth0 OUT= >> > MAC=ff:ff:ff:ff:ff:ff:00:0e:3b:02:0e:b7:08:00 SRC=192.168.2.250 >> > DST=192.168.2.255 LEN=229 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP >> > SPT=138 DPT=138 LEN=209 >> > >> > >> > 192.168.2.248 is a NAS device >> > 192.168.2.250 is a Hawking print server >> > >> > I'm not an iptables expert. Usually I just leave it alone. Can >> > someone help me write one or more rules to eliminate the messages? >> > >> >> I suspect that before you were blocking these messages but didn't notice. >> You'll see the "DPT=137" and "DPT=138". Those are both ports that the >> various IP's are trying to hit on your machine. If you check out those >> ports in /etc/services >> >> In this case those devices seem to be using netbios. If you want to get >> rid of them you can just remove the: >> >> -A INPUT -j LOG --log-prefix "FW-REJECT " >> >> Or setup netbios, or block the ports explicitly or allow it and let them >> drop naturally. > > Those are windows/samba/cifs ports. if you've got samba running and/or a > windows (or now-adays even a mac) running on the same network you'll > probably find your culprit. > > -sv > > > I'm not running samba. If I put the following rule before the LOG rule, will the packets be dropped and the messages stopped? -A INPUT -p udp -s 192.168.0.0/24 -d 192.168.0.0/24 -m multiport --ports 137,138 -j DROP Frank _______________________________________________ Fedora-infrastructure-list mailing list Fedora-infrastructure-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-infrastructure-list
