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-si...)
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.
-Mike