From: Pascal Hambourg <pascal.mail@plouf.fr.eu.org>
To: netfilter@lists.netfilter.org
Subject: Re: Wrong ips
Date: Thu, 01 Feb 2007 17:25:58 +0100 [thread overview]
Message-ID: <45C21496.7000306@plouf.fr.eu.org> (raw)
In-Reply-To: <200702010851.14795.alp@rosten.elektra.ru>
Hello,
Alexander Pyhalov a écrit :
> I'm trying to add some rules, but they don't work, when contain port numbers:
>
> When I'm adding the following rule
>
> # Access to HTTP server
> iptables -A INPUT -p tcp -m tcp --dport 80 -j ACCEPT
> # Access to SSH is allowed to all
> iptables -A INPUT -p tcp -m --dport 22 -j ACCEPT
> # Access to Tomcat
> iptables -A INPUT -s <ip1>ACCEPT
> iptables -A INPUT -s <ip2> -j ACCEPT
> # Access to SMB is allowed to all
> iptables -A INPUT -p tcp -m --dport 139 -j ACCEPT
> iptables -A INPUT -p tcp -m --dport 445 -j ACCEPT
> iptables -P INPUT REJECT
There are typoes. Can you copy the output of iptables-save ?
> I can't ssh to server.
"Server" = the host on which the above rules are created ?
> iptables -A INPUT -p tcp -m tcp -s <my ip> -j LOG
>
> and got something strange in log:
> eb 1 08:15:12 athena kernel: IN=eth0 OUT= MAC=00:0d:60:eb:a7:7c:00:02:b3:d6:be:9d:08:00 SRC=58.48.57.58 DST=255.255.0.13 LEN=15942 TOS=0x14
> PREC=0x20 TTL=49 ID=25954 MF FRAG:32 PROTO=32
> Feb 1 08:15:12 athena kernel: IN=eth0 OUT= MAC=00:0d:60:eb:a7:7c:00:02:b3:d6:be:9d:08:00 SRC=58.48.57.58 DST=47.98.0.13 LEN=15942 TOS=0x14 P
> REC=0x20 TTL=49 ID=25954 MF FRAG:32 PROTO=32
> Feb 1 08:15:12 athena kernel: IN=eth0 OUT= MAC=00:0d:60:eb:a7:7c:00:02:b3:d6:be:9d:08:00 SRC=0.0.8.0 DST=0.0.0.13 LEN=0 TOS=0x00 PREC=0x00 T
> TL=0 ID=0 PROTO=0
> Feb 1 08:15:12 athena kernel: IN=eth0 OUT= MAC=00:0d:60:eb:a7:7c:00:02:b3:d6:be:9d:08:00 SRC=58.48.57.58 DST=0.0.0.13 LEN=15942 TOS=0x14 PRE
> C=0x20 TTL=49 ID=25954 MF FRAG:32 PROTO=32
> Feb 1 08:15:12 athena kernel: IN=eth0 OUT= MAC=00:0d:60:eb:a7:7c:00:02:b3:d6:be:9d:08:00 SRC=58.49.48.58 DST=255.255.0.13 LEN=15942 TOS=0x14
> PREC=0x20 TTL=49 ID=25954 MF FRAG:32 PROTO=32
> Feb 1 08:15:13 athena kernel: IN=eth0 OUT= MAC=00:0d:60:eb:a7:7c:00:02:b3:d6:be:9d:08:00 SRC=58.48.57.58 DST=255.255.0.13 LEN=15942 TOS=0x14
> PREC=0x20 TTL=49 ID=25954 MF FRAG:32 PROTO=32
> Feb 1 08:15:13 athena kernel: IN=eth0 OUT= MAC=00:0d:60:eb:a7:7c:00:02:b3:d6:be:9d:08:00 SRC=0.0.0.0 DST=0.0.0.13 LEN=19526 TOS=0x04 PREC=0x
> 40 TTL=0 ID=257 FRAG:256 PROTO=0
>
> But these ip addresses are not my ip addresses.
Invalid IP address (DST=0.0.0.13), huge packet length (LEN=15942),
unknown protocol number (PROTO=32)... It looks like the LOG output is
completely messed up. Can you compare this to a network packet capture
using tcpdump/ethereal/wireshark/other ?
prev parent reply other threads:[~2007-02-01 16:25 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-01 5:51 Wrong ips Alexander Pyhalov
2007-02-01 11:37 ` Georgi Alexandrov
2007-02-01 11:48 ` Alexander Pyhalov
2007-02-01 16:25 ` Pascal Hambourg [this message]
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