From mboxrd@z Thu Jan 1 00:00:00 1970 From: "U. George" Subject: Re: multiport needs `-p tcp', `-p udp' - Why? Date: Sat, 27 Feb 2010 11:17:05 -0500 Message-ID: <4B894581.10700@gatworks.com> References: <4B893433.7020401@gatworks.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: netfilter-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: Cc: netfilter@vger.kernel.org U'll have to let me know why "-p udp" is needed when the chain can only have udp packets, and therefor can only process udp packets. I dont want to test over (( and over ) and over ) again when I know that the packet is already KNOWN to be from eth1 and of protocol UDP. adding "-p UDP" to multiport does make iptables happy, but appears to be a useless test. On 02/27/2010 10:06 AM, ratheesh k wrote: > Port is in Layer 4 of protocol stack . > > > On Sat, Feb 27, 2010 at 8:33 PM, U. George wrote: >> In order to get to the chain, the protocol, as well as the interface must >> match. PRE_UDP if already filtered for "-p udp" . So why does multiport >> require another check for -p udp? Does it really need to have that option in >> order for it to work? >> >>> + /sbin/iptables -t filter -N PRE_UDP >>> + /sbin/iptables -t filter -A INPUT -i eth1 -p udp -j PRE_UDP >>> + /sbin/iptables -t filter -A PRE_UDP -m multiport --dport >>> 137,138,139,512,514,515,1433,1434 -j DROP >>> iptables v1.4.5: multiport needs `-p tcp', `-p udp', `-p udplite', `-p >>> sctp' or `-p dccp' >>> Try `iptables -h' or 'iptables --help' for more information. >> >> >> >> -- >> To unsubscribe from this list: send the line "unsubscribe netfilter" in >> the body of a message to majordomo@vger.kernel.org >> 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@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > >