Article View: comp.os.linux.networking
Article #397Re: IPTables vs. DNS (or : iptables doesn't change sourceport when MASQ'ing)
From: Jan Pieter
Date: Sat, 04 Jan 2003 14:59
Date: Sat, 04 Jan 2003 14:59
14 lines
1980 bytes
1980 bytes
Koen Van de Velde wrote: > I thought it would give each outgoing packet a new unique source-port > (let's say: starting from 61000). When the packets come back, it can > check this port, look it up in it's NAT-table, and forward the packet > to the original requester. As far as I know, this is how ipchains > worked. > Now it seems that iptables is doing it different, Or I did something > wrong with my configuration, Or I'm using a buggy version of iptables. Both ipchains and iptables only change the address, not ports - unless you specifically configure them to do so. Jan Pieter.
Technical Details
Message-ID:
<3E16F6DC.4F127C87@athlon.jp.dhs.org>Path:
arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!skynet.be!skynet.be!transit.news.xs4all.nl!newsfeed.xs4all.nl!xs4all!not-for-mailReferences:
<3e15b63e.2079245577@News.CIS.DFN.DE> <kceb1vkrt1c2c1hl5gmnadtsjtlq1mlmqu@4ax.com> <3e15c063.2081842881@News.CIS.DFN.DE>Show Full Headers
Complete Article Headers
X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 100a19,1167933813471c51 X-Google-Attributes: gid100a19,public X-Google-Thread: 102510,1167933813471c51 X-Google-Attributes: gid102510,public X-Google-Thread: 10669a,1167933813471c51 X-Google-Attributes: gid10669a,public X-Google-ArrivalTime: 2003-01-04 08:01:36 PST Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!skynet.be!skynet.be!transit.news.xs4all.nl!newsfeed.xs4all.nl!xs4all!not-for-mail Message-ID: <3E16F6DC.4F127C87@athlon.jp.dhs.org> Date: Sat, 04 Jan 2003 15:59:40 +0100 From: Jan Pieter <jp@athlon.jp.dhs.org> Organization: Badly Configured Clients, Inc. X-Mailer: Mozilla 4.77 [en] (X11; U; Linux 2.4.20 i686) X-Accept-Language: en MIME-Version: 1.0 Newsgroups: comp.os.linux.networking,nl.comp.os.linux.netwerken,be.comp.os.linux Subject: Re: IPTables vs. DNS (or : iptables doesn't change sourceport when MASQ'ing) References: <3e15b63e.2079245577@News.CIS.DFN.DE> <kceb1vkrt1c2c1hl5gmnadtsjtlq1mlmqu@4ax.com> <3e15c063.2081842881@News.CIS.DFN.DE> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 14 NNTP-Posting-Date: 04 Jan 2003 16:59:41 CET NNTP-Posting-Host: 213.84.189.153 X-Trace: 1041695981 news.xs4all.nl 49117 213.84.189.153:32786 X-Complaints-To: abuse@xs4all.nl