From: Hinko Kocevar <hinko.kocevar@cetrtapot.si>
To: Mart Frauenlob <mart.frauenlob@chello.at>
Cc: netfilter@vger.kernel.org
Subject: Re: icmp forward
Date: Fri, 30 Jan 2009 12:36:06 +0100 [thread overview]
Message-ID: <4982E626.80800@cetrtapot.si> (raw)
In-Reply-To: <4982C662.7030807@chello.at>
Mart Frauenlob wrote:
> Hinko Kocevar wrote:
>> Our customers want to be able to ping the mobile device behind the
>> linux firewall
>> and IMHO it is not possible for ICMP packets to be forwarded since it
>> is a protocol
>> by itself (not a TCP/UDP style service).
>>
>>
>
> *clearing my throat*
> TCP and UDP are protocols no services! many services use TCP/UDP protocol!
> TCP and UDP are very different, UDP is a connectionless protocol, in
> opposite to TCP.
>
> So ICMP is more like UDP, than like TCP.
Right.
>> Is it possible to 'port forward' ICMP requests?
>>
>
> First try, then cry ;-p
>
> If u have an unused ip addr. on your gw, you could use that one to nat
> the icmp, so your gateway still is reachable with icmp.
>
Hmm that seems like a viable solution - totally forgot about the network
interface aliasing 8).
Thanks!
--
Hinko Koèevar, OSS developer
ÈETRTA POT, d.o.o.
Planina 3, 4000 Kranj, SI EU
tel ++386 (0) 4 280 66 03
e-mail hinko.kocevar@cetrtapot.si
http www.cetrtapot.si
prev parent reply other threads:[~2009-01-30 11:36 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-30 8:18 icmp forward Hinko Kocevar
2009-01-30 8:33 ` Michele Petrazzo - Unipex srl
2009-01-30 8:53 ` Payam Chychi
2009-01-30 9:19 ` Hinko Kocevar
2009-01-30 8:49 ` Christoph Paasch
2009-01-30 9:12 ` Hinko Kocevar
2009-01-30 10:53 ` Pascal Hambourg
2009-01-30 11:24 ` Hinko Kocevar
2009-01-30 11:35 ` Hinko Kocevar
2009-01-30 11:42 ` Pascal Hambourg
2009-01-30 11:36 ` Mart Frauenlob
2009-01-30 9:20 ` Mart Frauenlob
2009-01-30 11:36 ` Hinko Kocevar [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4982E626.80800@cetrtapot.si \
--to=hinko.kocevar@cetrtapot.si \
--cc=mart.frauenlob@chello.at \
--cc=netfilter@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox