From: Marc SCHAEFER <schaefer@alphanet.ch>
To: netfilter@vger.kernel.org
Subject: [SOLVED] Generic map, also with L4 protocol
Date: Fri, 28 Feb 2025 15:42:36 +0100 [thread overview]
Message-ID: <Z8HLXFcsG26MWotY@alphanet.ch> (raw)
In-Reply-To: <Z5fuieMugg4fcNKR@alphanet.ch>
Hello,
The goal was to add the L4 protocol in a DNAT map which maps
an external IP and port to an internal (private) IP and
port, for external services mapping to internal services.
Thanks to Pablo Neira Ayuso:
> map multihoming_ext {
> type ipv4_addr . inet_service : ipv4_addr . inet_service
type ipv4_addr . inet_proto . inet_service : ipv4_addr . inet_service
> elements = {
> 46.140.72.218 . 8080 : 192.168.202.10 . 80,
> 193.72.186.130 . 8080 : 192.168.202.10 . 80
> }
> }
+ 46.140.72.218 . tcp . 8080 : 192.168.202.10 . 80,
+ 193.72.186.130 . tcp . 8080 : 192.168.202.10 . 80,
+ 46.140.72.218 . udp . 5353 : 192.168.202.10 . 53
> dnat ip addr . port to ip daddr . tcp dport map @multihoming_ext
# @th: transport header; destination port
dnat ip addr . port to ip daddr . meta l4proto . @th,16,16 map @multihoming_ext
I could test it and it works.
prev parent reply other threads:[~2025-02-28 15:09 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-27 20:37 Generic map, also with L4 protocol Marc SCHAEFER
2025-02-28 14:42 ` Marc SCHAEFER [this message]
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