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Title: IP masquerading

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IP masquerading

Applicable to
S.u.S.E. version: >= 4.2
Kernel version: >= 2.0.0

Symptom:

You want to use IP masquerading, and you think that you have your kernel correspondingly configured, but the file /proc/net/ip_masquerade (which you need for masquerading) does not exist.

Cause:

The support for IP masquerading was not completely activated during the kernel configuration.

Solution:

You require (at least) the following kernel configuration options:

*
* Code maturity level options
*
Prompt for development and/or incomplete code/drivers 
(CONFIG_EXPERIMENTAL) [Y/n
/?] y
...
*
* General setup
*
Networking support (CONFIG_NET) [Y/n/?] y
...
*
* Networking options
*
Network firewalls (CONFIG_FIREWALL) [N/y/?] y
Network aliasing (CONFIG_NET_ALIAS) [N/y/?] y
TCP/IP networking (CONFIG_INET) [Y/n/?] y
IP: forwarding/gatewaying (CONFIG_IP_FORWARD) [N/y/?] y
...
IP: firewalling (CONFIG_IP_FIREWALL) [N/y/?] (NEW) y
IP: firewall packet logging (CONFIG_IP_FIREWALL_VERBOSE) [N/y/?] (NEW) y
IP: masquerading (EXPERIMENTAL) (CONFIG_IP_MASQUERADE) [N/y/?] (NEW) y
*
* Protocol-specific masquerading support will be built as modules.
*
...
IP: accounting (CONFIG_IP_ACCT) [N/y/?] y
IP: optimize as router not host (CONFIG_IP_ROUTER) [N/y/?] (NEW) y
...
IP: aliasing support (CONFIG_IP_ALIAS) [N/y/m/?] (NEW) y
You should absolutely read through in the following sources the procedure for IP masquerading use:

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Keywords: NET, IP, TCP/IP, MASQUERADE, FIREWALL

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Feedback welcome: Send Mail to maddin@suse.de (Please give the following subject: SDB-maddin_ipmask)

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SDB-maddin_ipmask, Copyright SuSE GmbH, Nuremberg, Germany - Version:
SuSE GmbH - Last generated: 07. Oct 1999 17:01:49 by maddin with sdb_gen 1.00.0