WAP11 host behind Netfilter Router

["Ryan Beisner" <ryan@mail.prattusa.com>]

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Hi All!


I have a Linksys WAP11 behind a high speed connection.

Currently doing simple NAT with:

    iptables -t nat -A POSTROUTING -o $extdev -j MASQUERADE
        (other rules to accept certain protocols for ssh, webmin, etc)
        and then:
    iptables -A INPUT -i $extdev -m state --state NEW,INVALID -j DROP
    iptables -A FORWARD -i $extdev -m state --state NEW,INVALID -j DROP
        as a simple block to unwanted traffic on an already protected ext. network
 
Here's the scenario:

    INT (eth0) IP Range ( 192.168.168.1 class C )
    EXT (eth1) IP Range also private ( 10.20.0.3 class B )
    EXT (eth1:1) Virtual IP is 10.20.0.4

I want to map everything from Virt IP (Eth1:1) 10.20.0.4 (all ports) to internal 192.168.168.178 (the Linksys WAP 11).  FYI this is for remote management of my access point.
 
Where in the world do I start? All help is appreciated in advance.
 
Here was my first attempt, which did not work.  I explicitly allow all traffic in/out/fwd for 10.20.0.4 to make sure I wasn't kicking myself here.  Still no go.  Suggestions?
 
    ""iptables -A PREROUTING -t nat -d 10.20.0.4 -j DNAT --to 192.168.168.178""


-Ryan Beisner

ryanb -at-nosp@m- thedataarc () com



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