[Sheflug] Re: Routing Problem

[Richard <nospam [at] sheflug.co.uk>]

Stephen

Did what you asked me to.....

"Stephen J. Turnbull" wrote:
 
> On the gateway box:
 
> # first try
> echo 1 > /proc/sys/net/ipv4/ip_forward # the usual culprit
> # now test, no restart necessary

After doing this I can ping 192.168.1.0 from the notebook.
Then I connected and pinged 194.247.47.47 from the notebook and the
output of the terminal window says...

"ping: sendto: network is unreachable"

lynx tells me that it is unable to connect to a host.
 
> # second try
> echo "proxyarp" >> /etc/ppp/options    # location may vary.  not likely,
                                        # but haul 'im in for
questioning
> # now restart the ppp link and test

Same again
 
> # "run in circles, scream and shout" mode
> # disconnect any security-sensitive hosts from the gateway
> ipchains -F forward
> ipchains -P forward ACCEPT
> # ping the ISP gateway and then reboot the local gateway, you're wide-open

Can ping 192.168.1.0 from the notebook through the hub to the gateway
but not 192.168.1.1.  Can't ping 192.168.1.3 from the gateway to the
notebook.

> # if ping works here, your packet filter is hosed and we need to
> #   see the output of ipchains -L on the gateway

Chain input (policy ACCEPT)
Chain forward (policy ACCEPT)
Chain output (policy ACCEPT)


Happy new year :)


-- 
Richard

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