Re: can't ping local 'net, even with no firewall

[Jörgen Johansson <juggej@telia.com>]

On Sunday 22 July 2001 20:22, Matthew Garman wrote:
> I have an internal LAN with two computers.  Even with no firewall, I
> can't get the two computers to ping each other.  For example, do the
> following to flush all iptables:
>
> 	iptables -F
> 	iptables -t filter -F INPUT
> 	iptables -t filter -F OUTPUT
> 	iptables -t filter -F FORWARD
> 	iptables -t nat -F
> 	iptables -t nat -F PREROUTING
> 	iptables -t nat -F POSTROUTING
> 	iptables -t nat -F OUTPUT
> 	iptables -t mangle -F
> 	iptables -t mangle -F PREROUTING
> 	iptables -t mangle -F OUTPUT
>
> Now I set all default policies to ACCEPT:
>
> 	iptables -P INPUT ACCEPT
> 	iptables -P OUTPUT ACCEPT
> 	iptables -P FORWARD ACCEPT
> 	iptables -t nat -P PREROUTING ACCEPT
> 	iptables -t nat -P POSTROUTING ACCEPT
> 	iptables -t nat -P OUTPUT ACCEPT
> 	iptables -t mangle -P OUTPUT ACCEPT
> 	iptables -t mangle -P PREROUTING ACCEPT
>
> And still the two computers can't ping each other.  When I try to
> ping, I watch the lights on my switch: the lights for both computers
> are flashing, indicating link activity, but still ping times out.
>
> On my computer, which has the Internet connection, I can ping any
> host out on the internet.
>
> Any thoughts?
>
> Thanks,
> Matt

Matt
do you ping with host names or ip adress ?
how about default routes gateway netmask ?
/regards Jörgen