Network Problems

[jludwig]

On Saturday 16 April 2005 08:59 am, edukes at alltel.net wrote:
> Hello,
>
> Still haven't figured this one out since 4-14.......
>
> Changed out nics, cables, switch.
>
> Server is now connecting to internet and all internet services are working
> as far as I can tell.
>
> Local machines on the internal network cannot connect.  Strange thing is
> they can ping internal and external IP addresses.  Samba services are
> working.
>
> Network Configuration tool reports status of the nics 'OK'.
>
> It has been a few years since I setup this network and have not needed to
> make any changes.  I am on DSL.  eth0 is not active at boot, eth1 is active
> at boot.  Is this correct?
>
> Network Configuration tool shows eth0 'Inactive'.  Shouldn't it be active
> after DSL and ppp0 start?
>
> Any help is greatly appreciated!!!!!!!!!!!!!
1) Try on xterm  > cat  /proc/sys/net/ipv4/ip_forward <
should return 1

2) Do you have a firewall and is IP forwarding there and properly set up.

3) Is your default route properly set?
> route -n 

Should return something like; 
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.14.0    0.0.0.0         255.255.255.0   U     0      0        0 eth1
192.168.12.0    0.0.0.0         255.255.255.0   U     0      0        0 eth0
169.254.0.0     0.0.0.0         255.255.0.0     U     0      0        0 eth1
0.0.0.0         192.168.12.1    0.0.0.0         UG    0      0        0 eth0

 Where eth0 and 192.168.12.1 is my server 2 ( I have 3 layers of firewall ).

-- 
John H Ludwig