dialin server not routing/forwarding???

[Edward]

Milen Dimitrov wrote:
> 
> 
> Hi,
> I just setup a dialin server on RedHat 9.
> Dial in server is a member of LAN with common gateway 192.168.1.1.
> I can browse internet from dial-in server and I can ping any other PC in 
> the LAN.
> 
>  From a windows PC i can dial in and connect to the server but I cannot 
> browse Internet.
> When connected to the dial-in server my windows PC has the following 
> ipsettings and I cannot ping
> any other PC in the LAN except dial in server (192.168.1.10) I'm 
> connected to:
> c:\>ipconfig /all
> PPP adapter test2PPP:
>        Connection-specific DNS Suffix  . :
>        Description . . . . . . . . . . . : WAN (PPP/SLIP) Interface
>        Physical Address. . . . . . . . . : 00-53-45-00-00-00
>        DHCP Enabled. . . . . . . . . . . : No
>        IP Address. . . . . . . . . . . . : 192.168.1.171
>        Subnet Mask . . . . . . . . . . . : 255.255.255.255
>        Default Gateway . . . . . . . . . : 192.168.1.171
>        DNS Servers . . . . . . . . . . . : 192.168.1.2
>                                                      192.168.1.3
> 
> As you see the IP and the gateway for my windows PC are the same - 
> 192.168.1.171. Is this correct?
> 
> My guess is that the linux Dial-in server doesn't route/forward packets 
> from PPP  to the rest of the LAN?
> How I can prove if it's true or not?
> Which config files/log files to be check out?
> Which tools I can use to debug it?
> 
> Thank you for the help in advance!
> Milen
> ==================================
> Please see some of config files bellow:
> 1. /etc/sysctl.conf
> contains the line:
> --------------------------
> net.ipv4.ip_forward = 1
> --------------------------
> so cat /proc/sys/net/ip4fw/ip_forward
> shows "1"
> 
> /etc/ppp/options
> contains:
> -----------------------
> -detach
> asyncmap 0
> netmask 255.255.255.0
> proxyarp
> lock
> crtscts
> modem
> noauth
> ms-dns 192.168.1.1
> ms-dns 192.168.1.1
> ---------------------
> 
> /etc/ppp/options.ttyS0
> contains:
> -----------------------
> 192.168.1.10:192.168.1.171
> -----------------------
> 

I *THINK* you need to specify 'defaultroute' in your /etc/ppp/options 
file to allow the ppp connection to change the computers default route 
to run through your modem ppp connection.

check what 'route -n' gives you while you're connected.

Regards,
Ed.