Can't Navigate My LAN Or Ping

[Joep L. Blom]

Leonard Chatagnier schreef:
> --- On Sat, 12/6/08, scott <redhowlingwolves at nc.rr.com> wrote:
> 

> Think I've done that before but here it is again.
> But you may have to interpret it as it looks like
> it says 192.168.1.254 that it always has been.
> lchata at ubuntu:~$ netstat -Frn
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
> 192.168.1.0     0.0.0.0         255.255.255.0   U         0 0          0 eth0
> 192.168.1.0     0.0.0.0         255.255.255.0   U         0 0          0 wlan0
> 169.254.0.0     0.0.0.0         255.255.0.0     U         0 0          0 wlan0
> 0.0.0.0         192.168.1.254   0.0.0.0         UG        0 0          0 wlan0
> 0.0.0.0         192.168.1.254   0.0.0.0         UG        0 0          0 eth0
> lchata at ubuntu:~$
> 
>
> The router was unplugged yesterday while talking to ATT but the
> problem existed well before I unplugged it.  I'm going to do a manual
> reset of the router using the button on the back side but not before I
> hear from NoOp and Nils who first responded to this thread.  Don't want
> to do something to break the chain until I hear from them.  Thanks for 
> your input and please tell me your thoughts on the output of netstat -Frn.
> Does it not verify that my gateway/router IP is 192.168.1.254? I ask because
> I'm not very network literate.
> 
> Leonard Chatagnier
> lenc5570 at sbcglobal.net 
Leonard,
I think there is some confusion. When using a router/modem, there are 2 
different networks.
One, the internal network controls the internal net with local 
computers, the other is the gateway to the internet. So in a 
router/modem there are 2 network cards. Most modems/routers has an 
internal DHCP server that gives the network IP adresses to the local 
computers, using the network card dedicated to the internal net, very 
often eth1 (of the modem/router). Many of them use the 192.168.0.x 
(local C-network) but other B-network addresses are 1, or 100, or 200, etc.
The network card connected to the external network (generally called" 
the internet") gets it IP-address from the ISP. Here  (in the 
Netherlands) when being connected via a provider cable network (not 
telephone) the IP addresses are dynamic i.e. the DHCP-server of the ISP 
delivers the IP-address for the gateway. Providers using ADSL (the 
telephone lines) sometimes provide static IP-addresses.
I have a different setup with a dedicated firewall+DHCP system and an 
internal wireless router but that is not relevant for question.
Joep