Changed network

[cantthinkofanickname]

I have taken my server home to try to get it setup over the hols. Thing is my network at home is 192.168.1.x but normally at work is 192.168.0.x. I have managed to get the server added so I can see its shares on one of my machines but if I try to ping from the server to say 192.168.1.66 (my testing laptop assigned by dhcp from my home router) I get no response (even if I try to type it's name (lt7) in. I have tried "nmblookup 192.168.1.66" which fails (but is ok at work).

I am using webmin because the server has no keyboard/screen. It does say in the webmin network config/routing and gateways screen that the gateway is 192.168.0.1 (router at work), whereas the router at home is 192.168.1.254. I am wondering if my server cannot access outwards even though I can access it's shares etc.

The webmin network interface does seem to offer static routes and local routes but I'm wary of messing up the system.

Some help appreciated.

[linux_tech]

What is output of the following-
In terminal type:
sudo lshw -C network
ifconfig
cat /etc/resolv.conf
netstat -l -np -p
netstat -rn
cat /etc/network/interfaces

[volkswagner]

First create a backup of /etc/network/interfaces file.

sudo cp /etc/network/interfaces /etc/network/interfaces.bak

You can then enable DHCP or set a static route. If this is temporary DHCP will probably suffice, unless you have multiple computers on the land that power on and off often.

***SAMPLE FILE***
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
address 192.168.1.110
netmask 255.255.255.128
network 192.168.1.1
broadcast 192.168.1.127
gateway 192.168.1.1

Since you have a backup now edit. You can comment out existing network information or edit it directly.

If you want to enable DHCP change

iface eth0 inet static

to

iface eth0 inet dhcp

Then comment out the rest like..

#address 192.168.1.110
# netmask 255.255.255.128
# network 192.168.1.1
# broadcast 192.168.1.127
# gateway 192.168.1.

Or you can keep it static and assign the address, netmask and gateway according to your router.

Either way when done restart networking.

sudo /etc/init.d/networking restart

Test your internet connection.

host google.com

Hope this helps

[cantthinkofanickname]

For LinuxTech:

> sudo lshw -C network
*-network
description: Ethernet interface
product: RTL-8139/8139C/8139C+
vendor: Realtek Semiconductor Co., Ltd.
physical id: f
bus info: pci@0000:00:0f.0
logical name: eth0
version: 10
serial: 00:30:1b:ac:25:14
size: 100MB/s
capacity: 100MB/s
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=8139too driverversion=0.9.28 duplex=full ip=192.168.0.2 latency=32 link=yes maxlatency=64 mingnt=32 module=8139too multicast=yes port=MII speed=100MB/s
> ifconfig
eth0 Link encap:Ethernet HWaddr 00:30:1b:ac:25:14
inet addr:192.168.0.2 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::230:1bff:feac:2514/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:41330 errors:0 dropped:0 overruns:0 frame:0
TX packets:39081 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:4507456 (4.5 MB) TX bytes:5846432 (5.8 MB)
Interrupt:18 Base address:0xbc00

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:34648 errors:0 dropped:0 overruns:0 frame:0
TX packets:34648 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2904398 (2.9 MB) TX bytes:2904398 (2.9 MB)

> cat /etc/resolv.conf
nameserver 192.168.0.1
> netstat -l -np -p
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:139 0.0.0.0:* LISTEN 5240/smbd
tcp 0 0 0.0.0.0:10000 0.0.0.0:* LISTEN 4425/perl
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 4356/apache2
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 3950/sshd
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 4242/exim4
tcp 0 0 0.0.0.0:445 0.0.0.0:* LISTEN 5240/smbd
tcp6 0 0 :::22 :::* LISTEN 3950/sshd
udp 0 0 192.168.0.2:137 0.0.0.0:* 5238/nmbd
udp 0 0 0.0.0.0:137 0.0.0.0:* 5238/nmbd
udp 0 0 192.168.0.2:138 0.0.0.0:* 5238/nmbd
udp 0 0 0.0.0.0:138 0.0.0.0:* 5238/nmbd
udp 0 0 0.0.0.0:10000 0.0.0.0:* 4425/perl
udp 0 0 192.168.0.2:123 0.0.0.0:* 3653/ntpd
udp 0 0 127.0.0.1:123 0.0.0.0:* 3653/ntpd
udp 0 0 0.0.0.0:123 0.0.0.0:* 3653/ntpd
raw 0 0 0.0.0.0:1 0.0.0.0:* 7 7420/ping
raw 0 0 0.0.0.0:1 0.0.0.0:* 7 7200/ping
raw 0 0 0.0.0.0:1 0.0.0.0:* 7 7131/ping
raw 0 0 0.0.0.0:1 0.0.0.0:* 7 6039/ping
raw 0 0 0.0.0.0:1 0.0.0.0:* 7 5969/ping
Active UNIX domain sockets (only servers)
Proto RefCnt Flags Type State I-Node PID/Program name Path
unix 2 [ ACC ] STREAM LISTENING 13304 3967/perl /var/lib/backuppc/log/BackupPC.sock
unix 2 [ ACC ] STREAM LISTENING 13680 4279/winbindd /var/run/samba/winbindd_privileged/pipe
unix 2 [ ACC ] STREAM LISTENING 13678 4279/winbindd /tmp/.winbindd/pipe
unix 2 [ ACC ] STREAM LISTENING 13223 3931/dbus-daemon /var/run/dbus/system_bus_socket
unix 2 [ ACC ] STREAM LISTENING 13776 4357/apache2 /var/run/apache2/cgisock.4356
> netstat -rn
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0 eth0
> cat /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
address 192.168.0.2
netmask 255.255.255.0
network 192.168.0.0
broadcast 192.168.0.255
gateway 192.168.0.1

I will study Volkswagner's input but will wait for a respose to the data I've supplied. Will the configuration hold for both network situations or will I have to tweak it each time (probably the Samba workgroup at least)?

[cantthinkofanickname]

This is my current interfaces file:

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
#address 192.168.0.2
#netmask 255.255.255.0
#network 192.168.0.0
#broadcast 192.168.0.255
#gateway 192.168.0.1

I'm a little unsure what Volkswagner is suggesting. Is my current one OK?

UPDATE. I tried Volkswagners suggestion and lost all remote (webmin, etc.) to the server. After some fiddling with VI managed to restore the original spec. I think my problem is that the interfaces file points to the other networks IPs. How do I build in my home network of 192.168.1.x as well as having 192.168.0.x?