[SOLVED] linux box not working with netgear router

dvdljns · 11-28-2009, 04:13 AM

I have a netgear router with both windows and linux connected to it. my windows works good but the ubuntu linux does not work. the netgear router assigns it an ip but does not show it is connected and does not let it access the internet. I do not want to put it in a dmz zone. does anyone know why it is not working with the router.

catkin · 11-28-2009, 04:20 AM

What exactly do you mean by "does not work"? What is the Netgear router's IP address? Please post the output from

Code:

ifconfig
route
ping <Netgear router's IP address>
ping 75.126.162.205
nslookup linuxquestions.org
ping linuxquestions.org

dvdljns · 11-28-2009, 05:18 AM

Quote:

Originally Posted by catkin

What exactly do you mean by "does not work"? What is the Netgear router's IP address? Please post the output from

Code:

ifconfig
route
ping <Netgear router's IP address>
ping 75.126.162.205
nslookup linuxquestions.org
ping linuxquestions.org

Code:

eth0      Link encap:Ethernet  HWaddr 00:13:46:E6:BF:73  
          inet addr:192.168.0.130  Bcast:192.168.0.255  Mask:255.255.255.128
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:15 errors:0 dropped:0 overruns:0 frame:0
          TX packets:34 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:3766 (3.6 KiB)  TX bytes:6850 (6.6 KiB)
          Interrupt:3 Base address:0xd800 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:28 errors:0 dropped:0 overruns:0 frame:0
          TX packets:28 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:1400 (1.3 KiB)  TX bytes:1400 (1.3 KiB)

Code:

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.0.128   *               255.255.255.128 U     0      0        0 eth0
link-local      *               255.255.0.0     U     1000   0        0 eth0

I can ping my windows comp
I can ping the router

I can not ping my internet gateway or anything on the internet.

sadiqdm · 11-28-2009, 05:43 AM

Which Netgear router do you have? Are you connecting by ethernet cable or wireless?

I have had problems with some Netgear routers with wireless, but it seems to be a combination of Linux and a particular INPROCOMM wireless adaptor. The symptom is the connection to the router is made, but it won't authenticate if you have encryption turned on - either WEP or WPA.

If you are using a wired connection, then look for a setting that enables connections by MAC address. Alternatively some routers have a built in firewall as well.

catkin · 11-28-2009, 07:33 AM

Quote:

Originally Posted by dvdljns

Code:

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.0.128   *               255.255.255.128 U     0      0        0 eth0
link-local      *               255.255.0.0     U     1000   0        0 eth0

...

I can not ping my internet gateway or anything on the internet.

What is the IP address of your router and your internet gateway?

Any particular reason you are using a netmask of 255.255.255.128? AIUI, that means you can only connect to 192.168.0.1-126. For 192.168.x.x addresses the usual netmask is 255.255.255.0.

Looks like you are missing the default gateway. Here's from a Slackware 13.0 system

Code:

root:~# route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
localnet        *               255.255.255.0   U     0      0        0 eth0
loopback        *               255.0.0.0       U     0      0        0 lo
default         192.168.1.1     0.0.0.0         UG    1      0        0 eth0

What do you mean by "internet gateway"? Most commonly your router would also be the device that connects to your ISP and thence to the Internet -- so your internet gateway would be your router ... ?

Which distro are you using (methods of configuring the netmask and the default route vary)?

dvdljns · 11-28-2009, 01:34 PM

I reloaded ubuntu and now I am on. There is nothing default or standard about this setup. I connect through a router that connects to a proxy server that connects to a router that connects to a cable modem.but it works.