Fedora Users — Re: DNS or network problem

Below is the output from the machine that works:

ifconfig:
eth0      Link encap:Ethernet HWaddr 00:40:33:AA:94:56
          inet addr:192.168.1.199 Bcast:192.168.1.255 Mask:255.255.255.0
          inet6 addr: fe80::240:33ff:feaa:9456/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:10263 errors:0 dropped:0 overruns:0 frame:0
          TX packets:129 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:3210318 (3.0 Mb) TX bytes:10568 (10.3 Kb)
          Interrupt:10 Base address:0xec00

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:171 errors:0 dropped:0 overruns:0 frame:0
          TX packets:171 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:11228 (10.9 Kb) TX bytes:11228 (10.9 Kb)

route:
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.1.0     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 eth0
0.0.0.0         192.168.1.1     0.0.0.0         UG    0      0        0 eth0

Here's the ouput from the machine that's not working:

ifconfig:
eth0      Link encap:Ethernet HWaddr 00:03:47:DE:F2:B5
          inet addr:192.168.1.198 Bcast:192.168.1.255 Mask:255.255.255.0
          inet6 addr: fe80::203:47ff:fede:f2b5/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:75 errors:0 dropped:0 overruns:0 frame:0
          TX packets:9 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:24217 (23.6 Kb) TX bytes:546 (546.0 b)

eth1      Link encap:Ethernet HWaddr 00:03:47:DE:EF:D3
          inet addr:192.168.1.198 Bcast:192.168.1.255 Mask:255.255.255.0
          inet6 addr: fe80::203:47ff:fede:efd3/64 Scope:Link
          UP BROADCAST MULTICAST MTU:1500 Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:9 errors:9 dropped:0 overruns:0 carrier:9
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 b) TX bytes:546 (546.0 b)

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:10 errors:0 dropped:0 overruns:0 frame:0
          TX packets:10 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:700 (700.0 b) TX bytes:700 (700.0 b)

route:
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 eth1
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 eth1
169.254.0.0     0.0.0.0         255.255.0.0     U     0      0        0 eth1
127.0.0.0       0.0.0.0         255.0.0.0       U     0      0        0 lo
0.0.0.0         192.168.1.1     0.0.0.0         UG    0      0        0 eth1

--- On Sun 02/11, Mikkel L. Ellertson wrote:Bruce Hyatt wrote:
> I have a new fedora installation and I can't get it to connect to
> my network; not to other computers on my network nor to the internet.
>
> It is connected through a hub to a router using a static IP
> address. I have another linux box connected without any problems
> through the same hub, it's not a problem with the NIC and it's not a
> problem with the cable.
>
> Yes, I have enabled ip forwarding in /etc/sysctl.conf
>
This should not be necessary unless you have more then one interfaceon the computer. For a system connected directly to a hug or router,you are not forwarding IP connections. That is for a system withmore then one connection, and you want to forward connections fromone interface to another.
> I've compared all the network settings on the two computers andthey're the same except for one thing; the one that is working hasIPTables running. The one that won't work doesn't even have the tables.
>
> Could it be that not having IPTables configured and running is the problem?!!!
>
> Thanks in advance,
> Bruce
>
I do not think it is IP tables. It wounds more like your static IPaddress for the new machine is wrong. Are you sure it is in the samenetwork as the other machines, and that is doesn't duplicate theaddress of another machine? Also, are you sure the Interface is upon the new install?If you would post the output of ifconfig and "route -n" from boththe machine that works, and the one that doesn't, we would have abetter idea of what is going on, and may be able to help you.Mikkel-- Do not meddle in the affairs of dragons,for thou art crunchy and taste good with Ketchup!

--- On Sun 02/11, Guillermo Garron < guillermo.fedora@xxxxxxxxx > wrote:From: Guillermo Garron [mailto: guillermo.fedora@xxxxxxxxx]To: bjhyatt@xxxxxxxxx, fedora-list@xxxxxxxxxxxxxx: Sun, 11 Feb 2007 01:18:11 -0400Subject: Re: DNS or network problemOn 2/10/07, Bruce Hyatt wrote:>> I have a new fedora installation and I can't get it to connect to my network; not to other computers on my network nor to the internet.>> It is connected through a hub t! o a router using a static IP address. I have another linux box connected without any problems through the same hub, it's not a problem with the NIC and it's not a problem with the cable.>> Yes, I have enabled ip forwarding in /etc/sysctl.conf>> I've compared all the network settings on the two computers and they're the same except for one thing; the one that is working has IPTables running. The one that won't work doesn't even have the tables.>> Could it be that not having IPTables configured and running is the problem?!!!I think -no way-but help you better could you please describe your network better?what is the IP/mask/def_gateway of the two PCs the working and not working?The IP of the router they are using to get the Internet?Also you can try this.use this command on the working and not working PCtcpdump -i any -s 1500 -w capture.cap--- first turn off the firewall on the working PC --- then analysethese files with Ethereal software, or if you want put th! e files wherewe I can download them and I will try to help you.If you do not have tcpdump use$yum install tcpdumpregards,-- Guillermo Garron"Linux IS user friendly... It's just selective about who its friends are."(Using FC6, CentOS4.4 and Ubuntu 6.06)http://feeds.feedburner.com/go2linuxhttp://www.go2linux.org

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