Hi,

First post so please excuse any missteps in explaining this issue.

I am running a CentOS6 box on some old hardware to act as a media server. I'm using Plex as my media server. I have configured eth0 to use a static IP address in the 192.168 range. The media server communicates without any problem on my internal network but is unable to communicate beyond my router.

Pings return ping: unknown host

I changed the boot protocol to DHCP and that resolves the issue, but it negates what I'm trying to do with the system. Here is a copy of my ifcfg-eth0 file.

DEVICE=eth0
HWADDR=00:25:22:C9:90:09
TYPE=Ethernet
UUID=4b067d69-eaa4-42f8-b236-4198a0fb3af8
ONBOOT=yes
NM_CONTROLLED=no
BOOTPROTO=dhcp

If a copy of the static IP info is needed, I can provide that. Leaving it as DHCP so I can update the system.

How do I update my network protocol to use a static IP assigned from my router and still have the server access the internet?

Thanks in advance for any help.

Set your DNS settings correctly. Presumably your router is also a DNS server, and is the one you want this machine to use. Assuming your router's IP is 192.168.1.1, in ifcfg-eth0, set:
DNS1=192.168.1.1

1 members found this post helpful.

format is what I have been using on CentOS release 5.10 (Final)

YMMV on CentOS 6.

This is what my ifcfg-eth0 looks like while set up for static:

DEVICE=eth0
HWADDR=xx:xx:xx:xx:xx:xx
TYPE=Ethernet
UUID=blahblah
ONBOOT=yes
NM_CONTROLLER=no
BOOTPROTO=static
IPADDR=192.168.1.21
NETMASK=255.255.255.0
GATEWAY=192.168.1.1

When it's configured that way, I only get access within my network. I can SSH to it, even FTP to it, but oddly, if I try to transfer anything the connection dies (not sure if this problem is related or not, just an observation). This configuration seems to jive with what Habitual said.

Will continue to muck about with that configuration. Will update if I get it working.

Found a CentOS 6.4 host, it may yield a clue:
My guess at this hour is you need

1 members found this post helpful.

By George I think that's done it. So far so good at any rate. Restart network service, it picked up the designated IP, system can connect both internally and externally. It even fixed the FTP issues I was seeing.

Thanks so much!

Glad it worked out.