I am having trouble setting up the IP address on my new server. I go to system>network connections. I add a new connection, I then go to the IPv4. Change method to manual. Setup my address, and Netmask to the same as another machine I have. The address is different than the other machine. and set the gateway to the same as the other machine. The results is I cannot use firefox, but I can ping my other machine from the new box. I not sure why firefox will not work?

please show us the output of ifconfig -a and route -n

that would be " RHEL 6.0 " and not the current Redhat Enterprise Linux 6
RHEL 6.4

and NOT the very old RH6.0 from 1999


did you set up the ipv4 to receive ip address ONLY
or is it also using your ISP's DNS

I normally disallow the isp's dns and use google ( 8.8.8.8 and 8.8.4.4 )

Chris here is your answer.

ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:16:35:3A:AE:89
inet addr:172.168.1.8 Bcast:172.168.255.255 Mask:255.255.0.0
inet6 addr: fe80::216:35ff:fe3a:ae89/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:5843 errors:0 dropped:0 overruns:0 frame:0
TX packets:45 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:841894 (822.1 KiB) TX bytes:6211 (6.0 KiB)
Interrupt:17

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:8 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:480 (480.0 b) TX bytes:480 (480.0 b)

route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
172.168.0.0 0.0.0.0 255.255.0.0 U 1 0 0 eth0
0.0.0.0 172.168.1.20 0.0.0.0 UG 0 0 0 eth0

John VV

I have Red Hat Enterprise Linux Server
Release 6.0 (Santiago)

Thanks for your replys!!

Mark

OK,

so that IS the correct gateway? Is that really a /16 subnet? 255.255.0.0?? Ewww.

can you ping a website name? Does it resolve the name to an IP address? should you be using a proxy instaead of connecting directly?

The 172.168.1.20 is my router that is connected to the modem. Yes, I use a submask of 255.255.0.0.

My other machine that has a static ip address does not use a proxy, but I can try that.

Thanks!!

What do you mean 172.168.1.20 is your router? This is an routable IP address that belongs to AOL. Is your server behind NAT?

The router that is connected to the DSL modem. I have several machines connected to it.

If this is an internal LAN (as it sounds) you should only use IPs in the approved private ranges https://en.wikipedia.org/wiki/Private_network.
As above, 172.168.x.x would be an external address range already owned by someone else.

Sorry I have been offline for surgery.

I have worked on my system today, and found that the IP address did not matter, but I now set to the standard. I found a switch in Red Hat 6 that needed to be set to server and not desktop in the firewall. I am now up and running.

Thanks for all the help!!

Mark