Re: How to get ethernet connection?

Hi Joe,

On Sun, Jun 24, 2012 at 6:36 PM, <joe@actionline.com> wrote:

> What do I need to do to get an ethernet connection?
>
> I have an ethernet connection on two computers plugged in to my motorola
> modem/router (there are four ports) but another computer plugged in to one
> of the open ports does not get a connection. I can get a wireless
> connection on the same computer, but no wired connection.
>
> Under network settings, I see the following:
> (*) Automatic IP is checked
> ( ) Manual configuration is not checked
>
> IP address is grayed out
> Netmask is grayed out
> Gateway is grayed out
> [ ] Get DNS servers from DHCP was checked
> but I unchecked it and tried 206.67.222.222 and 220 for DNS servers 1 and 2
> (that didn't help)
> (*) Allow users to manage the connection is checked
> (*) Start the connection at boot is checked
> (*) Enable traffic accounting is checked
> Under "Advanced" settings: IP settings
> Search domains [ (is blank) ]
> DHCP client [ dhclient ]
> DHCP timeout (in seconds) [ (is blank) ]
> [*] Get YP servers from DHCP is checked
> [ ] Get NTPD servers from DHCP is blank
> DHCP host name [ (is blank) ]
> Metric [ 10 ]
> MTU [ (is blank) ]
> [*] Network Hotplugging is checked
> [*] Enable IPv6 to IPv4 tunnel (was blank; I tried checking it)
>
> Why does Linux make all this so convoluted/complex/complicated
> instead of pre-setting everything so it all "just works"?
>

Let's get some background to answer your question as to why Linux makes all
this so complicated:
What distro are you setting up?

Let's go from bottom up:

A) Do you have link light on the card and router?
B) What does the last few entries in "dmesg" show you?
C) What does "tail /var/log/messages" show you [alternately try "tail
/var/log/syslog"]:

Answer back with that info and we can go from there....

Some things to "try" if you have network manager:

Remove the /etc/sysconfig/network-scripts/ifcfg-Wired_connection (copy to
backup), and add a new entry in the Gui.
No joy? simple move it back and enter "service NetworkManager restart"

Check that you don't have iptables enabled (without ports allowed for
67:68):

"iptables-save"
"iptables -F" flushes it (warning if you are using a complex table or
OpenVPN)
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