problems with network connection - reject NAK [SOLVED]

Despot Despondency · Apprentice Joined: 14 Mar 2009 Posts: 176

Hi,

Sorry if this has been posted before but I can't find a solution anywhere. I am having problems with the wired network connection on my computer. At the moment when I boot the computer I often get the message

DONAHUE · Posted: Thu Jun 09, 2011 6:00 am Post subject:

If 192.168.1.254 is in fact your dhcp server, see if editing /etc/dhcpcd.conf to comment out

Despot Despondency · Apprentice Joined: 14 Mar 2009 Posts: 176

Hi, thanks for the response.

I tried your suggestion. I now get the messages

DONAHUE · Posted: Thu Jun 09, 2011 8:45 pm Post subject:

try a fixed ip
or try dhclient vice dhcpcd
check router configuration for access lists
firewall?
proxy server?
_________________
Defund the FCC.

Despot Despondency · Apprentice Joined: 14 Mar 2009 Posts: 176

Hello again.

I don't have a firewall or proxy server set up. This is a fresh install so I only have the bare basics set up.

I managed to set up a static ip. I used the ip address etc that dhcp used last time it successfully loaded the network.

I am confused about why dhcp keeps failing sporadically?

Also, what do you mean by

DONAHUE · Posted: Fri Jun 10, 2011 12:49 am Post subject:

The problem most likely relates to either the router or dhcpcd or both not being totally compliant with the same set of rules.
Most routers can be setup to allow connection from only a limited set of ip's or mac addresses (sic access list).
_________________
Defund the FCC.

Despot Despondency · Apprentice Joined: 14 Mar 2009 Posts: 176

OK, that makes sense.

It's weird though. I've had this router for over a year and it's always been fine before.

Is there anyway to resolve this?

Otherwise I just start using a static ip permanently. Is there anything I need to take into account when doing this, e.g. security issues with certain ranges of addresses? Sorry if this is a stupid question.

DONAHUE · Posted: Fri Jun 10, 2011 6:46 am Post subject:

reasonable question, I would try to determine the range of IP's the router uses for dhcp leases and use a fixed IP outside the range. A fixed IP could actually be more secure. Router updates, dhcpcd revisions, neighbor on the same frequency..
_________________
Defund the FCC.

Despot Despondency · Apprentice Joined: 14 Mar 2009 Posts: 176

Sorry for late response. I've had paper deadlines and a holiday and this is the first chance to sort out my computer.

Thanks for the help. Everything seems to be working fine now.

bwhmather · n00b Joined: 11 Jul 2011 Posts: 1

Couple of weeks slow but I have encountered this problem.
In my case setting the clientid option in dhcpd.conf did the trick.