Linksys WRT55AG Ver.2

[DRLev]

I made a very foolish mistake and purchased a Linksys WRT55AG Ver.2 router. I
now realize the error of my ways :-)

I cannot perform a tracert using either tracert from the command line or using
VIsualRoute. ICMP packets are blocked. VisualRoute tells me "There appears to
be a firewall at hop 0 or 1 that is blocking incoming ICMP TTL expired in
transit"

I have attempted everything that seems reasonable in the router configuration
including disabling the firewall. Nothing has worked. I cannot do a trace
route.

Linksys support has been totally useless in this situation. Web, voice and
email support all get to the point at which the issue needs to go to a higher
level, this higher level is a "black hole".

Does anybody have experience with this router? Could you suggest a way to
enable trace route?

[D. Stussy]

How about the "DMZ" mode? Granted, if this works, only one machine in your
network will be able to do this, but that's enough.

[DRLev]

Thanks

That was one of the 1st things I tried. It made no difference.

"D. Stussy" <kd6...@bde-arc.ampr.org> wrote in message
news:Pine.LNX.4.62.0...@kd6lvw.ampr.org...

[Jeff Liebermann]

On Thu, 05 May 2005 17:24:43 GMT, "DRLev" <m...@privacy.net> wrote:

>I made a very foolish mistake and purchased a Linksys WRT55AG Ver.2 router. I
>now realize the error of my ways :-)
>
>I cannot perform a tracert using either tracert from the command line or using
>VIsualRoute. ICMP packets are blocked. VisualRoute tells me "There appears to
>be a firewall at hop 0 or 1 that is blocking incoming ICMP TTL expired in
>transit"

Bummer. Do you have a Linux machine or "live CD" handy? Linux
treaceroute uses UDP ping by default. It can also do ICMP with the -I
flag. Windoze uses only ICMP. Might be worth trying UDP.

>I have attempted everything that seems reasonable in the router configuration
>including disabling the firewall. Nothing has worked. I cannot do a trace
>route.

Can you traceroute from your client to the router? If that doesn't
work, then there's something busted on the client, not the router.
Windoze XP SP2 firewall perhaps?

Not very thrilling output:
C:\> tracert 192.168.1.1
Tracing route to 192.168.1.1 over a maximum of 30 hops
1 2 ms 2 ms 2 ms 192.168.1.1
Trace complete.

I assume you're using the 1.11 version firmware for WRT55AGv2:
http://www.linksys.com/download/firmware.asp?fwid=230
There is a different (not later) 1.30 version on the international
site:
http://www.linksys.com/international/firmware.asp?intfwid=91&coid=6
Might be worth a try.

>Linksys support has been totally useless in this situation. Web, voice and
>email support all get to the point at which the issue needs to go to a higher
>level, this higher level is a "black hole".

>Does anybody have experience with this router? Could you suggest a way to
>enable trace route?

--
Jeff Liebermann je...@comix.santa-cruz.ca.us
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 AE6KS 831-336-2558

[DRLev]

Thanks

I can tracert anyplace within the home network.

If I connect my computer directly to the cable modem (eliminate the Linksys) I
have no problems doing a tracert.

I could make a bootable network enabled Linux CD, or run Linux in a VM and see
what happens.

"Jeff Liebermann" <je...@comix.santa-cruz.ca.us> wrote in message
news:bd1r71hidrrkhg6bh...@4ax.com...

[Jeff Liebermann]

On Sun, 08 May 2005 21:45:52 GMT, "DRLev" <m...@privacy.net> wrote:

>I can tracert anyplace within the home network.

OK. Then your traceroute program isn't broken.

>If I connect my computer directly to the cable modem (eliminate the Linksys) I
>have no problems doing a tracert.

Then it must be the Linksys WRT55AG.

>I could make a bootable network enabled Linux CD, or run Linux in a VM and see
>what happens.

Yeah, it would be interesting but doesn't really solve the problem.
Actually, I don't have a clue what's broken. At this point, I would
usually shove a hub (not a switch) between the cable modem and the
router and connect a computer running Ethereal to do some sniffing.
However, that will only verify that the ICMP packets are coming back
from the server. Not very useful.

There are quite a few nasty comments about the WRT55AG in the
DSLReports.com forums, but nothing specifically mentioning traceroute
or tracert. The lack of comments on the topic imply that there may be
something odd with your unit, firmware, setup, or ISP.

Some more things to try:
1. Reset everything to defaults and start over. Sometimes, garbage
gets into the NVRAM settings that are cleared with a reset.

2. Try a traceroute backwards, *FROM* a traceroute (web) server back
to your router. There may be a WRT55AG setting somewhere labeled
"disable anonymous access from WAN" or something similar. That should
NOT be checked. No clue where it's hidden on the WRT55AG. Then, try
one of these traceroute servers:
http://www.traceroute.org/#USA
and see if you can run traceroute back to your IP address. Oh
wonderful. Firefox 1.0.3 crashed repeatedly when I tried to
traceroute back to my IP address using:
http://visualroute.visualware.com
Trying a different one (UC Berkeley) stops at my ISP's router. Looks
like I've got a problem here or my ISP is blocking ICMP responses.

[D. Stussy]

If all else fails, Linksys does have a source tarball for the router as a
downloadable file (quite large; about 130Mb). I think that it's running an
embedded version of Linux, but I don't know if the appropriate cross-compiler
is available. Feel free to compile your own version of the kernel and
utilities, and flash your device. I have not done that to mine.

[DRLev]

Thanks

It may be next weekend before I will have time to troubleshoot the router. I do
appreciate your input. The "I've tried that" responses I am giving are my fault
because my original post was not thorough.

I have set the router back to defaults more than once and started from scratch.
No avail.

I will try the reverse tracert and see what happens, I have toggled the "Block
Anonymous Internet Requests:" I will allow anonymous requests before I attempt
the reverse tracert.

I believe that many of the options on the configuration menus for this router
are "dummies", they actually perform no function or do not "throw any
switches". I am hoping an update is released soon. It is almost as if the
existing firmware is in early beta.

"Jeff Liebermann" <je...@comix.santa-cruz.ca.us> wrote in message

news:5h9t711mam52ptghe...@4ax.com...

[DRLev]

Thanks

But I AFAIK there is no GPL for the WRT55AG version 2, there is a GPL for the
WRT55AG.

I have not verified this and I know that NG info is not gospel, but somebody in
another NG posted a message saying the WRT55AG version 2 is not Linux based.
But then even if it was I do not have the skills or knowledge to edit the code.

I do appreciate your response

"D. Stussy" <kd6...@bde-arc.ampr.org> wrote in message
news:Pine.LNX.4.62.0...@kd6lvw.ampr.org...