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gladiator




Joined: Jun 30, 2007
Posts: 16



(Msg. 1) Posted: Sat Nov 03, 2007 8:50 pm
Post subject: Vista tracert returns only one line
I have discovered a totally weird thing going on. Any tracert I enter produces only one line of results. Here is an example:

>tracert google.com

Tracing route...<deleted>..maximum of 30 hops:

1 28 ms 32 ms 25 ms jc-in-f99.google.com [64.233.187.99]

I get only such a one line result no matter what domain is entered for tracert to. Everything comes back as one hop.

???


Last edited by gladiator on Tue Jan 08, 2008 12:54 pm; edited 2 times in total
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gladiator




Joined: Jun 30, 2007
Posts: 16



(Msg. 2) Posted: Sun Dec 23, 2007 9:29 pm
Post subject: Re: Vista tracert returns only one line [Login to view extended thread Info.]
Touching the topic to try to resurrect it...

Could someone with vista please do a tracert at a cmd prompt and see if it gives you only one line.

I think the tracert command in vista has been hobbled.
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sjtmbg




Joined: Dec 27, 2007
Posts: 1



(Msg. 3) Posted: Thu Dec 27, 2007 10:47 am
Post subject:
I get exactly this same behavior on Vista - anyone know what's going on here?
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kenjidnb




Joined: Jan 08, 2008
Posts: 4



(Msg. 4) Posted: Tue Jan 08, 2008 11:43 am
Post subject:
Crazy! same thing for me. Tracert to my own router or to the www.google.com router give both on hop!! I feel much more closer to everything thanks to vista tracert!
Another interesting point is that I can't control QoS policy in the group policy editor (i.e. bandwith limitation), it just doesn't work.

Probably an important detail: I'm running vista on a virtual machine, are you guys in the same case?
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gladiator




Joined: Jun 30, 2007
Posts: 16



(Msg. 5) Posted: Tue Jan 08, 2008 11:47 am
Post subject:
I bet you are using Zonealarm.

I discovered on another forum that, sometime after Checkpoint took over Zonealarm, this behavior appeared. They appear to have no interest in fixing it because they do not respond to queries about it, and it has existed for a long time now.

The fix is to install a different firewall.
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kenjidnb




Joined: Jan 08, 2008
Posts: 4



(Msg. 6) Posted: Tue Jan 08, 2008 11:53 am
Post subject:
I don't have any firewall installed on my machine/network.

I've heard about the zone alarm issue and i think it more like a "no answer at all" to the tracert command.

In this current case, tracert gives only one answer: the final hop.
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gladiator




Joined: Jun 30, 2007
Posts: 16



(Msg. 7) Posted: Tue Jan 08, 2008 12:03 pm
Post subject:
.
No, the zonealarm problem is a "one-hop" answer to the tracert.

View this
http://forums.zonealarm.org/zonelabs/board/message?board.id=cfg&me...ge.id=4

It is hard to read; you have to open each reply separately.

But your situation is very interesting...getting the same symptom without ZA. Has it EVER been installed on that machine?
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kenjidnb




Joined: Jan 08, 2008
Posts: 4



(Msg. 8) Posted: Tue Jan 08, 2008 12:09 pm
Post subject:
Sorry I did not see you wrote the previous messages.

I dont use zone alarm and I even deactivated windows firewall, but same thing.. one crazy hop.
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gladiator




Joined: Jun 30, 2007
Posts: 16



(Msg. 9) Posted: Tue Jan 08, 2008 12:18 pm
Post subject: [Login to view extended thread Info.]
kenjidnb wrote:
...I dont use zone alarm and I even deactivated windows firewall, but same thing.. one crazy hop.

This is a major input to this problem--that it occurs outside a zonealarm environment. And very confusing. A person on the other forum said they had the problem, uninstalled ZA, problem disappeared (tracert worked right), reinstalled ZA, back to one line results. That seemed to clearly point to ZA as the problem.

Now I don't know what to think.

Last edited by gladiator on Tue Jan 08, 2008 12:23 pm; edited 1 time in total
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gladiator




Joined: Jun 30, 2007
Posts: 16



(Msg. 10) Posted: Tue Jan 08, 2008 12:22 pm
Post subject:
I did a packet capture of what is going out when tracert is commanded, and the packets had a TTL of 128. With a tracert, it is supposed to send sequential packets with TTL at 1,2,3,4...up to whatever, until the destination machine is reached.

So the immediate cause is that tracert is somehow being forced to not work in its normal manner. Duh. We knew that.
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kenjidnb




Joined: Jan 08, 2008
Posts: 4



(Msg. 11) Posted: Tue Jan 08, 2008 12:45 pm
Post subject: [Login to view extended thread Info.]
gladiator wrote:
..when tracert is commanded, and the packets had a TTL of 128...


Very interesting, so according to your sniff, Vista add the ttl of 128 at the beginning? So that's why the packets go through all the hops till it can't go beyond.
I wonder why this starting ttl?
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gladiator




Joined: Jun 30, 2007
Posts: 16



(Msg. 12) Posted: Tue Jan 08, 2008 12:53 pm
Post subject:
TTL of 128 is the standard TTL for a ping, but there is a switch you can use with it to change that. Tracert is supposed to (without you ever seeing what is going on) cause sequential pings with appropriate switch settings and parameters for each time, that gives the data you see on the screen.

Somewhere, it is being caused to not do this right.
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