Can not run traceroute [SOLVED]

vytalelementz · 2007-09-29 20:56:59

Hello arch world,

I decided out of the blue to run a traceroute on my computer to see what I get but the only result I get when running one at any location is this (for yahoo.com:

1 launchmodem (192.168.1.254) 0.483 ms 0.413 ms 0.364 ms
2 * * *
3 * * *
4 * * *
5 * * *
6 * * *
7 * * *
8 * * *
9 * * *
10 * * *
11 * * *
12 * * *
13 * * *
14 * * *
15 * * *
16 * * *
17 * * *
18 * * *
19 * * *
20 * * *
21 * * *
22 * * *
23 * * *
24 * * *
25 * * *
26 * * *
27 * * *
28 * * *
29 * * *
30 * * *

I know it's not an ISP issue because I tried traceroute on a windows laptop and it ran successfully (something in windows working successfully over linux? what the hell is the world coming to:) ). I tried this both connected to the router and connected directly to the modem as you can see. I also did this from someone else's modem and same result. Is there something I need to install or is there some setting I need to switch on from os's end to have this running successfully. Does it have something to do with the resolv.conf configuration even though it is set for dhcp? I'm not exactly network savvy since I'm still in the learning stages when it comes to networking so any help is appeciated. Thanks in advance.

The vytalone!

Last edited by vytalelementz (2008-05-08 02:25:05)

robertp · 2007-09-30 09:42:16

Traceroute works differently on Windows and Unix. It uses UDP on Unix by default. On Windows probably 'ICMP Echo Request' (type=8) is used.

I guess it is an ISP issue. They are filtering traffic on closed UDP port without any ICMP response which is wrong but very common practice.

Running traceroute with -I option may work for you.
Try also 'ping -R -n -v'.

Last edited by robertp (2007-09-30 10:43:50)

vytalelementz · 2007-09-30 15:14:13

oh ok I had no idea that unix traceroute works differently by default. I have tried your suggestion and it works so thanks for the help and I have learned something new today :-D. I also have another reason to switch ISPs lol.

Arch Linux

#1 2007-09-29 20:56:59

Can not run traceroute [SOLVED]

#2 2007-09-30 09:42:16

Re: Can not run traceroute [SOLVED]

#3 2007-09-30 15:14:13

Re: Can not run traceroute [SOLVED]

Board footer