Questions tagged [traceroute]
Question about the route a request takes to arrive at, and return from its destination, particularly when using the 'traceroute' command-line tool.
57
questions
4
votes
1answer
149 views
“RTNETLINK answers: File exists” after trying to ifup interface
I have 3 different blocks which I'm trying to configure. They used to work normally when I would add all the addresses of the block manually (ip addr add) but I learned that I can just add the entire ...
0
votes
0answers
59 views
Prevent SNAT rules in iptables from being applied to ICMP time exceeded packets?
I have the following rules on a Linux server, to route packets from LAN node 10.0.1.8 (a Windows machine) destined for 192.168.173.93 to 1.2.3.4 and vice versa:
iptables -t nat -I PREROUTING -i br0 -...
2
votes
0answers
109 views
traceroute only shows first hop
I'm trying to use traceroute on a VMware guest Linux machine, and this is the result :
traceroute to 172.217.9.228 (172.217.9.228), 30 hops max, 60 byte packets
1 10.10.0.1 183.499 ms 193.008 ms ...
0
votes
0answers
496 views
Traceroute does not work, output is * * *
I'm trying to check how many servers are between me and domain server(google etc.). I'm using Linux(Ubuntu) subsystem on windows. Command traceroute wasn't working so I used a command sudo apt-get ...
1
vote
1answer
797 views
It is possible to traceroute without touching ICMP?
I often run into a situation where I want to traceroute an IP without root or NET_RAW cap in Linux.
I have attempted to send a UDP packet with a small TTL but no ttl error is emitted at all. It seems ...
-1
votes
2answers
791 views
How do you count the number of hops?
I'm trying to connect to the GAN (Internet) and my final network node is 10.200.0.1
How do I count the number of Hops to reach this final network node? I've tried traceroute 10.200.0.1 But it only ...
1
vote
1answer
4k views
How does MTR (run with TCP protocol) calculate the loss rate?
I thought TCP protocol itself will guarantee not to loose any bytes while connecting. About this viewpoint, please refer to
https://stackoverflow.com/questions/23841896/will-tcp-connection-lose-...
1
vote
1answer
3k views
Traceroute return !x as MTU size
I have 2 directly connected machine running centos 7, wanted to check MTU between them. So used traceroute tool to find it out.
Topology:
M23(10.1.1.20) <-------> M24(10.1.1.10)
Expected ...
1
vote
1answer
2k views
What UDP destination port(s) does mtr -u use?
traceroute sends UDP packets to port 33434 (and up) by default.
I assume mtr -u (manual, homepage, github) does the same, but I can't find any documentation or test results to verify the destination ...
0
votes
0answers
377 views
Script to check server status from polybar
I'm currently running Arch with i3 and polybar. I also maintain 6 servers, so to make my life easier I made a series of shell scripts to notify me if a server is down.
The scripts work, but it's far ...
1
vote
0answers
144 views
Certain ipv6 hosts hang on certain machines on the network
I have this annoying issue where some of the machines on my network will hang when looking up connecting to certain IPv6 addresses, in particular the ones from Google (but I've also seen issues with ...
0
votes
0answers
3k views
How do I figure out why I cant connect using “wget” to an external web site?
I'm using CentOS 7. I'm trying to figure out why I can't connect via wget to an external web site, although most other web sites work and I can connect to this other web site from other computers. ...
14
votes
3answers
7k views
Why does traceroute display many ip addresses for the same hop?
Here is the route path from my home to sina.com.cn.
traceroute -n sina.com.cn
traceroute to sina.com.cn (202.108.33.60), 30 hops max, 60 byte packets
1 192.168.31.1 0.476 ms 0.587 ms 0.695 ms
...
1
vote
1answer
346 views
Query regarding traceroute and ping
While executing the traceroute command, why does the route to same host change at different times of the day?
Why does traceroute not find complete paths to some hosts?
Is it possible to find the ...
-1
votes
2answers
2k views
what firewall rules does traceroute need?
The network team told me I only needed ICMP 8 bi directional for traceroute to work but it still does not seem to be working. ping does work with ICMP 8 being open but what do I need to open for ...
1
vote
1answer
329 views
Why does ping resolve to a different address than traceroute? and lynx?
We have a managed server with centos, recently it starts showing strange behavior:
root@server [/tmp]# ping www.google.com
PING www.google.com (172.217.8.196) 56(84) bytes of data.
64 bytes from ...
3
votes
1answer
573 views
traceroute, only print gateway information
I can't find any info regarding this in the man-pages. How would one go about only printing the gateway using traceroute?
1
vote
1answer
154 views
How to find the MAC address of devices in network path when I do a tracerout?
Scenario:
I am doing traceroute (or any path trace program) from sydney-server1 to london-server2. I can see the route its going with device name and IP address. Is there anyway, I can get those ...
11
votes
1answer
5k views
What is the difference between tracepath and traceroute or are they same?
I see two commands giving similar output but have no idea if there is a difference between the two or not. For e.g.
[$] tracepath debian.org ...
2
votes
1answer
3k views
traceroute have error bind: Cannot assign requested address
I have the below error:
[root@~]# traceroute -s 'publicIP' 8.8.8.8
traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 60 byte packets
**bind: Cannot assign requested address**
But when i did not enter ...
0
votes
1answer
824 views
traceroute: How to show TTL along hops
How could I show remaining time to live counters in mtr or traceroute results?
$ mtr -r -w -c 10 91.250.127.30
Start: Mon May 15 12:20:44 2017
HOST: <snip> Loss% Snt ...
1
vote
1answer
1k views
Why is my trace route (mtr) binding a UDP port when it runs?
I occasionally audit the open ports on my machine to make sure I fully understand my attack surface. When I did this today, I discovered that mtr was listening on a high UDP port (which seemed to ...
2
votes
1answer
195 views
How to use dnstraceroute?
I understand how traceroute works, I give it a domain, it takes 3 packets, tries to go over intermediary servers to the end server. For instance -
[$] traceroute phoronix.com
traceroute to ...
0
votes
1answer
6k views
Can't traceroute on Kali Linux
I have a kali VM running inside Virtual Box.
Traceroute does not work, the immediate resolution of host to IP works, but every hop fails until it reaches max hops. This happens for any host.
My VM ...
1
vote
2answers
2k views
How to output mtr command in human-readable form to standard output?
When I run sudo mtr 4.2.2.1, it runs in the Terminal in a loop.
I'd like to keep the same format as below:
Host
1. 192.168.15.1 ...
0
votes
2answers
594 views
How does MTR work in detail? Shouldn't packet loss be observed to increase linearly?
If so, how come do we see packet loss be distributed unevenly among hops? That is, if there is 5 percent loss in the first hop, the following hops, should start out with 95 percent of the packets ...
1
vote
3answers
184 views
Traceroute - approach the place with connectivity issues
I'm using the traceroute utility to test network connectivity.
The problem is usually with slow speed - that means, the webpages in
the browser are often displayed very slowly. Sometimes the speed of
...
1
vote
2answers
357 views
Traceroute works (very slowly) but internet doesn't work
Ping doesn't work.
And can't connect through Firefox. When entering IP in URL bar it shows "The connection has timed out, The server at 35.1.1.48 is taking too long to respond." after like a minute. ...
1
vote
1answer
228 views
how to use only certain addresses in subnet for traceroute?
First I try running nmap -sn ip/24 to check live hosts on a subnet. It returns that all 255 hosts are live which I know is not true. I do fping -g ip/24 and get that 7 hosts are up which makes more ...
3
votes
1answer
648 views
Why is mtr more reliable than traceroute, on my ISP?
My traceroute6 results are truncated, while the results from mtr span the whole path. Why would this happen?
mtr uses ICMP ECHO by default, just like traceroute. Running traceroute under sudo does ...
0
votes
2answers
731 views
Traceroute — where does it end when user is SSHed?
When you traceroute a user SSHed into a server, does the traceroute end with the server or the computer of the person SSHing?
Or is the answer more nuanced?
0
votes
2answers
121 views
Tracking traffic through a filtered intranet connection
I am performing a traceroute (I also tried a curl out of curiosity, that just stalls) on a publicly available website (so I know my computer should be able to and is allowed to reach it). However, ...
1
vote
2answers
1k views
Why does traceroute send three packets?
I'd like to learn why traceroute sends three packets per hop by default. (Nothing important, I'm just curious).
Edit: packages != packets
1
vote
2answers
32k views
PuTTY (SSH) (tracert) Network error: Software caused connection abort
EDITED: SOLUTION FOUND:
After contacting godaddy, a solution was found very fast (great service!).
What seemed to be the problem was that my IP Address was being blocked, given that I had too many ...
0
votes
1answer
121 views
Access from unknown IP tracks to non-existent website
Just had a warning that my Gmail's been accessed from the following IP: 151.230.107.114 which routes to something called htc_frisbee.com , which doesn't appear to be a real website. Could this just be ...
0
votes
1answer
108 views
Internet running slow. Could someone clarify this traceroute output?
So my internet is running slow. I'm on fedora Linux and I think know what im doing (meaning I'm sure it's not any apps or etc.). But this seems to be some provider related thing (Cox). Looking a this ...
0
votes
1answer
244 views
dig domain replay SOA
I have a domain and when I use
dig jeeja.biz
it just gives me my server ip address.
;; ANSWER SECTION:
jeeja.biz. 13914 IN A 209.15.212.171
But when I use the same command on another ...
1
vote
1answer
332 views
traceroute (with TCP) doesn't capture received ICMP responses
System: Fedora 21
Problem: actually already very well described here but unfortunately without any explanation WHY traceroute with TCP is not displaying the ICMP responses and with the (for me ...
-1
votes
2answers
100 views
OpenDNS automatic diagnostics
I've contacted OpenDNS support because advertising is not filtered on this site http://www.backpackerboard.co.nz/
They asked me to read these manual instructions OpenDNS Diagnostic Tool: What to ...
4
votes
2answers
6k views
Script to Ping an IP and create a log showing date/time of any fails, times over 500ms, and traceroute any fails [closed]
I am trying to make a script to run constantly that produces a log showing ping stats. I want the log to contain and ping fails, times over 500ms and the traceroute of any timeouts. Here my script:
#!...
0
votes
1answer
33 views
Traceroute to just one domain
Traceroute showing all *** for ONLY ONE DOMAIN. Why? Server has checked to see if it my IP is blocked and it is not. I manage the site and none of it works, email, FTP, cpanel, website, NADA.
What ...
2
votes
0answers
2k views
Why is my traceroute hitting the wrong gateway?
What "Should" Happen
I want traffic to Google to go through en0 (Mac) and hit gateway A (let's say IP = 123.456.789.000). I have another route setup for en3 and I don't want to mess with that.
Tried:
...
15
votes
3answers
18k views
How to get traceroute on cygwin?
The implementation of traceroute(tracert) differs on Windows and Unix. I wanted to compare both with Wireshark. I am on Windows 7 now and I wanted to get Unix traceroute implementation quickly.
My ...
1
vote
1answer
9k views
Can I do reverse traceroute?
Is it possible to do reverse traceroute ?
This is very important for me to know, Why the websites are loading slow for my clients in certain area ?
I have explained my problem here: (why i need ...
1
vote
2answers
1k views
traceroute / mtr from multiple locations, How can we do it ? (Or alternate way)
I have a website, recently due to some network issue, Most of my customers are reporting slow loading time of my website.
When I reported this to my DataCenter, they are asking me to send the ping / ...
0
votes
0answers
468 views
Why tracepath and chrome use different gateway
System: Archlinux latest
Softerware: NetworkManager
My route table
Destination Gateway Genmask Flags Metric Ref Use Iface
default 10.3.0.9 0.0.0.0 UG ...
1
vote
1answer
529 views
iptables - masqueraded NAT has delayed first hop in traceroute
I'm just in the process of setting up my Linux (Debian-based) router with a PPPoE connection via an ADSL/PPPoA -> PPPoE bridge. The connection works perfectly on the router itself but a traceroute ...
5
votes
1answer
18k views
channel 1: open failed: administratively prohibited: open failed [duplicate]
I am trying to set up an SSH tunnel (on a Raspberry Pi) with the following command: ssh user@terbank.cs.kuleuven.be -L 5672:tabor.cs.kotnet.leuven.be:5672 -N (I should note that I can, or at least ...
22
votes
2answers
60k views
How to make traceroute trace beyond 30 hops?
Some of the servers I use traceroute on, are more than 30 hops away. How do I make traceroute trace beyond 30 hops?
1
vote
2answers
292 views
How to estimate server's network connection quality with traceroute?
I need to estimate network connectivity of various dedicated server hosting providers, e.g. how fast and uniform will my services perform when hosted there. I use traceroute command on my home ...
