Networking :: How To Read A Traceroute Readout
Jan 8, 2011how to read a Traceroute readout.
View 14 Replieshow to read a Traceroute readout.
View 14 RepliesIf I traceroute to google, it hits my router and stops there. Generically, my Setup is this. AT&T Uverse residential gateway ---> wired to 54g router running tomato ---> wireless ethernet bridge to 54gl router running tomato in another room ---> wired to ubuntu and win7 box.
The ATT RG hands its external IP over the the 54g running tomato. the 54gl running tomato is a wireless ethernet bride in the den running the same with 2 machines wired to. The two machines are static IP to the first router, which does all DCHP, stuff like that. The Windows box is fine. The subnets are the same. What should I be looking at to figure this out? This is the only "network" issue I have come across.
Why linux traceroute uses UDP protocol, we have basic ICMP protocol which is used in MS-windows tracert.Any specific use of traceroute using with UDP,TCP than ICMP?Windows is displaying all HOPs address but linux printing *.*.*
View 8 Replies View RelatedI am trying to traceroute to google.com
When i do it looks like this
Code:
It does this no matter what site I go to. also the 192.168.16.10 is the untangle server
The command does work for local Ips
Code:
When I try traceroute it only gives me stars as output. For example:
Code:
me@desk:/etc/udev/rules.d$ traceroute taobao.com
traceroute to taobao.com (121.14.24.241), 30 hops max, 60 byte packets[code]....
It gives me some output when tracerouting to other computers within my network:
As i've installed the new fedora update packets ,i've seemed to develope a strange networking problem .. Network description Fedora 15 with 3 LAN adaptors eth0 > LAN (IP address 192.168.0.254)eth1 > network connected to a pppoe conection eth2 > WAN to another provider. Ok so let's ignore eth2 because i've disable mangle(i was using trafic shifting on some ports). So now i'm using it as a simple NAT server .. so the problem is : >>my server is not responding to the traceroute command is it should .. the network works thou but this is what i get. C:UsersDUAL>tracert google.ro
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I've used linuxquestions.org from time to time, but never needed to register until now.An in-depth explanation of this issue is already described over here: [URL], so I will merely quote it again here - it seems nobody knows the solution over at Ubuntu's forums...:
Quote: I recently switched my home server from debian lenny to ubuntu maverick. I've managed to port all my configs and stuff and so far I'm very happy. There's one tiny thing that's griping me, that I never experienced before with debian's (older) packages/configuration... Here's the situation: My server dials up 2 pppoe (adsl) interfaces (different isp's) with split internet routes.
If I run a general traceroute to an internet IP, all the hops which are not routed via the same interface as the destination host/IP, will appear as "* * *" in the traceroute. This was never the case before and it would be preferred to see the IP's of all routers along the way regardless of whether they are routed... (I used to be able to see IP's like 10.0.0.x before through INTERNET traceroutes if they were hops along the way [IP's which would be unreachable if traced directly], and that's no longer the case) - isn't this kinda defeating the point of traceroute?
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when one core is high, the other is low. It's almost an exact mirror effect right in the middle of the graph. What's up with this?
View 2 Replies View Relatedjust done a update and something drastic has gone wrong i think the video card driver has been messed up as when i try to boot i get as far as the purple ubuntu screen with the 5 dots, but then nothing if i press a key i get a screen full of readout the most pertinent, i think, is
gnome desktop manager.........[fail]
and also something like
gdn recovery ......[fail]
i assumed that i could reinstall driver while booting from live cd, but this hasn't worked
how I run a traceroute on 11.04?
View 7 Replies View Relatednaman@naman-laptop:~$ traceroute google.co.in
google.co.in: Name or service not known
Cannot handle "host" cmdline arg `google.co.in' on position 1 (argc 1)
Then I tracked the IP address of google.com on [URL] and tried
naman@naman-laptop:~$ traceroute 74.125.77.99
traceroute to 74.125.77.99 (74.125.77.99), 30 hops max, 40 byte packets
connect: Network is unreachable
I have to use my college proxy server to connect to the Internet. When I traceroute to a host within the LAN there is no problem. What should I do to be able to traceroute to a host outside my local network?
what the difference between the commands tracert and traceroute is? I need to run tracert as superuser, while traceroute is no problem in user mode.
Also, it appers like tracert is showing nodes completely different from traceroute:
Code:
sudo tracert google.nl
traceroute to google.nl (216.239.59.104), 30 hops max, 60 byte packets
1 192.168.1.254 (192.168.1.254) 1.078 ms 1.699 ms *
2 * * *
[Code]....
Another thing.. Is it correct to assume that hop 5 and 7 above are loadbalanced nodes? How should I interpret this result, is the traceroute initiating it's path three times? Otherwise it'd be rather strange as to display other addresses in the same node..
As root I get the following result: ngssuse:~ # traceroute -nI 10.200.123.45
Note: the -i and -I options were exchangedfor compability with LBL traceroute Use -I for ICMP, and -i <ifname> to specify the interface name unable to create ICMP send socket: Permission denied. Is this a bug?
Is there some traceroute-like tool that shows ports as well as IP addresses? This is more for seeing how NAT works (on my home network) than for a practical need.
View 5 Replies View RelatedI am a new learner. I need a simple scripts that compute the average ping time for hosts, and the average number of hosts that respond to pings during a traceroute. I have finished the ping part but I confused how to start the traceroute part
Code:
#!/bin/bash
#!/bin/sh
txt=$*
count=0;
for host in $txt; do
echo $host
echo $( ping -c 3 $host | grep avg | sed 's@.*=@ rrt ave =@' | sed -r 's@ = [^/]+/([^/]+).*@= 1 ms@')
done;
I'm trying to use traceroute to view hop count between my machine and a specified external host but no matter what I give to it, it provides me the same output:
[Code]...
What am I doing wrong? Should I be disabling DNS caching? Is there a property I haven't set correctly? Just a small FYI, but I dual boot this computer with Win7 and it's tracert works fine. UPDATE: I also ran the command from a different network and it worked fine. I'm assuming I need a port forward then?
I ran two scans in Zenmap: 1) Quick scan plus and 2) Quick Traceroute. Quick scan plus, under the Nmap Output tab, has a field called "Network Distance". The Quick Traceroute report under the same tab lists the HOP and RTT time. I was thinking that for a given server, the value for the Network Distance would be the same as the HOP field when initiating the scans from the same server, but they are not.
View 5 Replies View RelatedCode: # traceroute -I 69.12.32.2 Note: the -i and -I options were exchangedfor compability with LBL traceroute Use -I for ICMP, and -i <ifname> to specify the interface name unable to create ICMP send socket: Permission denied Note that the command was done as root. This worked in 11.3.
And yes, it works without the "-I". But it should work with the "-I". One shouldn't have to boot into Windows, just to run "tracert" there.
I want to give access to a student to a server in order to make repeated trials of traceroute to different hosts. We have realized that it is preferable to use the -T option, as it sends TCP packets that are less commonly blocked by firewalls. However, this option is only available to superusers, and I don't want to grant the student such privileges.
View 2 Replies View RelatedIve managed to install samba, I've shared a folder. I can access from a Windows 7 machine via \ubuntupublic. I can put files in the folder form the ubuntu machine and edit them on the windows box. I can put files in the folder/share from the Windows box but then I cannot edit them on the Ubuntu machine (they are read only and have a "Lock" over them). I can fix this by going to the properties of the file/folder in Windows and manually assigning "Everybody" full control (then the lock disappears and all is well.) I want read/write access to all the folders contents from both machines all the time (security is NOT a concern I WANT the permissions wide open) what am I doing wrong?
View 7 Replies View Relatedwhen i am using traceroute command, it is giving the erro as follow: traceroute [URL]: Temporary failure in name resolution Cannot handle "host" cmdline arg [URL] on position 1 (argc 1)
View 2 Replies View RelatedI have noticed this now for the 125 time that when you mount a volume and use mount to see if it is ro or rw, it says rw, but actually is read only.
Why is mount reporting it wrong?
systema3:/vol/mysql_vo2 on /mnt/mysql2 type nfs (rw,addr=192.168.10.82)
vs
failed to change ownership of `/mnt/mysql2/.snapshot/hourly.5/v240-2-bin.058' to mysql:mysql
chown: changing ownership of `/mnt/mysql2/.snapshot/hourly.5': Read-only file system
Ubuntu main O/S windows 7 running in Virtualbox how or can i read a usb flash drive in the windows O/S i want to read my mp3 player
View 4 Replies View RelatedI want my samba to keep my windows attributes exactly what the user setted in windows I mean if it has read only file in win box and copy it to samba share ,samba keep it read only and same for other attributes but it does not do it now with my configuration:Quote:
[global]
workgroup = DOMAIN
server string = File Server
[code]...
After 3 days and 2 gallons of sweat and 9 billion forums read I give up, I cannot figure out why Ubuntu 9.10 does not read my wireless card. I have a Lenovo G555, I followed most of the instructions the forums provided online such as ndiswrapper and finding the inf. file within windows, copying it to your usb and than putting it into ubuntu to later use windows wireless drivers to install the driver just to run into a bcmwl6 Invalid Driver! I tried to use terminal with no sucess. Can someone just please give the straight forward how to make this work answer.
View 1 Replies View RelatedIm reading this tutorial that is old(kernel 2.4) for iptables. It states that iptables should not be read at the application level of the TCP model because of packet boundaries. Does this still hold true today?
View 1 Replies View Relatedeth1 which is connected to interneteth2 internal networkbecause the server is part of a complicate network i need to setup the routing tables for eth1 and eth2but i need that the default 0.0.0.0 must be read from eth1 while i dont know why the server first read the one on eth2. this creates big problem to me.if i add the default route to eth1 i get an error saying that the default route already exist (i suppose is the one on eth2)how i can solve this ? i must create a script that first delete the default from eth2 and after add it to eth1
View 1 Replies View RelatedWe have a network with several computer. We have two file servers (don't ask why) an Ubuntu and an XP as well as many clients. Setting shares on Ubuntu was easy and all clients can see them read and write. but I can't get the Ubuntu clients to see the SMB shares on the XP properly. This is my fstab:
Code:
//192.168.0.100/resources /media/resources smbfs iocharset=utf8,credentials=/home/boss/.smbcredentials,dmask=775,gid=1009 0 0
//192.168.0.9/summer /media/summer smbfs iocharset=utf8,credentials=/home/boss/.smbcredentials1,dmask=775,gid=1009 0 0
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I am trying ti set up a NFS server using the guide on [URL] However, the NFS mounts on the client side as a read-only file system, so I cannot modify nothing. Here is my /etc/export file on the server side:
Code:
/home/acrocephalus/ 192.168.1.35 (rw,async,no_root_squash)
and this is my /etc/fstab file relevant line on the client side
Code:
192.168.1.33:/home/acrocephalus/ /home/acrocephalus/AcrocephalusServer/ nfs rsize=8192,wsize=8192,timeo=14,intr
Then, I mount the system using the command
Code:
sudo mount /home/acrocephalus/AcrocephalusServer/
.
how to mount the NFS with full read-write permissions?
Installed apache2 and php5, got the message "It works!" and phpinfo() displays the info page from withing the my folder. But when i put my index.php and rest of the files in www/mysite/ I only get a blank page displaying nothing, as if my php scripts wont parse. If I create a plain html "hello world" doc it displays that.. I've used this guide before [URL] and got it to work last time some months ago, but this time around after clean ubuntu reinstall it's showing nothing, remember I struggled with some permission things last time doing sudo chmod a+rwx /var/www/* and same for subfolders css and images. but now nothing happens, no errors or nothing. I didnt have to do enything else last time, no php.ini or nothing, it just worked, after I set permissions to get css and images to display correctly. Tried to put my files in www alone but dont work either (also cannot delete the default index.html in the www folder). Tried to restart apache2 and the computer, but no luck. My site also works online from other servers, so this is a local problem.
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