ICMP checksum is wrong?

[dragoncity99]

Hi guys,

     Do u all have any idea what's wrong with my computer network. When i ping a website, data loss will occur occasionally.
 
    "ping www.yahoo.com"

     If i do traceroute command, "traceroute www.yahoo.com", i will get loads of error message like this:

[root@cyberjaya root]# traceroute www.google.com
traceroute: Warning: www.google.com has multiple addresses; using 66.102.7.99
traceroute to www.google.akadns.net (66.102.7.99), 30 hops max, 38 byte packets
 1  219.93.239.253 (219.93.239.253)  0.512 ms  0.468 ms  0.362 ms
Icmp checksum is wrong
 2  219.93.218.176 (219.93.218.176)  17.877 msIcmp checksum is wrong
  18.169 msIcmp checksum is wrong
  13.952 ms
Icmp checksum is wrong
 3  219.93.218.193 (219.93.218.193)  11.611 msIcmp checksum is wrong
  9.812 msIcmp checksum is wrong
  11.351 ms
Icmp checksum is wrong
 4  210.187.142.5 (210.187.142.5)  10.856 msIcmp checksum is wrong
  11.728 msIcmp checksum is wrong
  11.070 ms
Icmp checksum is wrong
 5  klj-odsy02-srp1-0.tm.net.my (210.187.135.14)  10.985 msIcmp checksum is wrong
  10.844 msIcmp checksum is wrong
  11.197 ms
Icmp checksum is wrong
 6  210.187.133.83 (210.187.133.83)  11.356 msIcmp checksum is wrong
  11.587 msIcmp checksum is wrong
  11.103 ms
Icmp checksum is wrong
 7  219.93.174.82 (219.93.174.82)  10.875 msIcmp checksum is wrong
  12.344 msIcmp checksum is wrong
  10.747 ms
Icmp checksum is wrong
 8  219.93.155.66 (219.93.155.66)  240.940 msIcmp checksum is wrong
  242.210 msIcmp checksum is wrong
  240.435 ms
Icmp checksum is wrong
 9  if-2-1.core2.PaloAlto.Teleglobe.net (64.86.84.129)  240.936 msIcmp checksum is wrong
  241.815 msIcmp checksum is wrong
  240.187 ms
Icmp checksum is wrong
10  ix-1-2.core2.PaloAlto.Teleglobe.net (64.86.84.142)  220.202 msIcmp checksum is wrong
  220.055 msIcmp checksum is wrong
  221.199 ms
Icmp checksum is wrong
11  216.239.48.246 (216.239.48.246)  220.947 msIcmp checksum is wrong
  221.305 msIcmp checksum is wrong
  221.696 ms
Icmp checksum is wrong
12  64.233.174.57 (64.233.174.57)  219.952 msIcmp checksum is wrong
  222.554 msIcmp checksum is wrong
  220.324 ms
Icmp checksum is wrong
13  216.239.49.150 (216.239.49.150)  230.570 msIcmp checksum is wrong
  232.056 msIcmp checksum is wrong
  231.189 ms
 

Besides that, when i try to download large files, such as a 70MB file, it will stop halfway and stop responding onwards from here, i even tried to pause and resume again. The same thing goes to SSH, where in the middle of the connection, the connection will be lost and my terminal will stop responding to my key presses.

I'm currently using Fedora as a proxy server (Squid).
Oh my goodness, it gives me a big headache.

[Ricky]

First tell me that how u are able to ping behind squid. ? did u compiled the squid using --enable-icmp  !!

[dragoncity99]

No, actually i block icmp. I ping using by "ssh" to the squid server.
The only i ping to the outside world.

Alternatively, i will ping using the squid server as well. For your information the squid server acts as a firewall, and internet gateway as well.

[Ricky]

Hi.. dragoncity.. so problem still persisting or you found some solution !

[aktiwari4u]

probabbly some data conjection over network that will also cause packet drop some time so batter chek that also