Re: Network Performance Issues.
On Saturday 14 April 2007 15:02, Alan Chandler wrote:
> The problem I have is this. I have a linux desktop (machine D) siting
> on a LAN in my home. This is connected to a linux firewall/nat router
> (machine S) with two ethernet cards. One links out to the internet,
> the other connects to the internal lan. Connections to the internet
> from machine D go through machine S, which acts as a NAT translation. I
> do all the control and firewalling using IPTABLES in machine S.
>
> Downloading a video from youtube onto Machine D's desktop I get a
> download speed of about 7Kbytes/sec. Which is very low. If I try to
> download the same one by ssh'ing into mahcine S and running wget on the
> same url, I get a download speed of 80Kbytes/sec (ie more than 10 times
> faster).
Alan,
I would try wget on machine D to verify that the problem is network
rather than your browser on D. If that doesn't answer your question
I would run wireshark (or tshark from the command line) for a few
seconds while machine D was downloading via S, being sure to capture
on all interfaces. The result will show what is happening to packets
trying to cross S.
--Mike Bird
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