Hello,
When I conduct a network speed test from the following location
http://www.timewarnerla.com/speedtest/speedtest.asp with firewall started I
get no more than 1 Mbps at best, while without one I get 4 Mbps.
I have a RCA DCM325 cable modem from RoadRunner.
I''m using Shorewall 2.2.0-Beta3.
My OS is SuSe 9.1 kernel 2.6.5-7.111.5-default running on Dell PowerEdge 400SC
with 2.0 MHz CPU, 256 MB RAM, 40 GB hard drive.
My network uses 100 MB/sec switches only.
This machine has an Intel gigabit interface built-in. If I set it to MTU 8192,
than I get 4 Mbps. I found out that an interface with 100 MB/sec cannot be set
to more than 1500 MTU.
My rule set is not that big. Counting rules like this iptables -L -n | grep -c
"/" returns 219. I do not have burst rate set either.
I''ve tried using the built-in SuSe firewall, but got the same speed
issue.
I''ve tried other slower machines with more RAM, but got the same issue.
When I plugin any Windows machine directly into the cable modem, then I get 4
Mbps on 100 MB/sec interface.
Any ideas would be greatly appreciated.
Thank you in advance,
Alex.