Traffic through firewall is extremely slow

P

plasma

Gawd
Joined
Apr 6, 2004
Messages
647
I was wondering if anyone has ever seen a hardware firewall die slowly? I saw one recently that was passing http traffic extremely slow. I checked every rule, setting etc.. tried changing, adding, removing etc.. but nothing seemed to make any difference. It almost seemed like the firewall was running very slow as in dieing or something, but still operating just extremely slow:confused: Nothing was changed and one day http traffic just came to a crawl. The modem and service is fine, its when passed through the firewall. Almost seemed like the firewall had spyware running, was overloaded or low on memory, cpu power etc.
 
What specific firewall are you using? Are there any performance monitoring options? I have seen routers/firewalls become real slow after an interface started the fail. You could put a tap/sniffer on the links to see if you are getting bad data.
 
Its a sonic, and I have tried adjusting just about everything turning logging off, non of the antivirus/spy stuff is on. I did tweak the mtu which seemed to help some but its still slow and intermittently doesn't seem to work at all:confused:
 
When my BEFSR41 died traffic would take forever to get through and would disconnect/timeout often.
 
Is there anyway you could throw another firewall in where the Sonic currently sits? My best guess right now is you have an interface that has gone bad.
 
Can you check the ethernet error counters on the firewall? Failing that, on a device connected to the firewall? If there are a lot of errors, this points to it being a problem with the eth iface.
 
it ended up being a DNS issue; because I manually set new DNS addresses and now it flys
 
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