We've been experiencing slow internet connection lately, when I checked our utilization using the MRTG, I noticed that we're taking so much of our bandwidth on outbound connections. This is weird because yesterday is a non working holiday here and we still experienced the same thing. There are some things that I suspect have caused the problem: Maybe there's a problem with our ISP, or somebody is using our connection without us knowing, maybe holes in our configuration which I would like to check. In this regard, may I ask what are the things that I should look for and check for in our system? How can I tighten up our proxy/firewall? We're just using ISA as our firewall? Hope you can help me folks! Thanks a lot!