A firewall is a piece of software that controls what connections can be made to and from a network.

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Windows 7 is blocking ports

I am trying to open port 80 and 3690 for HTTP and svnserve respectively (inbound for both). I have Windows Firewall off, and have tried temporarily disabling Mcafee VirusScan Enterprise, to no avail. ...
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IPtables keeps resetting rules and blocking almost everything

Every time I reset IPtables, the rules keep coming back in about 10 minutes, blocking everything besides port 22 and 80. When I do a "iptables-save", I see this I can't find out where it's coming ...
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Would a switch be covered by a router's firewall

I need more Ethernet ports on my home network. Sadly, we already have an old router connected to the main router and we still need more ports. Would the devices connected to the switch be ...
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Is the any way other then ping to detect internet connection?

I have a rails server (Linux). I can open the site with machine A. Using machine B I just can use ssh port to connect it, but it cannot open the site and the rails server cannot detect the http ...
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How can I connect to a VPN with a restrictive network?

I have recently relocated and the network I have been provided blocks every outgoing TCP port except for 80 (http) 443 (https) 465 (smtps?) 587 (submission) 993 ...
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Changing the ports a program uses

This question might not even make sense. I have a very limited understanding of how networking protocols work. My phrasing of these questions might be very poor. My school has a firewall enabled. ...
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How can I protect a PC that is directly connected to the Internet?

How can I protect a PC that will be directly connected to the Internet? There won't be a router — with it's semi-protective NAT — between my PC and any script kiddie on the Internet. What ...
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how do i set up this firewall?

i use fedora 13, and i have firewall turned off now. but i want to allow all incoming connections and outgoing connections except to a port P. i want to allow connection to port P only from certain ...