Firewalls have become the Internet equivalent of a condom. “Don’t have hex without a firewall!” is the mantra for every security issue, from keeping out crackers to minimizing the threat of Melissa.

My copy of Zone Alarm (personal firewall) recently put up an alarm that said XXX.XXX IP address is trying to FTP into this port and that it had denied access to it. When I checked my open ports by ...

In case your router blocks the random port used by Skype to receive incoming connections, you must manually forward ports 80 and 443, allowing Skype to connect to other clients via TCP. All newer ...

I just started messing with QoS my new DD-WRT router. I see that you can set bittorrent to a lower priority, but since I set my bittorrent to go to a random port every time I start uTorrent, how will ...

In the cybersecurity world, testing for the existence of exploitable vulnerabilities isn’t always an exact science. Checking for open ports (CIS Control 9 - Limitation and Control of Network Ports, ...

When it comes down to it, IPv4 port forwarding really only exists because NAT exists. IPv6 removes the need for NAT entirely in a home lab situation, which changes the problem in an important way: ...