When you use IPTables to create a firewall for your company's Web server, one way to prevent certain users from accessing the server is to block their IP addresses. Use the "iptables" command to ...

I'm currently using a WRT54G router with Tomato firmware and I have a simple residential dynamic ip address cable modem. The cable modem is in "bridged" mode and the router is set to use DHCP to get ...

We just got a new Juniper SSG-140 firewall. I've never worked with these things before. My experience is with Cisco and, to some extent, Sonicwall, so you'll have to bear with me as I am still ...

While blocking IP ranges work perfectly, blocking a website or domain is tricky. That’s because there can be a multiple IP attached to the domain, and while you can prevent them, the DNS resolver can ...

In a wide-area network that uses the static IP addressing method, a computer may have multiple static IP addresses to identify it across all the sub-domains of the wide-area network. Large ...