Most IT pros know that using Telnet to manage routers, switches, and firewalls is not exactly a security best practice. Instead, the accepted alternative to Telnet's lack of security is Secure Shell ...

Most IT pros realize that using Telnet to manage routers, switches, and firewalls is insecure. Transmitted in clear text across a network, Telnet traffic basically publicizes any login usernames and ...

All Cisco routers have two special types of lines, and many Cisco routers have a third. What are these lines, and how do you configure them? These are things that every network admin should know.

Two of the most common forms of network address translation (NAT) are dynamic port address translation (PAT) and static NAT. PAT is the many-to-one form of NAT implemented in many small office and ...

A Cisco router can help to simplify your business networking setup, providing a stable and secure link between your local area network and the Internet. In addition to serving as a basic gateway to ...

Previous articles (Part one, Part two) in this series on implementing VPN gateways using Cisco routers discussed the IPsec protocol and basic IPsec VPN connection models. Now we'll learn how to ...

When a Cisco router is initially configured, the router's DNS lookup function is enabled by default. This function is only useful if the router utilizes a DNS server on the network; otherwise, it will ...