Cisco router firewall security
Let's configure the basic IOS Firewall traffic inspection and filtering. Please note that you should configure this first on a test system with test traffic — an improperly configured firewall can halt all network communications. You would use these inspection rules:. Of course, the best way to really test your firewall is to perform a port scan from the outside or Internet, in this case.
The IOS Firewall is a very powerful feature that may already be available on your router. While this may not be a solution for Internet protection at very large enterprises, the IOS firewall is an excellent firewall for small and midsize businesses. Want to learn more about router and switch management? Automatically sign up for our free Cisco Routers and Switches newsletter , delivered each Friday! Editor's Picks. Python is eating the world: How one developer's side project became the hottest programming language on the planet.
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