When it comes to network security, one important aspect that you should be focusing on is filtering IP addresses. This is where a router IP filter list comes in handy. Simply put, an IP filter list is a set of rules that identifies which IP addresses are allowed or blocked from accessing your network.
The router IP filter list can be configured to either allow or deny access based on the IP address, subnet mask, or range of IP addresses. For instance, if you’re running a business and only want employees to access certain sites, you can set up a rule that blocks all IP addresses outside your company’s network.
Another use of an IP filter list is to prevent cyber attackers from accessing your network. You can create rules that block known IP addresses associated with malicious activity, such as phishing, hacking, or DDoS attacks.
It’s also worth noting that a router IP filter list is not a foolproof solution. Hackers can spoof their IP address or use proxies to bypass these filters. However, having an IP filter list in place can make it more difficult for attackers to gain access to your network.
Cisco and other leading networking companies offer products and services that support IP filtering. These devices provide administrators with customizable options for configuring IP filter lists, including setting up exceptions to allow certain IP addresses that would otherwise be blocked.