Cisco SRP521W-K9-G1 Administration Guide - Page 76

Configuring the Network Firewall STEP 4 Click Submit to save your settings. 5 Firewall Filter Settings Field Description SPI Firewall Protection To enable a firewall protection, select Enabled. The default is Enabled. Internet Filter Options Filter Anonymous Internet Requests Prevents your network from being "pinged" or detected by other Internet users. It also hides your network ports. Both make it more difficult for outside users to enter your network. This filter is enabled by default. Select Disabled to allow anonymous Internet requests. Filter Internet NAT Redirection This feature prevents local clients from accessing local services through active port forwarding rules (i.e. local clients cannot use the router's public IP address to access local services, as they might if they were connected through the Internet). This feature does not prevent a local client from accessing a local service directly by using private addressing. This filter is disabled by default. Select Enabled to filter Internet NAT redirection, or Disabled to disable it. Filter IDENT (Port 113) Prevents port 113 from being scanned by devices outside of your local network. This filter is enabled by default. Select Enabled to filter port 113, or Disabled to disable it. Filter DoS Attack Protects the SRP from Denial-of-Service attacks. Web Filter Settings Proxy Use of WAN proxy servers can compromise your network security. Enabling the proxy filter blocks access to any WAN proxy servers. To enable proxy filtering, check the box. This filter is disabled by default. Cisco SRP500 Series Services Ready Platforms Administration Guide (SRP520 Models) 76