Linksys WRVS4400N Manual page 17

IPS is an advanced technology to protect your network from malicious attacks. IPS works together with
your SPI Firewall, IP Based Access List (IP ACL), Network Address Port Translation (NAPT), and Virtual
Private Network (VPN) to achieve the highest amount of securities.
IPS works by providing real-time detection and prevention as an in-line module in a router. The Wireless-N
Security Router has hardware-based acceleration for real-time pattern matching for malicious attacks. It
actively filters and drops malicious TCP/UDP/ICMP/IGMP packets and can reset TCP connections. This
protects your client PCs and servers running various operating systems including Windows, Linux, and
Solaris from network worm attacks. However, this system does not prevent viruses attached emails.
The signature file is the heart of the IPS system. It is similar to the Virus definition files on your PC's
Anti-Virus programs. IPS uses this file to match against packets coming in to the Router and performs
actions accordingly. As of today, the Wireless-N Router is shipped with signature file version 1.1.4 and
with a total of 1048 rules. The rules cover the following categories: DDoS, Buffer Overflow, Access
Control, Scan, Trojan Horse, Misc., P2P, IM, Virus, Worm, and Web Attacks.
Customers are encouraged to update their IPS signature file regularly to prevent any new type of attacks
on the Internet.