ZyXEL ZyWALL 5 User Guide - Page 294

Chapter 14 Intrusion Detection and Prevention (IDP) Screens Figure 174 SECURITY > IDP > Backup & Restore To back up IDP signatures, click Backup and then choose a location and filename for the IDP configuration set. To restore previously saved IDP signatures, type in the location where the previously saved file resides on your computer or click Browse ... to find it, then click Upload. To revert to the factory-default signature (Active, Log, Alert and/or Action) settings, click Reset. 14.7 Technical Reference This technical reference contains the following sections: • Firewalls and Intrusions • IDS and IDP • Host IDP • Network IDP • Example Intrusions Firewalls and Intrusions Firewalls are designed to block clearly suspicious traffic and forward other traffic through. Many exploits take advantage of weaknesses in the protocols that are allowed through the firewall, so that once an inside server has been compromised it can be used as a backdoor to launch attacks on other servers. Firewalls are usually deployed at the network edge. However, many attacks (inadvertently) are launched from within an organization. Virtual private networks (VPN), removable storage devices and wireless networks may all provide access to the internal network without going through the firewall. 294 ZyWALL 5/35/70 Series User's Guide