ZyXEL FSG2200HNU User Guide - Page 174
Firewall Technical Reference, 12.3.1 Guidelines For Enhancing Security With Your Firewall
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Chapter 12 Firewall Table 53 Security > Firewall > Services LABEL DESCRIPTION Add Click this to add the selected service in Available Services to the Blocked Services list. Note that the service is blocked immediately after clicking this. Delete Select a service in the Blocked Services, and click this to remove the service from the list. Clear All Click this to remove all the services in the Blocked Services list. Apply Click this to enable LAN-to-WAN services blocking. Reset Click this to set every field in this screen to its last-saved value. 12.3 Firewall Technical Reference This section provides some technical background information about the topics covered in this chapter. 12.3.1 Guidelines For Enhancing Security With Your Firewall 1 Change the default password using the web configurator. 2 Think about access control before you connect to the network in any way. 3 Limit who can access your ZyXEL Device by making sure only authorized persons know the login credentials. 4 Don't enable any local service (such as telnet or FTP) that you don't use. Any enabled service could present a potential security risk. A determined hacker might be able to find creative ways to misuse the enabled services to access the ZyXEL Device or the network. 5 Keep the ZyXEL Device in a secured (locked) room. 12.3.2 Security Considerations Note: Incorrectly configuring the firewall may block valid access or introduce security risks to the ZyXEL Device and your protected network. Use caution when creating or deleting firewall rules and test your rules after you configure them. Consider these security ramifications before creating a rule: 1 Does this rule stop LAN users from accessing critical resources on the Internet? For example, if IRC is blocked, are there users that require this service? 174 FSG2200HNU User's Guide