ZyXEL LTE7485-S905 User Guide - Page 129

Firewall, connect to computers with running FTP servers.

Page 129 highlights

Chapter 11 Firewall 1 Does this rule stop LAN users from accessing critical resources on the Internet? For example, if IRC (Internet Relay Chat) is blocked, are there users that require this service? 2 Is it possible to modify the rule to be more specific? For example, if IRC is blocked for all users, will a rule that blocks just certain users be more effective? 3 Does a rule that allows Internet users access to resources on the LAN create a security vulnerability? For example, if FTP ports (TCP 20, 21) are allowed from the Internet to the LAN, Internet users may be able to connect to computers with running FTP servers. 4 Does this rule conflict with any existing rules? Once these questions have been answered, adding rules is simply a matter of entering the information into the correct fields in the Web Configurator screens. LTE Series User's Guide 129

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Chapter 11 Firewall
LTE Series User’s Guide
129
1
Does this rule stop LAN users from accessing critical resources on the Internet? For example, if IRC
(Internet Relay Chat) is blocked, are there users that require this service?
2
Is it possible to modify the rule to be more specific? For example, if IRC is blocked for all users, will a rule
that blocks just certain users be more effective?
3
Does a rule that allows Internet users access to resources on the LAN create a security vulnerability? For
example, if FTP ports (TCP 20, 21) are allowed from the Internet to the LAN, Internet users may be able to
connect to computers with running FTP servers.
4
Does this rule conflict with any existing rules?
Once these questions have been answered, adding rules is simply a matter of entering the information
into the correct fields in the Web Configurator screens.