Watchguard Firebox X20E User Manual page 9

Configuring the POP3 Proxy
Setting access control options ..............................................................................117
Setting proxy limits ..............................................................................................117
Filtering email content .........................................................................................119
Using the SMTP Proxy
Configuring the SMTP Proxy
Setting access control options ..............................................................................121
Setting proxy limits ..............................................................................................121
Deny Message ....................................................................................................122
Filtering email by address pattern .........................................................................123
Filtering email content .........................................................................................123
Adding a Custom Proxy Policy
Adding a custom SMTP proxy policy .....................................................................126
Using Additional Services for Proxies
Gateway AntiVirus/Intrusion Prevention Service ....................................................126
WebBlocker ........................................................................................................126
spamBlocker .......................................................................................................126
9 Intrusion Prevention
Adding a Site to the Permanent Blocked Sites List
Blocking Sites Temporarily
Blocking Ports
Avoiding problems with blocked ports ...................................................................130
Adding a port to the blocked ports list ...................................................................130
Preventing Denial-of-Service Attacks
Dropping Flood Attacks .......................................................................................131
Distributed Denial-of-Service Prevention ...............................................................132
Configuring Firewall Options
10 Traffic Management
About Network Traffic
Causes for slow network traffic .............................................................................135
Traffic Categories
Interactive traffic ..................................................................................................136
High priority ........................................................................................................136
Medium priority ...................................................................................................136
Low priority .........................................................................................................136
Traffic Marking
Configuring Traffic Control
Enabling traffic control .........................................................................................139
Adding a traffic control filter ..................................................................................140
Editing a traffic control filter ..................................................................................141
Changing the priority of a traffic control filter ..........................................................142
Removing a traffic control filter .............................................................................142
Working with Firewall NAT
NAT types ...........................................................................................................142
NAT behavior ......................................................................................................143
Secondary IP addresses ......................................................................................143
Using 1-to-1 NAT .................................................................................................143
User Guide
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