Configuring the DNS Proxy Service
User Guide
155
GET www.mydomain.com / HTTP/1.1
The proxy server then forwards this request to the Web
server mentioned in the GET request.
To set up an external caching proxy server:
1
Configure an external proxy server, such as Microsoft
Proxy Server 2.0.
2
Open Policy Manager with your current configuration.
3
Double-click the icon for your HTTP proxy service.
This can be either Proxy, HTTP, or Proxied-HTTP.
4
Click the
Properties
tab. Click the
Settings
button.
5
Select the checkbox marked
Use Caching Proxy Server
.
6
In the fields below the checkbox, enter the IP address
and TCP port of the caching proxy server. Click
OK
.
7
Save this configuration to the Firebox.
Configuring the DNS Proxy Service
Internet domain names (such as WatchGuard.com) are
located and translated into IP addresses by the domain
name system (DNS). DNS lets users navigate the Internet
with easy-to-remember “dot-com” names by seamlessly
translating the domain name into an IP address that serv-
ers, routers, and individual computers understand. Rather
than try to maintain a centralized list of domain names and
corresponding IP addresses, smaller lists are distributed
across the Internet.
The Berkeley Internet Name Domain (BIND) is a widely
used implementation of DNS. Some versions of BIND can
be vulnerable to attacks that cause a buffer overflow, which
crash the targeted server and enable the attacker to gain
unauthorized access to your network.
One attack uses a flaw in the transaction signature (TSIG)
handling code. When BIND encounters a request with a
Summary of Contents for Firebox X10E
Page 1: ...WatchGuard Firebox System User Guide WatchGuard Firebox System ...
Page 12: ...xii WatchGuard Firebox System ...
Page 44: ...Chapter 2 Service and Support 22 WatchGuard Firebox System ...
Page 61: ...Cabling the Firebox User Guide 39 ...
Page 68: ...Chapter 3 Getting Started 46 WatchGuard Firebox System ...
Page 78: ...Chapter 4 Firebox Basics 56 WatchGuard Firebox System ...
Page 156: ...Chapter 8 Configuring Filtered Services 134 WatchGuard Firebox System ...
Page 182: ...Chapter 9 Configuring Proxied Services 160 WatchGuard Firebox System ...
Page 220: ...Chapter 11 Intrusion Detection and Prevention 198 WatchGuard Firebox System ...
Page 242: ...Chapter 12 Setting Up Logging and Notification 220 WatchGuard Firebox System ...
Page 256: ...Chapter 13 Reviewing and Working with Log Files 234 WatchGuard Firebox System ...
Page 274: ...Chapter 14 Generating Reports of Network Activity 252 WatchGuard Firebox System ...