Watchguard Firebox X1000, Reference Manual

Page: 79 / 264

Proxied Services
Reference Guide 67
spoofed, as WatchGuard cannot verify that these packets were actually
sent from the correct location.
Configure WatchGuard to add the source IP address to the Blocked Sites
List whenever an incoming HTTP connection is denied. Adjusting the
settings and MIME types is the same as for the HTTP Proxy.
RTSP
The Real-Time Streaming Protocol (RTSP) establishes and controls either
a single or several time-synchronized streams of continuous media such
as audio and video. It is the protocol used by RealNetworks G2 and Apple
QuickTime real time streaming media players.
Characteristics
• Protocol: RTSP
• Server Port: 554
• Client Port: any
• RFC: 2326
N
OTE
In addition to these TCP ports, there are some UDP ports that both the
client and the server use. The ports are determined dynamically but the
mostly commonly used ports on the client side are 6970 and 6971.
SMTP
Simple Mail Transfer Protocol (SMTP) is the Internet standard protocol
for transmitting and receiving email. Generally SMTP servers are (by
nature) “public” servers.
When using incoming static NAT with SMTP, auth must be added (see
“auth (ident)” on page 41) to the Services Arena. Configure auth to allow
incoming auth to the Firebox. This enables outgoing mail messages to
flow unrestricted from behind the Firebox to the numerous SMTP servers
on the Internet that use auth to verify other mail servers’ identities and
allows these servers to return messages through the Firebox to the
senders.