Samsung VC240 Reference Manual page 18

Note:
When an H.323 endpoint (or other H.323 entity) within the enterprise connects to the SCOPIA
PathFinder Server in the DMZ via the internal firewall
a SCOPIA PathFinder Client within the enterprise, or use H.460-enabled endpoints. Otherwise you
must open the internal firewall to the SCOPIA PathFinder Server (1024-65535).
Table 1-10
Table 1-10 Outbound ports supported by SCOPIA PathFinder Server
Port Range Protocol
53 DNS (UDP)
1719 RAS (UDP)
(configurable)
1720 TCP
3089 TCP
RADVISION | RADVISION Port Security Reference Guide
Figure 1-2 Contacting SCOPIA PathFinder Server from within the enterprise
lists the outbound ports supported by SCOPIA PathFinder Server.
Functionality
Query DNS for
domain per call
Communication
with gatekeeper
H.323 IP call
signaling
Neighbor server
signaling and media
connection
(Figure 1-2
Direction Result of Blocking Port on
Firewall
SCOPIA Cannot support domain
PathFinder name calls and dialing by
Server to URI.
another server
SCOPIA Cannot relay H.323
PathFinder communication.
Server to the
main
gatekeeper
SCOPIA No signaling capabilities:
PathFinder guest users cannot dial into
Server to internal endpoints
external SCOPIA
PathFinder
Server
SCOPIA
Cannot connect to neighbor
PathFinder server.
Server to
another Server
on page 18), you need to install
Recipient Client
or Server Type
DNS server
Gatekeeper
Any H.323 entity
using a Q.931
signaling in DPA
mode
PathFinder Server
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