Firewall - AudioCodes Mediant 800B Installation And Maintenance Manual

Installation and Maintenance Manual
9

Firewall

The following tables describe the firewall rules that need to be configured on the enterprise
firewall.
Traffic From
TCP SBA
TCP Teams
Client
TCP SBA
TCP Teams
Client
TCP SBA
TCP Teams
Client
Traffic
TCP
TCP
Traffic
UDP/SRTP
Firewall between SBC and Teams client like what is performed for DR SBC with

Media Bypass feature:
Traffic
UDP/SRTP Teams
UDP/SRTP SBC
UDP/SRTP Teams
Version 1.0.21
Table 9-1: Port - SBA  Teams Client
To
Teams
Client
SBA
Teams
Client
SBA
Teams
Client
SBA
Table 9-2: Port - SBA  SBC
From To
SBA SBC
SBC SBA
Table 9-3: Port - SBA  NTP Server
From To
SBA NTP
Table 9-4: Port – Teams Client  SBC
From To
SBC
Client
Teams
Client
SBC
Client
Source port
Any
Any
Any
Any
Any
Any
Source port
Any
Any
Source port
UDP: Any (by default
SBA uses
time.microsoft.com)
Source port
50 000 – 50 019
Defined on the SBC
50000 – 50019
69
Destination port
4444
4444
3443
3443
8443
8443
Destination port
5061
5061
Destination port
UDP: 123
Destination port
Defined on the SBC
50000 – 50019
Defined on the SBC
Microsoft Teams
9. Firewall