Configuring Firewalls - Net2Phone MAX 410 User Manual

Net2Phone MAX 410/420/430 User Guide

4.2 Configuring Firewalls

In MAX-to-MAX calling (when you call a MAX unit from another MAX), if either MAX is connected to
a LAN that employs a firewall, you will need to configure settings on both the MAX and the firewall
before MAX-to-MAX calls can be placed. This section will explain how to make the necessary
adjustments.
1. On the Firewall:
a. Open UDPPORT 6801.
b. Open an additional UDPPORT in the range of 21000-65535.
c. Open a TCPPORT in the range of 21001-65535. This must not be the same number port
you opened in the previous step.
NOTE: If you have more than one Max behind the same firewall, you must repeat the process for
each unit, opening a different UDPPORT and TCPPORT for each.
2. In the Network Configuration Table on MAX's Network and Voice Configuration page:
After opening the appropriate UDPPORT and TCPPORT on the firewall, you must specify
these open ports on the Max device(s):
a. Change the TCP Start Port to the port you opened in step 1-c. For example, if you
opened TCPPORT 21057 in step 1-c, enter
Figure 15, below, illustrating the Network Configuration Table on the Network and Voice
Configuration page.
b. Change the UDP Start Port to the port you opened in step 1-b. For example, if you
opened UDPPORT 21000 in step 1-b, enter
in Figure 15, below.
Figure 15
3. Save your settings and restart the MAX:
After you have the desired changes, click the Save button at the bottom of the page to save
the new settings, then restart the unit. The new settings should now be in effect.
NOTE: Some firewalls require the opened port to be forwarded to the MAX's IP address. Consult
your LAN administrator to determine if this is the case with your firewall.
Section 4.2 – Configuring Firewalls
21057 for the TCP Start Port as shown in
21000 for the UDP Start Port as illustrated
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