Setup guide

No ports need to be open if you have a simple NAT router and our Freedom Service -
issued Phone Adapter has a private IP address. Most of our customers just connect their
Freedom Service phone adapter to their router and it works. Our Freedom Service is
designed to work behind NAT routers.
If you have a firewall, you must give the Freedom Service Phone Adapter rights to access
certain Internet ports, including:
• 53 using UDP protocol
• 69 using UDP protocol
• 123 using UDP protocol
• 1503 using UDP protocol
• 1720 using UDP protocol
• 5060 through 5063 using UDP protocol
• 10,000 through 20,000 using UDP protocol
If you have a problem and it is diagnostic is a NAT issue, please contact us so that we can
assist you further via chat or by phone and below you may read and get a further
understanding about NAT and it’s features:
NAT
Short for Network Address Translation, an Internet standard that enables a local-area
network (LAN) to use one set of IP addresses for internal traffic and a second set of
addresses for external traffic. A NAT box located where the LAN meets the Internet makes
all necessary IP address translations.
NAT serves three main purposes:
• Provides a type of firewall by hiding internal IP addresses
• Enables a company to use more internal IP addresses. Since they're used internally only,
there's no possibility of conflict with IP addresses used by other companies and
organizations.
• Allows a company to combine multiple ISDN connections into a single Internet
connection.
In Computer networking, the process of network address translation (NAT also known as
network masquerading or IP-masquerading) involves re-writing the source and/or
destination addresses of IP packets as they pass through a router or firewall. Most systems
using NAT do so in order to enable multiple hosts on a private network to access the
Internet using a single public IP address (see gateway). According to specifications, routers
should not act in this way, but many network administrators find NAT a convenient
technique and use it widely. Nonetheless, NAT can introduce complications in
communication between hosts.
Overview
NAT first became popular as a way to deal with the IPv4 address shortage and to avoid the
difficulty of reserving IP addresses. Use of NAT has proven particularly popular in countries
other than the United States, which (for historical reasons) have fewer address-blocks
allocated per capita. It has become a standard feature in routers for home and small-office
Internet connections, where the price of extra IP addresses would often
Outweigh the benefits.
In a t
yp
ical confi
g
uration
,
a local network uses one of the desi
g
nated “
p
rivate” IP address