ZyXEL Communications P-660RU-Tx Series Support Notes page 43

Service
FTP
Telnet
SMTP
DNS (Domain Name Server)
www-http (Web)
PPTP (Point-to-Point Tunneling
Protocol)

Examples

Internet Access Only

Internet Access with an Internal Server

Using Multiple Global IP addresses for clients and servers

Support Non NAT Friendly Applications
(1) Internet Access Only
In our Internet Access example, we only need one rule where all our ILAs map to
one IGA assigned by the ISP. You can just use the d efault Single NAT or you
could select Multiple NAT and select an Address Mapping Set with a
Many-to-One Rule. See the following figure.
(2) Internet Access with an Internal Server
All contents copyright © 2010 ZyXEL Communications Corporation.
P-660RU-Tx Series Support Note s
Port Number
21
23
25
53
80
1723
P-660RU-Tx
43