ZyXEL Communications P-660RU-Tx v3 SERIES, Support Notes

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P-660RU-Tx v 3 Series Support Note s
Service Port Num ber
FTP 21
Telnet 23
SMTP 25
DNS (Dom ain Nam e Server) 53
www-http (Web) 80
PPTP (Point-to-Point Tunneling
Protocol) 1723

Exam ples

Internet Access Only

Internet Access with an Internal Server

Using Multiple Global IP addresses for clients and servers

Support Non N AT Friendly Applications
(1) Internet Access Only
In our Interne t Access example, we only need one rule where all our IL As m ap 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.
P-660RU-T
x v3
(2) Internet Access with an Inter nal Ser ver
43
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