Paradyne CSU User Manual download pdf (Page 155)

100

101

5. Configuring the FrameSaver SLV Router

9128-A2-GB20-80 September 2002

5-5

Network Address Translation

Network Address Translation (NAT) is used when a private network’s internal IP

addresses cannot be used outside the private network. IP addresses may be

restricted for privacy reasons, or they may not be valid public IP addresses.

The router provides NAT as described in RFC 1631,

The

IP Network Address

Translator (NAT).

NAT allows hosts in a private (local) network to transparently

access the external (public or global) network by using a block of public addresses.

Static mapping enables access to selected local hosts from the outside using

these external IP addresses.

Traditional NAT and Network Address Port Translation (NAPT) are supported.

When both NAT and NAPT are enabled, one-to-one NAT mapping is performed by

translating a range of assigned public IP addresses to a similar-sized pool of

private addresses, followed by many-to-one NAPT bindings. Up to 254 IP

addresses can be allocated for NAT usage.

IP Options Processing

The NAT and NAPT functions handle and process the IP datagrams with options

set as described below. No command is available to set IP options.

The router does not process (and drops) any IP datagrams with the following IP

options:

Loose source and record route (type 131)

Strict source and record route (type 133)

Security (type 130)

Stream ID (type 136)

The router does process IP datagrams with the following IP options, but does not

provide its IP address or timestamp information in the response message:

Record route (type 7)

Timestamp (type 68)

Applications Supported by NAT

The router supports the following applications and protocols:

FTP

HTTP

Ping

RealPlayer

Telnet

TFTP

1 2 ... 150 151 152 153 154 155 156 157 158 159 160 ... 469 470

Comments to this Manuals

No comments

Paradyne CSU User Manual Page 155

Comments to this Manuals

Related products and manuals for Hardware Paradyne CSU