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NAS-Port-IdATTRIBUTE NAS-Port-Id 5 integer
| Users: | LR | |
| Hints: | -R | |
| Huntgroups: | LR | |
| Additivity: | Append | |
| Proxy propagated: | No |
This attribute indicates the physical port number of the NAS that is authenticating the user. It is only used in Access-Request packets. Note that here we are using “port” in its sense of a physical connection on the NAS, not in the sense of a TCP or UDP port number.
Some NASes try to encode various information in the NAS-Port-Id
attribute value. For example, the MAX Ascend terminal server constructs
NAS-Port-Id by concatenating the line type (one digit), the line number
(two digits), and the channel number (two digits), thus producing
a five-digit port number. In order to normalize such encoded
port numbers we recommend using a rewrite function (see Rewrite functions — raddb/rewrite).
A rewrite function for MAX Ascend servers is provided in the
distribution.