| Users: | LR |
| Hints: | -R |
| Huntgroups: | LR |
| Additivity: | Append |
| Proxy propagated: | No |
This attribute indicates the physical port number of the NAS which is authenticating the user. It is only used in Access-Request packets. Note that this is 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 MAX Ascend terminal server constructs
NAS-Port-Id concatenating line type (one-digit), line number
(two-digits), and the channel number (two-digits) thus producing
a 5-digit port number. In order to "normalize" such encoded
port numbers we recommend to use a rewrite function (see section Rewrite functions -- `raddb/rewrite').
A rewrite function for MAX Ascend servers is provided in the
distribution.
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