Installing and Administering Internet Services

54 Chapter 2

Installing and Conﬁguring Internet Services

Specifying telnet Pseudo-Terminals

Beginning with the earlier 10.30 version of HP-UX, the pseudo-terminal

in the telnet/telnetd internet service uses two STREAMS-based

pseudo-terminal drivers (telm and tels). Because of this, you must tune

a new kernel parameter for telnet pseudo-terminals: NSTRTEL.

NSTRTEL speciﬁes the number of telnet slave devices to be created. The

number of telnet sessions is limited by the value of NSTRTEL. The

default value of NSTRTEL is 60, and the maximum possible value is set

by MAX_STRTELS. Note that if you want to change the value of NSTRTEL,

you can use SAM, but you can only increase the value beyond the default

of 60 (you cannot make the value less than 60). If you do increase the

value, the additional devices will automatically be created. If a user tries

to telnet to a system that does not have any telnet pseudo-terminals

available, an appropriate error message is displayed.

The device ﬁles are placed in /dev/pts and are named t0, t1, etc.