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Telnet Session Number

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Muhammed Cinsdikici

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Feb 19, 1999, 3:00:00 AM2/19/99
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Dear list members,
Does anyone help me on Linux Telnet sessions...?
I have a Linux server 2.0.34.. When our 5 clients login to this server
through the telnet program remotely.. Then
no one else can login to that server by using telnet.
In other words, telnet sessions is restricted to 5 by default settings... In
order to be logged in, we should wait
one of the persons connected to drop his session...
Can anyone tell me, how can i increase this number ???
Muhammed Cinsdikici
e-mail: cins...@bornova.ege.edu.tr

Brian McCauley

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Feb 19, 1999, 3:00:00 AM2/19/99
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"Muhammed Cinsdikici" <cins...@bornova.ege.edu.tr> writes:

> Does anyone help me on Linux Telnet sessions...?
> I have a Linux server 2.0.34..

No distribution? This is a Frankenstein system?

> When our 5 clients login to this server
> through the telnet program remotely.. Then
> no one else can login to that server by using telnet.
> In other words, telnet sessions is restricted to 5 by default
> settings...

The concept "default settings" does not really exist in a Frankenstein
system.

> In
> order to be logged in, we should wait
> one of the persons connected to drop his session...
> Can anyone tell me, how can i increase this number ???

Sounds like you may have a problem with the PTY devices.

Standard Linux supports upto 256 virtual terminals (rlogin, telnet,
xterm and so on). However you have to create the entries in /dev/.

The way PTY devices are handled in Linux has changed a few times so if
you have a Frankenstein system you may have incompatablities between
your libc, your kernel and your /dev/*.

Look out - in 2.2 it all changes again! (At least optionally). You can
have 2048 AFAIK.

Please show us the output of: "ls -l /dev/[pt]ty*"

Another possible explaination is that you are running out of process
table slots or memory. Do you have a lot of other stuff going on?

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Raymond Doetjes

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Feb 19, 1999, 3:00:00 AM2/19/99
to Muhammed Cinsdikici
Do a ls /dev/ttyp* and count the number of files. If you have only 5 then it
explains why you can connect only 5 sessions. You can probably make new ttyp's
with mknod. I have then from ttyp0 through ttypF.

Raymond

Muhammed Cinsdikici wrote:

> Dear list members,


> Does anyone help me on Linux Telnet sessions...?

> I have a Linux server 2.0.34.. When our 5 clients login to this server


> through the telnet program remotely.. Then
> no one else can login to that server by using telnet.

> In other words, telnet sessions is restricted to 5 by default settings... In


> order to be logged in, we should wait
> one of the persons connected to drop his session...
> Can anyone tell me, how can i increase this number ???

> Muhammed Cinsdikici
> e-mail: cins...@bornova.ege.edu.tr

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