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09-01-2005 08:22 PM
09-01-2005 08:22 PM
No. of concurrent telnet sessions
Can you please let me know where can I find the number of concurrent telnet sessions that can be found on a linux server?
Certainly there would be a limit, but, how to find what is the limit? In which configuration file this will be present?
Thanks in advance for any information.
Regards,
VJ
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09-01-2005 08:29 PM
09-01-2005 08:29 PM
Re: No. of concurrent telnet sessions
# ps -ef | grep 'telnet'
hth.
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09-01-2005 08:43 PM
09-01-2005 08:43 PM
Re: No. of concurrent telnet sessions
I want to know how many sessions are allowed
I mean....
If I keep on opening telnet sessions, at some point of time, I cannot open any more sessions until the previous ones are closed.
Where this limit will be present in the system? how can I find the limit?
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09-01-2005 08:56 PM
09-01-2005 08:56 PM
Re: No. of concurrent telnet sessions
First link leads:
If you started with the original /etc/xinetd.d/telnet file, it should
look sort of like this after all the editing:
# default: on
# description: The telnet server serves telnet sessions; it uses \
# unencrypted username/password pairs for authentication.
service telnet
{
disable = no
instances = 100
flags = REUSE
socket_type = stream
wait = no
user = root
server = /usr/sbin/in.telnetd
log_on_failure =
log_on_success -= HOST
}
So, "instances = 100" <- is what are you looking for ...
Alex.
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09-01-2005 09:15 PM
09-01-2005 09:15 PM
Re: No. of concurrent telnet sessions
# This is for the telnet session. The inetd does not limit
# number of sessions, but number of pty in /dev does.
t:2345:respawn:/sbin/mini-inetd -f -s telnet /sbin/telnetd telnetd -L /bin/login
So, there is some other parameter that is restricting no. of telnet sessions.
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09-01-2005 09:24 PM
09-01-2005 09:24 PM
Re: No. of concurrent telnet sessions
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09-01-2005 09:37 PM
09-01-2005 09:37 PM
Re: No. of concurrent telnet sessions
I am new to linux
How to find the answer for 'what kind of linux I have'????
Some other person installed the linux. So, Pl. let me know how to check what kind of linux it is.
Regards,
VJ
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09-01-2005 09:43 PM
09-01-2005 09:43 PM
Re: No. of concurrent telnet sessions
cat /etc/issue
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09-01-2005 11:02 PM
09-01-2005 11:02 PM
Re: No. of concurrent telnet sessions
Regards,
Syam
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09-01-2005 11:09 PM
09-01-2005 11:09 PM
Re: No. of concurrent telnet sessions
as what user you are trying to login as? if it is root then number of root logins via telnet is restricted by /etc/securetty file which states what are the consoles which are allowed for telnet connections for root.
check the 'man login' for more details on securetty file.
otherwise what is the error message you are getting when it is not allowing you to login?
Regards,
Gopi
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09-03-2005 10:37 AM
09-03-2005 10:37 AM
Re: No. of concurrent telnet sessions
# This is for the telnet session. The inetd does not limit
# number of sessions, but number of pty in /dev does.
t:2345:respawn:/sbin/mini-inetd -f -s telnet /sbin/telnetd telnetd -L /bin/login
I would have a look at the number of /dev/pty* device files you have, e.g. ls /dev/pty* | wc -l
This may be the maximum number of concurrent telnet sessions that you are allowed. Once inetd runs out of available pty's no more telnet sesions can be created.
Cheers
Steven
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09-06-2005 01:22 PM
09-06-2005 01:22 PM
Re: No. of concurrent telnet sessions
cat /etc/debian_version
My recommendation -- use xinetd, don't bother with the mini-inetd.
-Ross
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09-06-2005 07:57 PM
09-06-2005 07:57 PM
Re: No. of concurrent telnet sessions
I am not telling that you are wrong. May me the configuration of the server I am looking at is changed by the administrators.
Thanks a lot for the suggestions you have given.
Sorry that I am not allocating any points.
As I did not get the info I am looking for, I am not assigning points.
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09-06-2005 08:08 PM
09-06-2005 08:08 PM
Re: No. of concurrent telnet sessions
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09-06-2005 08:51 PM
09-06-2005 08:51 PM
Re: No. of concurrent telnet sessions
thats the reason I have told thanks and assigned 1point to all of you who spent your valuable time for me.
Regards,
VJ