topic Re: Multiple Telnet Sessions in Operating System - HP-UX

Multiple Telnet Sessions

Darrell Albee — Thu, 03 Jan 2002 20:43:05 GMT

Solution given on December 5 by Sridhar Bhaskarla was great however we have since had some people that do need multiple sessions. I have attached the script which was modified and inserted into our profile script to allow certain people multiple sessions. What is happening now is with the modifications the system is only letting someone with the ip address beginning with what is specified in the profile script multiple logins. Example: My ip address ends in 14.2 and if there are 3 people on that end in 14.22 and 14.24 and 14.17 then it does not let me on. How do I correct this problem?

Re: Multiple Telnet Sessions

Jeff Machols — Thu, 03 Jan 2002 20:48:10 GMT

try this

NO=`who -R |grep -x $IP|wc -l`

Re: Multiple Telnet Sessions

Craig Rants — Thu, 03 Jan 2002 20:52:13 GMT

The -x addition should work for you, you may also want to consider changing all the if/fi statements to one if/elif/elif../fi statement. That would probably work quicker for you down the line if your script keeps growing.

GL,
C

Re: Multiple Telnet Sessions

harry d brown jr — Thu, 03 Jan 2002 20:57:55 GMT

easy:

change your script to use grep:

#######
test=`echo $IP | grep -f ips.allow`
if [ "$test" != "" ]; then
BYPASS='Y'
fi
if [ "$IP" = "" ]; then
BYPASS='Y'
fi

#########
create a file called "ips.allow"::

172.31.17.1$
172.31.16.10$
DTS_TFLEX_TS01$
172.31.17.109$
172.31.17.5$

The "$" tells grep that it is the end of the line, so trailing characters will not match.

live free or die
harry

Re: Multiple Telnet Sessions

harry d brown jr — Thu, 03 Jan 2002 21:09:35 GMT

Darrell,

using my example as a stand alone script:

ips.allow:
172.31.17.1$
172.31.16.10$
DTS_TFLEX_TS01$
172.31.17.109$
172.31.17.5$

test:
#!/usr/bin/ksh
#
BYPASS='N'
read IP
test=`echo $IP | grep -f ips.allow`
if [ "$test" != "" ]; then
BYPASS='Y'
fi
if [ "$IP" = "" ]; then
BYPASS='Y'
fi
echo $BYPASS

here is a test:

# ./test
172.31.17.11
N
# ./test
172.31.17.1
Y
#

To test for "null" use "ctrl-d" to simulate it, as carriage return is a \n.

live free or die
harry