My problem is normal telnet <server> <port> does not work as nothing is listening on the port.
Is there a script that would fake connect to this port for me to test the firewall via telnet host port?
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Create a script with lines like these, adjusting for your particular shell and *NIX of course.
Save it at /var/tmp/port.script.bash.
Set the execute bit:
#!/bin/bash echo Executing my port script `date` >>/var/tmp/port.script.log echo Hello, welcome to the port script. ### end of script#!/bin/bash
echo Executing my port script `date` >>/var/tmp/port.script.log
echo Hello, welcome to the port script.
### end of script
Put a line in /etc/services for your port, or find the
assigned name of the port. For argument/example here, let's say you are
using the otherwise unassigned port 3121. (It's listed as unassigned in
the file on my SLES 11 system at home...)
Add a line:
myport 3121/tcpmyport 3121/tcp
Then use the (x)inetd super-daemon to start listening on that port, executing the script on each connect. This will vary based on *NIX, but it is either a direct edit of /etc/inetd.conf or /etc/xinetd.conf, or adding a file to /etc/xinetd.d.
You can follow the lead of what is there. Do a kill -HUP
on the running (x)inetd process to reread its configuration and start listening
to your port. The netstat -an command should show it listening.
On AIX, edit /etc/inetd.conf, add line:
myport stream tcp wait root /var/tmp/port.script.bash
port.script.bash
On Linux, create the file /etc/xinetd.d/myport:
service myport
{
socket_type = stream
protocol = tcp
wait = yes
user = root
server = /var/tmp/port.script.bash
}
Depending on the nature of the system being used for this "test" you may want to use a user other than root to execute the script on the port. Set permissions appropriately.
