On Fri, May 5, 2017 at 11:33 AM, Rick Stevens <ricks@xxxxxxxxxxxxxx> wrote:
On 05/05/2017 09:19 AM, Doug wrote:
>
>
You could use tcpdump to watch network I/O. In a nutshell:
1. Stop the firewall
2. In a terminal window, run (as the root user):
tcpdump -n host <scanner-ip> (ideal if you know it)
or
tcpdump -n src host <host-ip> (if scanner's IP is unknown)
3. Run the scangearmp2 program and watch the output of the tcpdump
command. You should be able to see what ports are being used via that
method.
4. Restart the firewall and open the ports you discovered.
5. Try the scangearmp2 program again and see if it works.
That's a pretty general idea of a way to find port usage.
----------------------------------------------------------------------
- Rick Stevens, Systems Engineer, AllDigital ricks@xxxxxxxxxxxxxx -
- AIM/Skype: therps2 ICQ: 226437340 Yahoo: origrps2 -
- -
- Always remember you're unique, just like everyone else. -
----------------------------------------------------------------------
1. Stop the firewall
2. In a terminal window, run (as the root user):
tcpdump -n host <scanner-ip> (ideal if you know it)
or
tcpdump -n src host <host-ip> (if scanner's IP is unknown)
3. Run the scangearmp2 program and watch the output of the tcpdump
command. You should be able to see what ports are being used via that
method.
4. Restart the firewall and open the ports you discovered.
5. Try the scangearmp2 program again and see if it works.
That's a pretty general idea of a way to find port usage.
------------------------------
- Rick Stevens, Systems Engineer, AllDigital ricks@xxxxxxxxxxxxxx -
- AIM/Skype: therps2 ICQ: 226437340 Yahoo: origrps2 -
- -
- Always remember you're unique, just like everyone else. -
------------------------------
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Thanks. Will try it tonight. I know the ip of the printer therefore it is the first method.
I know definitely that it is a firewall problema because everything works with the firewall down.
JP
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------------------------------
/\_/\
|O O| pepebuho@xxxxxxxxx
~~~~ Javier Perez
~~~~ While the night runs
~~~~ toward the day...
m m Pepebuho watches
from his high perch.
/\_/\
|O O| pepebuho@xxxxxxxxx
~~~~ Javier Perez
~~~~ While the night runs
~~~~ toward the day...
m m Pepebuho watches
from his high perch.
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