get ascii data and send it forward

[Konri]

Hi,
I want to receive Ascii data on port 9123 and send it forward to many other IP's on the same port or different ports. How can I do it.
I know that i can use "netcat" to catch network data

netcat -l -p 9123 >> net-data.txt &

I can look at the data using "tail"

tail -f net-data.txt

But how can I send this data forward to other ip addesses?
For example:
10.100.2.30 at port 9123
172.16.18.50 at port 32110
192.168.24.4 at port 5111

regards
K

 

[QatQat]

Not sure if it works but you could try redirecting nc input on a port to output on a different port

something like

nc -l -p 9123 | nc -b -l -p 32110

QatQat


If I could have sex each time I reboot my server, I would definitely prefer Windoz over Linux!

 

[QatQat]

correction,
from man pages it looks like you can't use -l with -p option.

so try something like

nc -l 9123 | nc 172.16.18.50 32110

QatQat



If I could have sex each time I reboot my server, I would definitely prefer Windoz over Linux!

 

[Konri]

It works only for one output. When I try to user more than one ip adresses, data is sent to the first one.

 

[SamBones]

I've never used NetCat or "nc", so I'm just guessing, but maybe something along these lines...

rm nc_cache.dat && touch nc_cache.dat

tail -f nc_cache.dat | 10.100.2.30 9123    &
tail -f nc_cache.dat | 172.16.18.50 32110  &
tail -f nc_cache.dat | 192.168.24.4 5111   &

nc -l 9123 > nc_cache.dat

Just an untested guess.

 

[SamBones]

Oops! Make that...

rm nc_cache.dat && touch nc_cache.dat

tail -f nc_cache.dat | nc 10.100.2.30 9123    &
tail -f nc_cache.dat | nc 172.16.18.50 32110  &
tail -f nc_cache.dat | nc 192.168.24.4 5111   &

nc -l 9123 > nc_cache.dat