UNIX for Advanced & Expert Users

Hello everybody,

Look, im having problems with connections from other server, i must recieve maximus 5 connections from the other server, when I run 'netstat -A | grep <THE_OTHER_SERVER_IP>' I can see how many connections I have already established, but when they open another connection, i mean more than 5 connections, how I can block them? or...

When i see more than 5 connections, how i can kill an specific connection? because with 'netstat -A | grep <THE_OTHER_SERVER_IP>' i can see only the IP and ther port of those connections but not the PID of each process, and when I do 'ps -aefL | grep <THEIR_PROCESS_NAME>' y can see iqual number of process with their PID but how i can concatenate the PID with connections? have this sence?

I´m using Unix 7.1.1

PS: Im sorry but my natural language is spanish, not english. Please help!!! or I'll be fired

See How do I restrict logins?

Thanx RTM but that is not my problem exactly, i dont need to restringe logins, i need to restringe numbers of connections, i need to restringe at maximus 5 connections for determinate IPs, that have sence? Plz ur help... Thanx

If you read that and understand what they are doing, then you can change the logic and create a script that will count the number of connections and if there are 5, deny any more connections. You will probably want to insure you also kill off any terminal processes that are idle for more than xx amount of minutes to insure new connections can come in and aren't waiting for folks that are just idle and doing nothing (info on that page will explain how).

RTM, the dont open a telnet connection that i can see using "who" command, the open an especific port and then they established the connection and send us their data, i only can see their connections using "netstat" command. This kind of connections i need to restringe at max 5.

Im sorry if my english is not good. Thanx

How are they connecting? What are software is controlling these connections (example connection is to Sybase)? You may have to look at the specific software to be able to lock the connections to 5 or less. But then you may still end up with problems where you have 5 processes that haven't closed the connections making it impossible for new connections to start up.

Give as much information as you can on your problem.

They have an aplication that send us via tcp/ip some values, we use those values in our aplication to generate bills, when they have a lot of fata to send us, the open new connections but i want to restringe their connections to max 5, we only recibe those data. This answer your question?