java - Developing a tool to know who connected to remote machine? -

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scenario: team of 22 members daily log on local machines unique ids , connect remote machines set of logins.

here logins used connect remote machines not unique..i mean more 1 machine can connected same user name..

in 1 line 22 remote machines have 5- 6 logins used 22 members..

problem: remote machines not dedicated each employee..everyday need send mail group asking connected specific remote machine..and if 1 replies yes..we ask them disconnect..

i want develop small tool using java, runs on every machine , displays machine used one..

the code mentioned in site useful not specify used login? link : http://lazynetworkadmin.com/content/view/34/6/

i hope made point clear :)

please guide me how can proceed?..do think possible?

note: forgot mentioning operating system, is: windows xp

on remote machine can run netstat program, outputs this:

c:\> netstat -n | find ":80"   tcp    192.168.1.33:1930      209.85.129.190:80      established   tcp    192.168.1.33:2749      74.125.39.139:80       established   tcp    192.168.1.33:2861      74.125.171.167:80      time_wait

from output can see network connections established. in third column see ip address , port of other host. find keeps lines contain ":80" (which in case remote http hosts i'm connected to). since know port remote hosts connect to, can filter port number. third column contain ip addresses , ports of computers connected host.

from ip address should easy find out computer is.

update:

as want use java, should straight-forward do:

  1. run netstat -n command.
  2. capture output in list<string>.
  3. split each line words.
  4. keep lines word[0] tcp, word[1] ends :3389 , words[3] established.
  5. split word[2] of these lines @ colon. first element ip address.
  6. report list of these ip addresses central server.

on central server, have little program accessible via web server:

  1. the server keeps list of active connections. each consists of remote host, client host , timestamp has been updated last time.
  2. accept incoming connections remote machines.
  3. receive list of client ip addresses 1 connection.
  4. remove "active list" client ip addresses have been reported ip.
  5. display resulting list.

for example:

  • initially, list of active connections empty.
  • remote0 sends 192.168.0.33,192.168.0.35 active clients.
  • the list of active connections contains remote0:192.168.0.33, remote0:192.168.0.35.
  • some time later, remote0 sends `` (an empty response) active clients.
  • now list of active connections empty, too.

the web server therefore needs process 2 urls:

  • /connections/list listing active connections
  • /connections/update updating connections single remote host

sounds bit of work, doable. , when it's finished feels quite usable me.


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