How do i find who is connecting to my desktop remotely using 3rd party softwares?

Hi!

If you are not infected with rootkit chechk active network connections with:
"netstat -an"

to check open network connections.

If you are have rootkit installed, you would have to monitor traffic on your firewall or on dedicated machine on the same network with sniffer. If you have rootkit installed, the best thing would be to re-format computer.

"Rootkit revealer"
http://technet.microsoft.com/en-us/sysinternals/bb897445.aspx

HTH

Toni

If someone is spying the network, you can't find easily. Maybe he/she is using  a sniffer
But if he/she is connecting with VNC, terminal server, etc, you can use
netstat -n
and see who is connected to your pc

Search for any odd software on your machine - There needs to be something for the remote control software to connect to, usually an agent or something like that...

Nose about your PC a bit (look down in the system tray (bottom right corner) for icons you don't recognise, search through Add/Remove Programs in Control Panel etc. If you're not sure about the something, just post the name of it in here and someone will tell you what it is.

It's pretty darn hard to remote control someone's PC without a giveaway sign, as these pieces of software are not intended to be used as spying tools! That's where I'd start anyway...

It's also important to ask why you suspect this, as whether they're just looking at files, or actually remote controlling your desktop, use very different methods... :)

Pete

i suspect that someone is monitoring my screen activities remotely. Is there any way i can get a log of remote sessions to my PC for the last one week?

I very honestly doubt, that someone who has unathorized access to your computer would leave log file behind.

is this on a domain, or standalone?  Note, if this pc belongs to your employer, then their Security or IT Dept may be permitted to monitor your pc either overtly or covertly.  You should not attempt to stop this.

Are you responsible for IT Security ?  If not, you need to report this to your IT Dept.

This is on the domain. Yes i am responsible for IT security. WE have given delegated permission to our staffs for some admin related tasks. Could be one of them.
Also i got complains from some users that they suspect someone monitors their screen as well.

Well let's not jump the gun too soon - What exactly is it that makes you think someone is watching? Positive its not just paranoia?

I would ask the question "Why", as PeteJThomas did.

Why do you suspect that someone is monitoring information, whether be it by a trojan sending screenshots/keystrokes, an active remote session watching what you're doing, or a network sniffer. That answer might give a better indication as to where you should look/fix. Could it simply be an employee stealing documents with a USB thumbdrive? The answer to "why" will help us help you! :)

If it is a rootkit/trojan, I would suggest disinfecting using an uncompromised 3rd party source.
If it is a remote session, as many have said, you will see an open connection with you run netstat -n.
If it is a sniffer, then perhaps run a network audit tool to see what programs are installed over your entire domain. There are some free/trial versions out there. May not be practical for a very large network, but under 100 users is managable to break down.

Check for strange programs that may have been installed
Check your security event log to see who's credentials have been logged on your machine.(or, denied access multiple times)

I already checked the security log and i did not find anything.
while working on the computer, i suddenly noticed that my mouse is moving out of my control, just like someone moves remotely. The same felt by users too.