How to find backdoor in my Ubuntu computer

[Jigisha]

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My desktop computer is running with Ubuntu 10.04.3. My computer always connected to the internet. I heard that beforetime the Linux was safe from viruses but no i dont think so. There might be chance that someone have already installed the backdoor on my computer and accessing it whenever he/she want. How would i come to know about it if the backdoor installed in my computer? how can i find it?

[Aniela]

Someone might see and modify the files you get from a live-cd. To avoid this you can encrypt your home folder. It is something that the facility offers and I think it could be done a backdoor. Encrypting your home directory could not access the data if it is not the key.

[Jezriah]

The truth is, not how to check, I've never done. The only thing I can think of is trying to access the directory from a live-cd.
What number is the directory, specific to each user so that another user (with sufficient permissions) may install or uninstall whatever you want because you do not affect a user's personal directory for others. Remember in / home / user_name (which is the directory you're talking about) just keep your personal files and settings. The programs are installed into / out of your home directory and accessible to other users.

[Evoldo]

A Linux system protects you by:

• Login via ssh only, and only with very strong passwords or key-file
• it is actually only the necessary software accessible from the outside (ie the number of required servers), and these are up to date
• generally, the system is up to date in terms of security patches

Optix Pro backdoor any Windows, and has little to do with the topic.

[Dayanidhi]

I think the term backdoor exaggerated, is a regular maintenance service is expressly left open, many routers and modems have it, some are even remotely manageable by the operator.

[Savannah87]

If the back-doors were well planned, that's normal.

If they require a password to be activated, it will (probably) never stumble upon.