Security covers a wide-ranging set of topics including Users, Permissions, Authentication, Authorisation, Upgrades, Firewalling, Hardening, etc.

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How can I scan for possible viruses on my Ubuntu system? [duplicate]

I think I may have a virus. How would I go about checking for a virus and how can I protect my computer from any other virus? Please give detailed answer as I'm still learning about Ubuntu.
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3answers
386 views

Running Programs As Root While Online

I'm remastering an Ubuntu based distro, meant to be used live only and primarily as a browser so a users hard-drive can be virus free while online. This live browsing adds security for Linux users, ...
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1answer
11k views

flashplayer security doubts

I am an Ubuntu newbie and I installed Ubuntu Desktop 12.04, 64 bit. As I noticed the Firefox is the actual version, but the Adobe Flashplayer was the 11.2 version which has, I guess, some security ...
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1answer
317 views

Is it possible or a good idea to run a more or less secure minecraft server without having pre-experience in Ubuntu?

Hello Dear Ubuntu Questions Community, This is my first on this site and is very important to me! I currently run a Minecraft Server that runs on a server that I have to move aways from, and that in ...
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1answer
3k views

eth0: PACKET SNIFFER(/sbin/dhclient [duplicate]

Im new to Ubuntu and would like help please, I ran ProShield and got this error - eth0: PACKET SNIFFER(/sbin/dhclient I ran the following programs below and nothing came up as far as I can see. ...
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1answer
3k views

Store the passphrase of encrypted disk in /etc/crypttab encrypted

I'm wondering, if I can store the passphrase of an encrypted disk in /etc/crypttab encrypted - and only possible to decrypt that by that OS, where I created. Is it possible? (because, I want auto ...
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1answer
141 views

How can I check if an Apport report does not contain any sensitive information?

I know the crash reports are stored at /var/crash. But can I do something to check that the report does not contain any sensitive information? Where can I find the list of reports that I or other ...
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1answer
1k views

“Your Java version is out of date.” on Ubuntu 2014.04

With fully updated Ubuntu 2014.04, Firefox tells me: Your Java version is out of date. How to update Java? Typing java -version in a terminal tells me: java version "1.7.0_51" Java(TM) SE ...
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1answer
303 views

What are the features in Snappy Ubuntu that make it more secure than the normal Ubuntu?

I am thinking of using Snappy Ubuntu for IoT application. Security is important in IoT. What is the difference between Snappy Ubuntu and the normal Ubuntu that makes Snappy more secure compared to ...
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2answers
921 views

How to protect from cloning?

I have no experience using Ubuntu before I'm doing a point of sale project for a restaurant which will run in local Lan (offline not online). I will setup one mini PC as an Ubuntu web server. and my ...
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0answers
49 views

Ubuntu chrome, and firefox with untrusted certification authorities

I have this as some of my server certificates, also some authorities. At least three users I know have this. Is this a bug? What should I do? dpkg -l ca-certificates Desired=Unknown/Install/Remove/...
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1answer
171 views

OpenSSH: hacked before set up?

Today I tried setting up OpenSSH on my computer with the hope of being able to connect to it from a different computer at work. This was my first time attempting to use open-ssh. I did the following ...
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3answers
614 views

Run rkhunter regularely on a desktop system

I want to get a warning on my desktop when rkhunter finds something odd on my system. I whitelisted some files and dirs that seem ok in /etc/rkhunter.conf so I get no warnings anymore. Now I want to ...
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0answers
52 views

How to prevent ssh on local host?

I came to know that on ubuntu, sudo and su is not available in a guest session because of security concerns. But all I need to do, if I have the login credentials of a user in the sudoers list is too ...
0
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1answer
73 views

Why is su disabled from guest sessions?

From guest you can't sudo or ssh. Why I can't sudo is simple. But why can't I su? What is it that su provides that ssh to the user@localhost wont? The reason for this question being my other ...
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1answer
62 views

Can console be suspended and ask for a password on wakeup?

Although I suspect that this is not currently possible, I would just like to ask because it would be something very useful in my opinion. Because when I close my lid and I am in the GUI my computer ...
0
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1answer
131 views

Are there any security problems to running an http server using Python's built in module?

I have a presentation to make to a few people. It's interactive with python CGI scripts. Are there any security problems with using python3 -m http.server --cgi 8000? Each person will be using their ...
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1answer
3k views

Help connecting to my schools wireless network

My school´s hates everybody that dosen´t run Windows 7/8. Therefor, they will not give me support in connecting to my School´s wifi, which i need badly. I have a guide for Windows 7 and I hope that ...
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2answers
1k views

Connect button grayed out in 802.1x authentication dialog

Since I upgraded to 15.04 I can't connect to our office wired network anymore since I can't press connect in the authentication dialog.
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1answer
48 views

using VNC with SSH securely

While I know there is a plethora of available information on how to set up VNC for remote desktop viewing, some of which outlines the importance of using SSH to ensure security, I want to know dome ...
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1answer
843 views

Is Ubuntu really more secure than Windows? [closed]

For years I am considering Ubuntu (or any Linux distribution) far secure than Windows. But when I read Most vulnerable operating systems and applications in 2014 I couldn't believe it. That's why I ...