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

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2
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1answer
238 views

Default resource cap on root user

I happened to see that on my Ubuntu 12.04 some resources of the root user is capped. I have not capped anything explicitly and my limits.conf as far as root user is concerned is empty. Here is the ...
1
vote
1answer
115 views

Is there a way to encrypt my files without full disk encryption

I want to encrypt my files and folders without full disk encryption and encrypted volumes. Can anyone help me?
1
vote
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 ...
1
vote
2answers
519 views

How can I disable the Terminal Emulator for certain users?

How to prevent specific users from using the terminal emulator?! I make a trick by writing a script in .bashrc which request a user to enter a password to be able to use the terminal emulator. But ...
0
votes
2answers
130 views

How can ending process introduce security risk?

I get this message when ending tasks in System Monitor: I understand ending processes will remove data in memory and break its current session, but how can ending a process create a security risk??
3
votes
3answers
2k views

What do sapd, skysapd, sksapd, and ksapd do?

Does anyone know what sapd, skysapd, sksapd, ksapd do? Are they viruses? I tried clamav it didn't recognized them as viruses. I also realized that my /etc/rc.local has multiple copies of this: ...
2
votes
2answers
442 views

UFW and firewall

So I recently installed ubuntu and I have been working with it no problem.While browsing through the security guides (specifically: https://wiki.ubuntu.com/BasicSecurity) I noticed this: "enable the ...
0
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1answer
21 views

Restricting certain actions in a directory

So i have a web project, its a website that gives certain problems and the users try to find a solution using the C language, the compiling process is done by PHP, what i want to know is how can i ...
3
votes
2answers
459 views

Functional ubuntu-touch lock screen

Is a functional lock screen (e.g. pin or password) for Ubuntu Touch being developed? The nearest thing I could find was a design mockup from July with a hardcoded password http://design.canonical.com/...
0
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1answer
194 views

Why Ubuntu doesn't upgrade to the latest version of GnuPG?

Two days ago GnuPG announced the release of a new stable version. The new version is 1.4.16 but the repository of Ubuntu Saucy have 1.4.14. I don't understand this because the new release cover a ...
1
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2answers
943 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 ...
0
votes
1answer
764 views

Cannot connect to Wifi with WPA2 AES Encryption Security

I am using Ubuntu 12.04 and I am having a problem in connecting to the Router with WPA2 Security with AES Encryption. I am able to connect to that Router using my cellphone, Windows PC but my Ubuntu ...
0
votes
1answer
218 views

can not paste or make new folder on file system directly with out gksudo nautilus?

I have installed ubuntu 12.04, But I can not paste or make new folder in File system, however I can paste new files with gksudo nautilus, but how can i do directly without gksudo nautilus??
15
votes
2answers
1k views

Does linux have a signature system for executables?

Windows has a signature system which allows you to make sure that an executable hasn't been modified after it has been signed. I used to use this as a security measure in Windows. Does linux have ...
1
vote
1answer
161 views

Why it is important to Securing /dev/shm and /tmp

I see a lot of blogs talking about security and specially how to secure /dev/shm and /tmp I would like to know why it is important to secure these folders?
0
votes
2answers
2k views

How do I set a password for guest login? [duplicate]

I'd like to set a password for the guest account. How can I do this? (This question is not answered under the similar question in this forum, see below.) The last time this was asked on this forum ...
3
votes
2answers
3k views

Untrusted Application Launcher

So I'm trying to create a desktop icon for an application, and I dragged it from the top-left menu (I think it's called Dash or something). I clicked on it and it says it is untrusted and refuse to ...
0
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2answers
67 views

Security question. Ubuntu installation on windows PC

I am installing Ubuntu alongside windows 7 because I believe Ubuntu is more secure (in terms of viruses, spyware etc). So the computer will be contain both OSs. In such a situation, is Ubuntu still as ...
-1
votes
3answers
2k views

Does ubuntu allow users to run ESET Smart Security?

Does ubuntu allow users to run ESET Smart Security? I am considering upgrading ubuntu from Windows 7 but I'm not sure if it allows the use of outside security programs.
3
votes
1answer
92 views

What checks should be used when installling non-repository or offline software?

Case 1) Let's say some software isn't available in the repositories and you have to download it from a website and install it. Case 2) You have downloaded a DRM free paid software but can no longer ...
3
votes
3answers
12k views

upgraded to 13.04 now getting JREDetection "Your security settings have blocked an untrusted application from running

I upgraded Ubuntu 12.10 to 13.04 upgraded java to 1.8.0-ea-b118 and still cannot run my application to connect to my office. I have checked all the options and spent all day looking for hits on this ...
2
votes
0answers
361 views

Upgrade Apache 2.22 to a version that supports ECDHE

I'm trying to setup my Ubuntu 12.04 server installation to support perfect forward security. It seems that the default Apache 2.2.22 build does not support ECDHE. Any suggestions on a good way to ...
3
votes
1answer
962 views

Security and Ubuntu [closed]

I have used Linux before (Ubuntu 13.04), but I have moved back to Windows after having compatibility issues with Windows programs ex. AutoCAD and ProEngineer Wildfire. However, I tried using Linux ...
1
vote
3answers
97 views

Can i prevent my system reading any USB files?

I have some computers around me. I don't want any one to insert any USB. Am afraid someone has malware in the USB when inserting in one computer it will infect the others, because they are connected ...
0
votes
1answer
138 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 ...
-1
votes
1answer
97 views

which is strong ubuntu dist or windows? [closed]

Gentlemen, i am using windows in my company. I want to secure my system or to secure my company systems. should my company use linux(ubuntu) to become more secure than windows 8 ? what also the ...
0
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2answers
2k views

Best Practice for Installing Java on Ubuntu / is it secure?

Much has been said about the security risks associated with Java. However the burp suite (pen test) depends on Java. Is it secure to install Java? if so, how to properly do it? My Ubuntu is a web ...
0
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1answer
246 views

Two-factor authentication on Ubuntu One

Is there a way to enable two-factor authentication to access my Ubuntu One account?
-1
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2answers
1k views

How to create a root privilege file for a normal user?

I got a scenario where a customized Ubuntu 12.04 Linux OS has a read only filesystem which doesn't have terminal access. My goal is to create a file with root access using normal users permission. I ...
0
votes
3answers
189 views

How do I see what PPA or PPAs are installed or in use

Sometimes I install good guy PPAs because someone on askubuntu says to use add-apt-repository . Later I wonder, where have they gone? Where can I find a list of Personal Package Archives that are ...
1
vote
2answers
1k views

How do you remove your originating IP from Thunderbird?

I'm in a peculiar position where I need to remove my IP address from my email headers (I have a pen name). I don't want my readers knowing who I am or where I live. I use Gmail to send out my emails ...
2
votes
3answers
542 views

Can an Avira Antivirus Live CD scan for viruses that would infect Ubuntu?

http://www.avira.com/en/download/product/avira-rescue-system If I were to use that would it detect things for Windows, and for Linux? Not just the ability to scan the filesystem, but actually look ...
3
votes
1answer
826 views

Is there a secure way to pass authentication parameters for proxy to applications?

I am behind a proxy server and need to specify authentication parameters to access the internet. For this, I have exported my username, password, host and port_no in my /home/$USER/.bashrc file and in ...
0
votes
1answer
3k views

How to set Grub Password [duplicate]

Red Hat Linux has grub-md5-crypt for setting up a grub password. How to do the same in Ubuntu 13.10 ?
0
votes
1answer
164 views

Is there any anti-theft / robber-spy application on Ubuntu Touch?

theft application on Ubuntu Touch Saucy which could help protect my tablet/phone ? I mean an application running as daemon on back-end and waiting for remote activation. Activated by an GPS event, ...
0
votes
1answer
1k views

Alternative Open Source software to GFI end point security

What are the GUI open source alternatives To GFI end point security for Windows? knowing that I'm using Ubuntu 12.04 64bit Thanks in advance...
0
votes
3answers
5k views

Unable to Disable Automatic Login on 13.10

I have my settings as such, but when I power-on my laptop, it logs me right in, with no prompt. Does anyone else have this problem?
3
votes
3answers
173 views

My computer may have been compromised, what should I do?

A few weeks ago, my machine (lets call it "main") was logged into wirelessly from an unauthorized host, probably using ssh. I did not detect the intrusion until a few days ago, and my machine is ...
1
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0answers
48 views

Does the “security” repository provides anything not found in the “updates” repository?

For the limited number of package I looked at (e.g. apache), I found that the package version in the updates repository is always newer than or equal to the version available in the security ...
1
vote
1answer
208 views

Are all “Important security updates”, updates to already installed packages?

I'm running 12.04, and I've never downloaded any drivers for the installation of any peripheral devices. Yet, I noticed a fair few "Important security updates" involving drivers/utilities for HP ...
1
vote
1answer
944 views

SSH: Dynamic DNS vs Port Forwarding

I recently set up SSH on my newly installed ubuntu, and already set up public key authentication and know that it works properly remotely on my local network. Now I decided that I would make it ...
5
votes
2answers
4k views

Building TrueCrypt on Ubuntu 14.04

With the whole NSA thing people tried to re-build identically looking binaries to the ones which truecrypt.org provides, but didn't succeed. So some think they might be compiled with back-doors which ...
6
votes
1answer
622 views

Can apparmor restrict interpreted languages?

For interpreted/vm languages(e.g. python, java, shell scripts) can apparmor be set to only confine a particular script or program? If so, how?
0
votes
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 ...
1
vote
0answers
53 views

sudo apt-get update stuck at 100% [Waiting for headers]? [duplicate]

Here is the sample Hit http://security.ubuntu.com raring-security/main Translation-en Hit http://security.ubuntu.com raring-security/multiverse Translation-en Hit http://security....
5
votes
1answer
932 views

Seeking for a better solution to restrict access in GRUB2 menu

I just read that in certain situations you should also protect access to your GRUB2 menu by setting a password and may be refining acces by adding --unrestricted or --users as arguments to menuentries ...
1
vote
3answers
624 views

How to disable Bit Torrent Client

There is a lot of traffic generated by my Transmission Bit Torrent client which I don't use at all. I see that this application comes pre installed in Ubuntu 12.04. So, is there a way through which I ...
0
votes
2answers
56 views

How to stop administrative password change

It is extremely easy in Ubuntu to change the administrator password by using the recovery console and dropping to root. Is there any way to stop a root user from changing the administrative password?
5
votes
1answer
386 views

What can a user do without sudo?

I'm setting up a server and want a user to only have access to his own files. I do a regular adduser command: sudo adduser username And give the user a password. Then I log in to it via ssh and see ...
2
votes
0answers
557 views

Apache shows blank white page after 2 to 10 hours

I am using ubuntu 12.04, it has to network cards, A = internal 10.0.0.0 and B public Ip , I have only apache2 installed, after 2 to 10 hours the website shows as a blank white page on the public ...