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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3answers
259 views

Are there any security suites available for Ubuntu? [duplicate]

I'm new to Ubuntu, but I've heard Linux, especially Ubuntu is an Virus Free OS. Still are there any security suites available for Ubuntu that could make it more secure? Or do I not need any extra ...
2
votes
1answer
78 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 ...
0
votes
1answer
81 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 ...
9
votes
4answers
19k views

What antivirus programs are available?

What antivirus programs are available for Ubuntu? We previously used Symantec Endpoint Protection but it does not work in Ubuntu.
2
votes
1answer
92 views

Is it necessary to have a Firewall in Ubuntu?

I was wondering if a Firewall could give some more security, and if yes which one would you recommend.
1
vote
0answers
37 views

How to disable Pointer Obfuscation on 12.04

I am working on a security project for school and need to overflow a buffer, I therefore need to overwrite the eip, but for some reason I can't. The A's that I overwrite the buffer with are spread all ...
1
vote
0answers
164 views

SSL connection fails to authenticate certificates for some pages?

This time, i am going to solve some irritating things with my networking on school, using ubuntu 12.10. I am perfectly able to connect to the proxy authenticated network the school uses. But my ...
5
votes
2answers
274 views

Is portfowarding to my localhost on my personal Ubuntu computer secure?

After installing Lamp on my personally Ubuntu computer, I am running a application that requires to connect to the web and send SMTP mail; for example paypal needs a www address to notify successful ...
10
votes
2answers
273 views

What security context software does Ubuntu use?

Does Ubuntu use SELinux by default and if not, how is security context managed? For example, allowing processes to run as root without security context can be a security risk. The help page about ...
1
vote
1answer
27 views

Key security fixes - pace of adoption into 12.04 LTS

I would like to ask about how quickly security issues are dealt with in the 12.04 disti. I am recently using GnuPG on my 12.04 box and am concerned that the following security fix / most up to date ...
0
votes
0answers
250 views

vmware player bridged does not work when on vpn

The problem I am having now is I vpn off from my job to a vpn provider. I then load my kali linux vm and connect to the vpn my security labs. I can run scans, enumerations etc. The problem is when I ...
10
votes
1answer
1k views

How to give ssh access to trusted friend?

I've got a friend that I trust enough to give ssh access to one of my servers. To this end, I've created a user account for him. The box is accessible by key authentication only, not passwords. ...
0
votes
2answers
75 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?? ...
20
votes
3answers
27k views

How do I setup OpenVPN so I can securely use the internet from an unsecured hotspot?

Goal: I want to be able to securely use the internet via my home PC while my notebook is connected to an open hotspot/access point. I do know that I can use a SSH tunnel/SOCKS proxy, but I don't want ...
0
votes
0answers
202 views

Unknown failed password logs

I decided to install steam on ubuntu 12.04 from the official repo. However after the installation(which required me to enter my password a second time in a terminal to install required updates) I ...
3
votes
2answers
132 views

Is enabling TRIM on an encrypted SSD a security risk?

I recently installed Ubuntu 13.10 on an SSD drive using the "encrypt the new Ubuntu installation for security" option. I wanted to enable TRIM, so was following the guide provided here. One step says ...
1
vote
1answer
30 views

Security measures for Thunderbird and Pidgin

I want to install Thunderbird and Pidgin. Is it safe to give passwords in these applications. Please tell me what security measures should be taken while using these kinds of applications.
14
votes
6answers
11k views

Ubuntu One behind a proxy, how to make it work?

I am behind a web proxy server at work (no authentication) and I have set it up in Gnome (configuration applied system-wide). It works fine for accessing internet with a browser, but numerous ...
0
votes
1answer
53 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?
2
votes
5answers
3k views

Any real-time antivirus for Ubuntu?

Is there any real-time anti virus for Ubuntu? Which antivirus is good and in real-time (I mean that, if I try to open an infected file or go to a bad website, it stops it). I read a post in ...
28
votes
2answers
2k views

Should security updates always be installed?

We are a small shop, with no real sysadmin. So developers (Java EE) also try to maintain Ubuntu server 12.04. When I login a terminal and I see messages like: 6 packages can be updated. 6 updates ...
20
votes
2answers
350 views

Is the meta-release upgrade (do-release-upgrade) secure?

I am trying to understand the do-release-upgrade process i.e. the way that Ubuntu prompts me to upgrade to the next spring or autumn Ubuntu release. After reading the sources for ...
0
votes
1answer
34 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 ...
0
votes
0answers
37 views

Secure a samba print server in 12.04

I set up a sambda server on my router, and can access it with ubuntu. I installed the following applications to see the share: $ sudo apt-get install samba samba-common system-config-samba ...
13
votes
2answers
268 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 ...
2
votes
2answers
153 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 ...
1
vote
3answers
422 views

Tripwire local passphrase doesn't work, how do I reset it?

my tripwire local passphrase does not work any more (no idea why) and I want to reset it. How can I do this? I still have the system passphrase (hopefully) Open Source Tripwire(R) 2.4.2.2.2 built for ...
10
votes
2answers
6k views

chkrootkit says /sbin/init is infected, what does that mean?

I recently ran chkrootkit and got the following line: Searching for Suckit rootkit... Warning: /sbin/init INFECTED What does this mean exactly? I heard this was a false positive, ...
0
votes
1answer
16 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 ...
2
votes
2answers
53 views

PDF security problem

I'm looking for a program that allows me to export a document to PDF safely, so that other users can open it but can not copy or print its contents. While I used Windows I used PDF printers such as ...
1
vote
1answer
126 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 ...
4
votes
2answers
16k views

How to disable IPv6 permanently?

How can we disable IPv6 system wide via terminal commands? I've read editing /etc/modprobe.d/aliases and replacing: alias net-pf-10 ipv6 with: alias net-pf-10 off alias ipv6 off Is this safe ...
1
vote
2answers
68 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
64 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 ...
11
votes
3answers
41k views

What are the Major Differences between Ubuntu 12.04 and 12.10 in terms of Security? [closed]

I use Ubuntu 12.04. Recently, 12.10 was released. I'd like to upgrade but I want know what the benefits are in using Ubuntu 12.10 over Ubuntu 12.04 first. My requirement is here Security , is there ...
0
votes
0answers
46 views

How do I get a list of connected IP's without having root access?

I've become a target from a hacker that I have encountered in a video game. I have become a target of relentless attacks from multiple directions. As a countermeasure, I've installed UFW and have ran ...
0
votes
1answer
222 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 ...
15
votes
4answers
13k views

Which free VPN providers support Ubuntu?

Can't find any free VPN provider for Ubuntu. I tried looking into old questions but they seem to be outdated.
3
votes
1answer
3k views

How to do quarantine or delete with ClamAV?

I scanned the home directory using ClamAV which found 13 threats. The list was also displayed, but when I tried to delete or quarantine files, it did not proceed. Any ideas?
37
votes
7answers
10k views

What is the Ubuntu “built in virus protection”?

At ubuntu.com there is this "only in ubuntu" that says "Built in virus protection": What is the Ubuntu built it protection? What is the program in charge of this and how does it work?
0
votes
1answer
68 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??
2
votes
1answer
76 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 ...
1
vote
1answer
54 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
197 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 ...
1
vote
2answers
220 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
votes
2answers
46 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 ...
33
votes
6answers
40k views

Is there a way to password protect individual folders?

Let's say that I have a folder, within my Documents folder, that has files I want no one to access without a password. Is there a way to lock down that folder so that it's password protected / ...
0
votes
0answers
143 views

[SOLVED]Unable to installing Intel 5100AGN driver on Ubuntu 13.04 for Wifi Cracking

I am new to Linux and wanted to know if my wifi adapter has packet injection capabilities. When I try it on Ubuntu 13.04 it says my adapter does not support packet injection. But when I used Ubuntu ...
0
votes
0answers
20 views

How do I verify signatures of Windows software in Ubuntu?

I'm used to checking signatures in Windows for software before I install it. I'm unable to find a way to do it in Ubuntu under wine. Without signature verification it's very hard to find out if the ...
3
votes
1answer
188 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 ...