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

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How vulnerable are you by installing a desktop on Ubuntu Server? [duplicate]

I've read around that installing an Ubuntu desktop on top of an Ubuntu Server provides security holes and performance issues. But I can't find anywhere as to describe what security holes would develop ...
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1answer
235 views

How to protect my PC from netcut users? (ARP spoof)

In my campus, some people they are using netcut in Windows and they are blocking us not to use Internet. Since I am a Ubuntu user, I can't install neither nutcut nor netcut-defender to protect and ...
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3answers
244 views

do i need an antivirus?will mcafee work on ubuntu? [duplicate]

i want to know if mcafee anti virus and firewall will work on ubuntu 12.04.3 if not what is recommended. i have noticed web pages locking and reporting FBI Virus, if ubuntu is safe how does my browser ...
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1answer
89 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.
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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 ...
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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 ...
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0answers
248 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 ...
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197 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 ...
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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.
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2answers
128 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 ...
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1answer
77 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 ...
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1answer
52 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?
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1answer
33 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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0answers
36 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 ...
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1answer
80 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 ...
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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?? ...
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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: ...
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2answers
149 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 ...
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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 ...
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1answer
120 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 ...
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1answer
62 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 ...
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2answers
66 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
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 ...
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1answer
219 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 ...
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1answer
67 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??
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2answers
263 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 ...
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1answer
53 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?
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2answers
194 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 ...
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2answers
197 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 ...
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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 ...
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3answers
270 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.
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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 ...
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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 ...
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3answers
9k 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 ...
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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 ...
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0answers
187 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 ...
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1answer
337 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 ...
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2answers
49 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 becouse they are connected ...
0
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1answer
53 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
83 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 ...
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2answers
349 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 ...
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0answers
20 views

Is it possible to have secure LTS in Ubuntu?

I thought that I would be able to enable & support php5-suhosin in a 12.x server by enabling the ‘universe’ repo but now understand that the stuff in Universe isn't supported for Ubuntu's LTS ...
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1answer
133 views

Two-factor authentication on Ubuntu One

Is there a way to enable two-factor authentication to access my Ubuntu One account?
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2answers
340 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 ...
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3answers
70 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 ...
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0answers
86 views

AutoMySQLBackup - how to store username / password

I'm trying to setup AutoMySQLBackup on Ubuntu 12.04.3 LTS in security conscious manner. I've setup a mysql user with minimum privileges for backups. But when installing AutoMySQLBackup from apt-get ...
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2answers
176 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 ...
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3answers
204 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 ...
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187 views

Get root access to an ubuntu server

Hacking doesn't really interest me (You're not allowed to brag about what you've achieved!) but I still don't want to neglect server security. Is there a good book, tutorial or document on hacking an ...
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1answer
34 views

Can't work out security [closed]

I installed Ubuntu on puter I am the only user I alone use. I was trying a to find out how to repair hardware faults. Surprised to find I was not the owner and that there is a password that locks me ...