a technological barrier designed to prevent unauthorized or unwanted communications between computer networks or hosts
15
votes
5answers
3k views
Is there a preinstalled or automatic firewall?
Does Ubuntu come with a preinstalled or automatic firewall? If not, do I need one?
I've read some articles about the advantages of linux over other operating systems about security (no need to have ...
20
votes
4answers
4k views
Why is the firewall disabled by default?
Why is ufw firewall included in Ubuntu, when it is not enabled and pre-configured by default? Most users don't even know it is there, because no GUI frontend is provided.
9
votes
6answers
6k views
How to control internet access for each program?
I would like to use a software to control which program may connect to the internet. I know that this behaviour is associated with the word "firewall", but some Linux users are very upset if somebody ...
10
votes
7answers
2k views
Alternative to Little-Snitch app-firewall?
I'm trying out Ubuntu. Been a Mac user. I like ubuntu a lot but I'm uncomfortable not having an app-firewall that reports what connections are being made to the internet. I find it unnerving to not ...
2
votes
1answer
2k views
MySQL server not accessible from remote machine
I have installed MySQL server in my local Ubuntu server (11.10). I can't connect to the server from a remote machine.
When I tried:- nmap localhost
, It shows the following
PORT STATE SERVICE
...
5
votes
4answers
6k views
What rules to use for UFW?
I've decided to enable the UFW that comes with Ubuntu just to make my system even more secure (especially after watching a video of a person whose computer actually got infected!), and I've enabled ...
1
vote
4answers
1k views
Ubuntu One does not sync: firewall settings?
I'm new to Linux. I installed Ubuntu 11.04 on a partition and I love it, but Ubuntu One does not work. I created a free account and a directory Ubuntu One appeared automatically, as expected. I copied ...
42
votes
8answers
2k views
What are the risks of NOT using a firewall (home computer)?
Since a password is required to be a superuser (to install and modify programs), what are the risks to not use a firewall under Ubuntu ? More particularly if I am using a NAT router ?
12
votes
1answer
4k views
How to block internet access for wine applications?
Is it possible to prevent specific wine applications or any wine application from accessing the internet? When using certain apps under Windows, they were trying to access the internet from time to ...
9
votes
1answer
492 views
Precautionary security measures for a home user? (firewall, antivirus, etc)
I just recently made the switch from Windows to Ubuntu, and I'm just a little paranoid when it comes to security measures.
I've looked around and from what I've read, security is not as big a concern ...
7
votes
1answer
420 views
Getting Dynamic firewall from Fedora 15 into Ubuntu?
Just tried out Fedora 15 and noticed the pre-installed firewall application that I found much easier to use than any other previously tried out firewall manager.
Definitely miss it at my Ubuntu ...
4
votes
1answer
6k views
System log error when running Firestarter configuration program
Running latest Ubuntu ver. 11.04. Using Firestarter firewall configuration (ver.1.0.3). When Firestarter is run, an error message is returned, "Failed to open the system log. No event information will ...
5
votes
2answers
6k views
“FirewallD not running” error when trying to install a printer
When trying to add my printer in a fresh install of 11.10 I get this error message. What does it mean, and what do I have to do? It worked fine in 11.04 (with hplip).
4
votes
1answer
92 views
blocking all outgoing ports and its consequences
Is this the right way to block all outgoing ports? : ufw default deny outgoing
But what are the consequences of doing this on amazon ec2?
I'm running possibly unsafe perl scripts on my instance and ...
4
votes
3answers
567 views
How can a non-geek set up a proper firewall?
Maybe a non-geek that knows of the existence of a firewall is already some kind of a nerd. If you have been a windows-user then it was rather easy to set up a firewall (I don't know if it was a good ...
3
votes
6answers
2k views
UFW firewall still blocking SMB despite adding rules
I have an Ubuntu PC with ufw firewall (GUI version). I have added the preset Samba service, in and out, and even tried adding the ports manually (135-139, 445, UDP and TCP, in and out), but it still ...
2
votes
1answer
189 views
Which port does Ubuntu Software Center use?
I have installed the gufw firewall utility and want to make a whitelist of ports (want maximum security, but whitelisting single IPs is currently too tedious). I have so far only entered ports 53 (for ...
1
vote
1answer
155 views
How do I use “ld_preload” to control what apps can and cannot connect to internet?
I'm trying out Ubuntu. Been a Mac user. I like ubuntu a lot but I find it unnerving to not have any control over what apps can & cannot connect to the internet. I was advised that "ld_preload" can ...
1
vote
1answer
782 views
How can I set up GUFW so that only firefox connects to the internet
I only want http, https and DNS to be open.
I'm having troubles with setting up port ranges in the UFW GUI. How do I input configs into the feilds?
Basically, something along the lines of this, but ...
0
votes
1answer
354 views
Best & The Most Secure UFW Configurations? [closed]
I've looked in these two (1 & 2) Qs&As but didn't find an accurate and simple answer...
I'm on a variant of Ubuntu 10.04 and I want to configure my firewall in a way that it couldn't be ...
0
votes
1answer
311 views
Ubuntu Windows Installer - Firewall
I installed Ubuntu with the Windows installer to use it along side. I could not find anything to activate a firewall so I thought its inbuilt and running. However now I read that I have to activate it ...
0
votes
1answer
830 views
How to configure Firewall
How can I configure firewall for what I use as a web development server. I should be blocking all ports except 80 (HTTP), FTP, SSH? I tried configuring using ufw, gufw, firestarter but I ended up ...
