A firewall is a piece of software that controls what connections can be made to and from a network.
37
votes
7answers
13k views
Why does the Mac OS X firewall dialog recurringly pop-up and disappear by itself (without letting me respond) under Snow Leopard?
From time to time, I'll be on my Macbook using a program that accesses the network – whether Firefox, or Sony's Reader Library – really, it seems like it could happen with any program that ...
23
votes
4answers
9k views
How can I configure the Windows 7 firewall to prompt me on outbound traffic?
Can I configure the built-in firewall in Windows 7 to ask me if I want to let a program open an outbound connection?
I can disable all outgoing traffic and manually create rules for programs, but I ...
17
votes
7answers
16k views
“iTunes.app” to accept incoming network connections?
Every time I open iTunes I get the the following warning:
Do you want the application "iTunes.app" to accept incoming network connections?
Clicking Deny may limit the application's behavior. ...
13
votes
3answers
2k views
How to setup a work -> home -> internet http tunneling service
I want to know which program is recommended in order to setup such as scenario, i.e. accessing the Internet from work or other places where traffic is monitored by installing a HTTP tunneling service ...
12
votes
5answers
4k views
Does the Virtual PC XP Mode need safety measures?
Does the Virtual PC XP-Mode (or any other virtualized mode) require safety measures, such as antivirus or a firewall?
I'm just wondering if the XP-Mode would be a large security loophole, since it's ...
11
votes
4answers
12k views
Changing network type from Unidentified network to Private network on an OpenVPN connection
Is it possible to change the connection type in Windows 7? I have a OpenVPN connection which is identified as "unidentified network" and I do not want to apply certain rules to all unidentified ...
10
votes
6answers
35k views
What's the closest equivalent of Little Snitch (Mac program) on Windows?
I'm using Windows 7 and would like to have a feature like Little Snitch on the Mac that alerts you whenever a program on your computer makes an outgoing connection.
Description of Little Snitch from ...
10
votes
4answers
12k views
Which ports to open for Microsoft SQL Server?
Having searched the internet a few times on the best way to open up SQL Server connectivity through windows firewall i've yet to find a best way of doing it. Does anyone have a guaranteed way of ...
10
votes
4answers
4k views
SSH access to office host behind NAT router
I would like to access the ssh port of my office linux host from home. Unfortunately the host is located behind a NAT router. So, the IP address is not publicly available. There is however access to ...
9
votes
5answers
6k views
With Linux iptables, is it possible to log the process/command name that initiates an outbound connection?
I would like to keep track of the processes that initiate outbound connections on a Linux desktop. The best I can come up with is this:
iptables -A OUTPUT -m state --state NEW -j LOG --log-uid
This ...
8
votes
7answers
2k views
Do I really need a firewall?
I've been using the Nod32 security suite for some time now, and out of all the others that I've tried, it's great (low memory footprint, fast, fairly cheap). However, I've been installing a lot of ...
8
votes
4answers
32k views
What are Inbound and Outbound Rules for Windows Firewall?
Can anybody explain what are the inbound and outbound rules regarding Windows Firewall? What is their significance? Are they useful even when Windows Firewall is off?
8
votes
4answers
4k views
How do I block all outgoing ports in Windows XP firewall?
The built-in Windows firewall seems to only block incoming ports, but not any outgoing traffic.
I am looking for an application to install on an xp machine which can be configured a way to block ...
8
votes
4answers
3k views
Windows tool to find out which port an app is trying to use?
I am guessing that netstat shows apps and their ports that already have a connection and it doesn't show or can't show an app that is trying to open a connection.
If I have an app that's trying to ...
8
votes
2answers
13k views
How to block all traffic but one IP in Windows Firewall?
I'm trying to use Windows 7 firewall to block all outgoing and incoming traffic, from all IP's and for all protocals, except for UDP to and from one particular IP address.
The reason why is because ...
7
votes
4answers
1k views
Is the Windows XP firewall good enough?
I used to use a third-party firewall like ZoneAlarm and some others whose names I forget, but their complexity ended up annoying me. Assuming one runs his computer as a normal user/powersuser, is it ...
7
votes
4answers
40k views
How can I block a program from accessing the Internet?
I really want to know how can I prevent a program to connect to Internet with Windows 7 firewall?
I have smart security nod32 business edition installed on my computer.
should i do this job with ...
7
votes
3answers
553 views
Safe access to my home network subversion repository
I have a subversion server setup on my home network (windows).
I'd like to open a port in my router/firewall and allow access to it from the net. What do I need to do to make sure I don't put both ...
7
votes
3answers
746 views
Is Windows Firewall / Antivirus good?
I was wondering if I should let Windows Firewall and Antivirus take care of my system's health. Should I consider buying a paid version of another antivirus/firewall (Norton, AVG)?
6
votes
7answers
26k views
Apache Server on Windows 7 opening up ports?
I have installed Apache 2.2.14 on Windows 7 and can view my web pages using both http://localhost and http://127.0.0.1 but when I try to access the server from another computer on the same router, it ...
6
votes
6answers
1k views
Is it safe to put a Mac directly on the internet?
In the past I have always run a NAT router between my Windows PC's and the internet. I'm wondering if I still need this or whether the OSX firewall is good enough to let me put a Mac directly on the ...
6
votes
5answers
3k views
Is the firewall in the wireless router enough?
I got an ADSL internet connection that goes into a Linksys wireless router that features a built-in firewall. Are those kinds of firewalls typically good enough for regular use, or should look into ...
6
votes
8answers
67k views
How to bypass web URL filtering service to access blocked websites (proxy)
I'm using network, where services such as Gmail or any other e-mails, Google Drive, Dropbox, all social networks are blocked.
Basically my goal is to access simply GMail, but I couldn't find any way ...
6
votes
4answers
2k views
Do I need a third party firewall for Windows 7?
I have always used third party firewalls (Zone Alarm) to avert attacks and to prevent installed softwares (like Adobe Updater) from connecting to internet. Unfortunately, when I migrated to Windows ...
6
votes
3answers
1k views
Parental control or outbound firewall?
Based on the Age distribution of Stack Overflow users some of you might also have kids in the ages when certain images can be very disturbing. An age when they cannot yet decide by themselves what ...
6
votes
2answers
912 views
SSH Tunnel doesn't work in China
Last year I was working in China for a few months. I never bothered setting up a real VPN, but just created a SSH tunnel, and changed my browsers proxy settings to connect through it.
Everything ...
6
votes
2answers
906 views
How can I set up a webserver behind two routers?
I realise that this may be better suited to ServerFault, but this is my home network that I run in a non-professional enviroment.
At home I have my main router connected to the internet which the ...
6
votes
2answers
126 views
Open up firewall automatically to anybody who has successfully connected via SSH
I have a server which runs a few services. However, for security reasons, I configured the server so that nothing, except for SSH, is accessible from outside.
What I'd like to do instead, though, is ...
5
votes
3answers
6k views
Google Chrome being blocked by company firewall
Yesterday I could use Google Chrome at work to access the internet and today it is being blocked by the firewall with an access denied error. IE and Firefox work fine from the same machine. Is there a ...
5
votes
3answers
256 views
Do I need a software firewall?
I have a router, that has built in hardware firewall capabilities, do I need to install an additional software firewall on my Windows 7 PC like ZoneAlarm?
5
votes
8answers
2k views
Outgrowing Linksys WRT54G router
Looks like the WRT54G is no longer adequate for our needs. At first with only a 2-3 people on the router it was ok, but now with more people and devices it's just no longer reliable. Crashes almost ...
5
votes
2answers
176 views
What alternatives exist for Zone Alarm?
I like having Zone Alarm to warn me when programs are trying to phone home / request for updates etc.
However, I feel its interface is a little clunky and was wondering if there are any alternatives ...
5
votes
3answers
10k views
How to prevent a file from accessing the internet
There are some exe and dll files belonging to some programs on my laptop which communicate with the internet without my permission (for self-update generally). I want to prevent those files one by one ...
5
votes
4answers
2k views
Tools to monitor hack attempts/port sniffing
What tools are available that allow me to monitor if someone is using a port sniffer on my computer and/or display any possible hacking attempts? I'm using OneCare, but the firewall information is ...
5
votes
8answers
12k views
Internet connection under Windows Vista stops working until reboot [closed]
I have a fairly clean Vista Home Premium SP1 install on my desktop. There aren't many applications installed. My Internet connection always seems to stop working after web surfing for a while - ...
5
votes
2answers
1k views
VPN/Tunneling (SSH or otherwise) on Windows via HTTP proxy
Situation.
... +-- Computers
(to the internet) | |
- [ router / firewall ] -- [ switch ] +- [ switch ] -+-- ...
5
votes
1answer
390 views
Rackspace Firewall/Gateway Setup
I have rackspace account and wish to have this sort of setup:
Firewall/Gateway
eth0 - Public IP (56.X.X.X)
eth1 - Private IP (10.X.X.X)
Ubuntu 10.10. Accepts connections from the internet and ...
5
votes
2answers
598 views
Cookies blocked by router?
My friend has a D-Link DI-524 router that she uses for her home broadband. It's a pretty vanilla setup with the standard firewall settings, DHCP enabled etc.
However, recently she has experienced ...
5
votes
1answer
480 views
Remote Desktop access Windows 7 system from Windows 8
I have 2 windows systems...
Windows 7 (192.168.2.8)
Windows 8 (192.168.2.9)
Both are connected to WiFi router. They have been assigned address 192.168.2.8 & 192.168.2.9 respectively. I have ...
4
votes
9answers
2k views
Force web address to go through HTTPS
At my work, http://twitter.com is blocked, but https://twitter is not. Is there any way to have all programs/browsers access this URL using the HTTPS protocol instead of HTTP?
This specifically ...
4
votes
6answers
705 views
Standalone firewall + antivirus or combined security tools?
For years I'm using some antivirus software and different firewall. Now every antiviruses have got some firewall features and there are complete "internet security" complexes... and every firewall get ...
4
votes
8answers
199 views
Corporate site filter
Alright so my work blocks a bunch of websites for obvious reasons. They even blacklisted logmein.com so thats out. I feel that I am capable of getting all my work done AND keeping up with my warfish ...
4
votes
4answers
1k views
If I use an SSH tunnel to get around a firewall, what does the sysadmin see?
I use an SSH tunnel for the port my browser uses to access the internet. The result is I get around the firewall my network uses, which prevents me from using many sites I want to use (facebook, ...
4
votes
3answers
494 views
What are the most common dangerous domains that I should block?
I am trying to configure my wireless router to block domains that are potentially dangerous to privacy, security, and bandwidth-hogs. Is there a list of domains that I can block at the router level? ...
4
votes
1answer
270 views
How did Google get on my Mac?
Am running a MacBook Pro, and have never installed Chrome, Google Earth, or anything blatantly Google.
Just installed Little Snitch (are there no good free firewalls for Mac?) and see that CURL is ...
4
votes
4answers
2k views
Utility to open TCP port to listen state
Is there some basic utility to open a specific network TCP port on my machine?
I need to test how my program deals with ports on listening state..
4
votes
2answers
2k views
If I use a proxy server, can my computer bypass the ISP?
If somebody is using some kind of proxy server to connect to the internet, does their computer connects to the ISP first and then to the proxy server, or does it connect to the proxy server first and ...
4
votes
3answers
121 views
Is there specialized software for testing the security of a computer?
I'm trying to secure my computer against local network attacks for when I'm at university or a LAN party.
Although my dad's computer store is also running a Windows Server so it might be handy to ...
4
votes
2answers
1k views
Configure OSX Firewall to Allow SSH Server?
If I turn on my OSX firewall, ssh is disallowed. If I turn it off, ssh can connect just fine. These are the settings from the ssh host: while I don't know what I'm doing, I figured that giving ...
4
votes
3answers
110 views
Is there a respected AntiVirus and software firewall app that doesn't invade your privacy?
I recently purchased ESET's AV and firewall software suite. I know it to be a respected app but when reading the license while installing they made it clear that they will collect not only information ...
