A firewall is a piece of software that controls what connections can be made to and from a network.

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Deny all incoming connections with iptables?

I want to make some simple iptables rules to deny all incoming connections and allow outgoing. How can I do that?
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1answer
9k views

OSX Lion, open a local port so people on my network can access it

I'm running django's simple HTTP server (using python manage.py runserver). It's currently running on port 8000. How can I open a port on my macbook and allow network traffic to visit my host on ...
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1answer
186 views

How to I allow outside access to port 8080?

I'm trying to add a rule to my router to allow outside access of a web app running on one of my computers on port 8080. When creating a rule, my router (actionTec) asks for three fields: "Port ...
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1answer
319 views

Is my Windows Firewall active?

I'm trying to set a simple public block for an application for both inbound and outbound connections. I'm using Windows 7, but my friend is still able to connect to the application. Steps I took are ...
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3answers
110 views

Detect URL connection attempt by desktop application

A user is using Autodesk Project Vasari 2, which provides training videos. The videos are blocked by the corporate firewall. Is there a method I can use to find out what URLs the application is ...
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3answers
147 views

Granular control of the flow of data into and out of all devices on a home network to an ISP enforcing bandwidth limits

Internet service providers are gradually chipping away at net neutrality and imposing bandwidth limits. Most users will need to trust their ISP to report accurate bandwidth consumption rates, and ...
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1answer
439 views

Firewall for controlling network traffic

I'm wondering if it is possible to have a firewall on Windows 7 that can only allow network traffic to one IP address, and from that one IP address? I'm using a VPN that tunnels all my internet ...
2
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1answer
92 views

stop windows 7 complaining about the firewall

Is there a way to stop Windows 7 complaining about the fact that ive turned the default firewall off. Whilst i am on my home network i dont want to run the windows firewall as im behind a router, but ...
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3answers
895 views

Firewall to block traffic to specific websites

I have recently switched from MAC to Windows Vista. I used to have LittleSnitch on Mac where I can create filters and disable browsing to other websites. I mean, I can create filters so that ...
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1answer
79 views

Unable to access internet from Windows Command Processor

I am unable to access internet from the Windows Command Processor. Below is the output on doing a simple ping: C:\Users\vivekkumar>ping www.stackexchange.com Pinging www.stackexchange.com ...
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what does “-m tcp” mean in this iptables rule?

Firewall configuration written by system-config-firewall -A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT
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How to show the firewall log on a mac (Mountain Lion)?

Where do I find firewall log on mountain lion 10.8.2? I have a problem with refused connections and I want to see if the firewall prevents me from connecting.
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780 views

how can I allow outgoing access to a port in firewall

Im doing a file_get_contents but getting Connection refused I used the following to allow outgoing connections from server2 to server1, and vice-versa. But I'm still getting failed to open stream: ...
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1answer
1k views

Completely disable internet connection except for browser and bittorrent

I need a simple software that ideally needs minimal configuration that will completely block all incoming and outgoing internet connections on my computer, with the exception of a browser (Firefox) ...
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1answer
422 views

Manually allow ping.exe through firewall

To improve my feeling of security I recently switched my windows 7 firewall to block all outbound connections. The only thing I can't seem to get to work is ping.exe. I tried by creating custom rules ...
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1answer
2k views

Block IPv6 Traffic using iptables on Linux using Layer 2 info

I have setup a simple isolated network consist of following Linux based machines: Node1<---->Router<---->Node2 Router's eth0 is connected with Node1's eth0. Router's eth1 is connected with ...
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2answers
64 views

Certain banking pages not loading

For some unknown reason, I am suddenly unable to access my accounts at several banking and credit sites. I have been a registered user at each site for several years and know I am using the correct ...
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1answer
2k views

How to append netsh firewall rules, not just replace

I am using a script to set firewall rules in netsh. netsh.exe advfirewall firewall set rule name="Block External IP's" new remoteip="$($ipArray[0])" I thought that set was used so that it would ...
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2answers
587 views

Home Network, VPN & Security

At the moment, my home network is comprised of 5 computers (3 laptops and 2 desktops), one of which is running Windows Server 2008 and works as a home repository for some of our files. We access the ...
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1answer
1k views

Kaspersky 2012 Firewall - prompt on new connection attempts

How can I get Kaspersky 2012 Firewall to ask me everytime if I want to allow or deny an application to connect to the internet the first time it asks and have it remember that until the application ...
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2answers
681 views

Wake On LAN on request

I have a small home network with the router capable of running OpenWRT, is there some utility or firewall rule, which can be used to Wake On LAN on request. What I think - if I want to access my media ...
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1answer
5k views

What router settings are required for Windows 7 Remote Assistance?

I want to connect to someone's PC using Remote Assistance in Microsoft Messenger. Both PCs run Windows 7. The remote user is the one initiating the request. We're both behind firewalls/routers ...
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2answers
381 views

Tracing what program is making a network connnection? (CentOS)

I was wondering if it is possible to find out which process is trying to make a specific network connection. On a server I support which hosts websites for about 200 users, the iptables firewall keeps ...
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1answer
1k views

How to block access to a website on Lucid Lynx?

I am trying to block a few websites on a lucid lynx, I tried editing /etc/hosts and that blocks access via url but the site still open if I enter the ip on the browser, how can I block ip access also? ...
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5answers
122 views

Software and hardware firewalls

I'm connecting to the internet through a router at the moment, a Linksys WRT54G, do I need to have a software firewall set up? It seems kind of redundant if you're never going to directly connect to ...
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3answers
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Is there any Linux firewall like ZoneAlarm, Keiro or Comodo in Windows environment? [closed]

Is there any Linux firewall like ZoneAlarm, Keiro or Comodo in Windows environment? I like to to able to monitor and block any Linux program from making in/out TCP/UDP connections on per application ...
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How to automate Checkpoint firewalls rules implementation?

I HATE CP with a passion beyond belief... I mean, why, WHY you couldn't include a command line interface that allows me to grep a CSV file in which I'm requested rules, format them properly and then ...
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1answer
40 views

Does Windows Firewall have a log?

I am trying to set my router to forward three of my ports for EchoLink. But I'm having trouble with it. I'm Using the PFPortChecker to see if the ports are open, it says they aren't, but to check my ...
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2answers
864 views

Filezilla connection - port blocked?

Since this morning I am unable to make a update with many files (i try to update the piwikinstallation, requires me to upload about 24mb). After a while, filezilla gets the answer from server, that ...
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2answers
123 views

Keeping a slowish DSL connection responsive

I have a Linux box serving as a firewall/router for our home network. I live out in the boonies, so I have a relatively slow broadband connection: Downstream Rate 7616 Kbps Upstream Rate 512 ...
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1answer
120 views

SSH tunnel and firewalls

Can a firewall still block things off a tunnel going trough it ? I am testing my proxy with Dante in China and works flawlessly but I have the same config on a proxy in Ireland that goes trough a ...
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1answer
313 views

Although my firewall is off, I cannot connect so some ports on my mac (Mountain Lion)

I have a mac-mini (Fall 2009) with OS X 10.8.4 on my local network and I am running a simple http server on port 5000 (or any other port). I have turned the firewall OFF. I can connect to the mac via ...
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1answer
210 views

Is there a HTTP proxy server that uses another proxy for certain sites (in black list) and access directly otherwise?

Some websites are blocked in my network, so I have to use a proxy outside my local network to access them. In order to maximize the speed, only blocked sites be accessed through proxy. Currently, my ...
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Work firewall blocking Gmail IMAP port

My work has a very over protective firewall. We use Google Apps for our email and so can access the web interface just fine. I use my laptop at work however (MacBook connected via WiFi through my ...
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1answer
549 views

PureFTPd is using ports above 50000 even with PassivePortRange specified

I have installed the pure-ftpd package with PureFTP 1.0.24 on Ubuntu 10.04 using apt-get. Even though, this is the default port range, I've added the file /etc/pure-ftpd/conf/PassivePortRange ...
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1answer
221 views

Accessing a site using websocket behind University gateway

I'm trying to access lichess.org from the university network. I can access the site but when I try to join/launch a game, I keep getting reconnecting message. I emailed the admin and he told me they ...
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1answer
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Blocked outgoing SMTP socket connection in Windows

I have a private email sending application (Windows), which sends email notifications over SMTP protocol. This might look like a code question for StackOverflow, but it is not. The application works ...
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1answer
3k views

How to quickly Enable/Disable Internet Traffic so that it ONLY goes to ONE program?

What Firewall program (preferably free) can I use to quickly enable/disable internet traffic so that it only goes to one program? For example, sometimes I need only one program (Program X) to be ...
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1answer
338 views

Accessing my Rails webrick behind proxy?

In my mackbook, when I try to connect to my rails application in office I can't , in the office there are some http proxy , and when I run my rails like this : sudo rails s -p8080 => Booting ...
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3answers
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How to firewall a VPN connection in Windows 7?

I have a VPN connection to a private VPN server in another country. I don't want any internet packets to leave or enter my laptop unless they are going to or coming from the VPN server's IP. Is ...
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1answer
444 views

Remove Windows Firewall requirement for adding printers

Is there a way to remove the requirement Windows 7 has to have the firewall enabled to add a shared printer to the computer?
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SQL Server Ports

The Microsoft website states The firewall must be configured to permit port 1433 incoming (or the port numbers that SQL Server listens to on TCP/IP), and ports 1024 to 65535 outgoing. Does this ...
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OpenVPN on a campus network?

I have my router at home running Tomato USB with OpenVPN running on port 1194. The campus network only has port 80 publicly open and I'm almost positive that they do traffic shaping and content ...
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3answers
5k views

iTunes Home Sharing only works one way between 2 Windows XP PC's on the same LAN

Both PC's have the latest iTunes installed. PC (A) can "see" that there is a shared library "B library" but attempts to connect to it return this error message: The shared library "{Username}'s ...
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1answer
596 views

What ports in firewall need to be open for allowing Mac Vine Server connection

I have a Mac with Vine server installed sitting inside the firewall (actually a router connect to cable model, and has a LAN to internal). What if I want to remote desktop to Vine server from ...
2
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1answer
654 views

Why would http & https be blocked, even in safe mode with firewall disabled?

I have a windows 7 machine (dell studio xps). Everything on it seems to be in working order. The network device says it has internet connectivity, and indeed I can ping websites, transfer files via ...
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2answers
2k views

Connecting together DIR-615 and DIR-655

On my DIR-655 my internal network is: 192.168.0.x On my DIR-615 my internal network is: 192.168.1.x They are both connected to my firewall PIX 501 box The PIX itself is connected to the comcast modem. ...
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3answers
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How can I scan from Canon PIXMA MX700 without disabling OS X firewall?

I have a Canon PIXMA MX700 connected by ethernet. When I first bought it I was using OS X 10.4, and scanner-initiated scanning worked fine. After upgrading to 10.6, neither scanner-initiated or ...
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4answers
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UFW as an active service on Ubuntu

Every time I restart my computer, and check the status of the UFW firewall (sudo ufw status), it is disabled, even if I then enable and restart it. I tried putting sudo ufw enable as one of the ...
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What might be causing specific IPv6 HTTPS servers to send an excessive number of RST packets?

Client browsers on my IPv6-enabled home network hang and time out when attempting to load https:// URLs from specific IPv6 sites, such as ones operated by CloudFlare. In those situations, the live log ...