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

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How to change your firewall preferences when you cannot login to Windows 7?

Here is a toughie. I just switched to a new computer at work and for some reason Firefox wasn't able to connect to the internet. So, I went into windows firewall settings in the control panel and ...
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1answer
66 views

Can't access service from external IPs

I have amazon EC2 instance. It has wowza server. All inbound connections in Amazon Security group for ports 1024-65535 are allowed. Yesterday Wowza stopped to response to connections from external ...
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1answer
34 views

internet access on natted server

I have two linux servers say X and Y. There is a VPN connectivity between the two, such that X can connect Y through some ports(e.g. 22,5901 etc) but Y can not connect X. internet is available on X. ...
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649 views

How do I open ports on an Actiontec MI424WR?

Visiting a friend who has Frontier FiOS internet and an Actiontec MI424WR broadband router, latest version. While their ethernet connection works for web browsing, they are experiencing what I believe ...
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1answer
267 views

How to uninstall outpost firewall pro driver?

I want to reinstall outpost firewall pro but encounter "setup has detected that outpost firewall pro drivers are still present in system. Please uninstall previous version, reboot, and run setup ...
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1answer
1k views

DNS resolving broken after installation of bind due to iptables

I successfully configured my web server (Apache, PHP etc.) and blocked the ports I don't need using iptables, which was working perfectly fine. Today, I installed BIND and configured it, which also ...
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1answer
1k views

How to bypass a firewall which asks for username and password [closed]

Here in my college we have a firewall installed by Fortinet. Whenever we open Firefox it asks for a username and password ... Once we enter that, accessing the internet is possible but with very very ...
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1answer
456 views

Port Forwarding / Open Port

I have a very simple problem, but the methods I've used in the past do not seem to be working in this case. I am attempting to teach myself network coding in Java, which requires connections between ...
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3answers
2k views

Temporarily block internet connection for a program

I'm developing an application which is supposed to work in 2 modes online and offline. I need a simple and fast solution to block the internet connection for this particular application. ...
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2answers
259 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 ...
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0answers
1k views

Windows 8 firewall blocks browser downloads

I have a curious issue with the windows 8 firewall. When using chrome and internet explorer for hotmail I can't download word or pdf attachments. I also tried to download adobe reader with with ...
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1answer
620 views

Filter multicast from WAN to specified vlan

I'm using ebtables to filter multicast IPTV from my Wireless and Wired Lan. Right now its configured like this: Router ( DD WRT ) VLAN1 (PC Network) VLAN2 (IPTV) I am using this command: insmod ...
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2answers
36 views

VPNs and Wireless Providers [closed]

Is there a way to know, tell or figure out what ports are blocked on mobile networks? I've had some issues using a VPN and just wondering if maybe that could be the cause.
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1answer
2k views

Connecting to SSH from behind an HTTP proxy

I'm behind a corporate network with an HTTP proxy. I also have an SSH server to reach on port 22. I don't have any kind of control over that server: I'm not root and even if I were I'm not allowed to ...
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1answer
233 views

OSX ML Let Firewall run Python without asking for permission every 2 seconds

I'm currently working on a website in Python, and I'm using pserve with --reload option that reloads the server every time a change in any of the Python files is made. Meaning every time I save any of ...
2
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1answer
191 views

How to simulate yourself as if you are located internally behind the trusted zone of a FW

I work in security operational center engineer in one company. We manage a lot of customer FW, proxy,..etc. An example of our daily tickets could be the user can't access some site, so we check the ...
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1answer
308 views

Wifi router + ADSL modem: Where to run the firewall?

I've just bought an Asus RT-N66U wifi router which connects via the WAN port to a TP-LINK TD-8817 ADSL router and on to the internet. The Asus is set up to do DHCP etc and can be considered the ...
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1answer
354 views

Blocking the unwanted Web Traffic [closed]

There are some trackers most of the times you could see they are running on your PC, Dependent on the softwares, services, Addons, OPSys, ... much more some of the major trackers could be 'Google', ...
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147 views

How to unblock jabber on TI ADSL router with iptables

I have old but reliable Texas Instruments ADSL router. Board AR7RD; BUILD=061005; VERSION=3.7.1 If that matters... One thing that bothers me is that it somehow blocking my jabber (Pidgin ...
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1answer
2k views

How to allow Dropbox to auto-update by adding an exception to ESET firewall?

I am using ESET Smart Security v5.2.9.1 and Dropbox at Windows 7 x64. The problem that I am facing is that every time Dropbox wants to auto-update, it downloads an updater file that has different ...
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1answer
45 views

How to know which firewall is used? [closed]

System is ubuntu. gufw was not installed and after I installed it then shows firewall is disabled. But firewall IS definitely there.
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1answer
647 views

Unable to connect to computer on local network although internet connection is working fine

I am having difficulty connecting wirelessly to my Linux computer with my Android mobile device. I have disabled the internal firewall of my computer and opened up access to it with port 80 on my ...
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2answers
3k views

Cannot connect to my mac via SSH

I want to open a connection to my mac (10.8) via SSH. An SSH-server is installed by default on OSX. Remote login is enabled, so the service is running and I can connect to to localhost via ssh. ...
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0answers
461 views

How do you allow a specific IP Address to bypass your firewall. OS X

Well, my young cousin really likes minecraft. He comes over and spends time with me every now and then. When he does, we usually play minecraft, as it is one of the few games I actually like. Anyway, ...
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1answer
3k views

OpenVPN Windows Server 2008 R2 Enabling NAT

I want to redirect all traffic through the VPN. - server.ovpn: port 1200 proto udp dev tun ca "C:\\Program Files (x86)\\OpenVPN\\config\\ca.crt" cert "C:\\Program Files ...
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0answers
312 views

How can I get Apache on OSX 10.8 to serve up a directory under a user home directory?

There might be more than one problem here, but I got my Mac back from the shop after the hard drive was failing, and the new hard drive reproduced my home directory but not httpd.conf. Since I have ...
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0answers
45 views

GUI tool for presenting connectivity status on a firewalled network with port blocks etc

The Israeli railway company has recently started a project of wireless LAN availability on its lines. Now, it's all in the flakey stages, sometimes things are up and sometimes they aren't; sometimes ...
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1answer
228 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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1answer
72 views

windows prevent app from accessing internet

I bought a desktop password management application and I want to make sure it is secure and doesn't send any data to the developer. So I want to block it from using the internet. I am using Windows ...
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1answer
527 views

how to telnet redirect ip and host using iptables

I try to telnet from PC 3 To PC 1 and it's redirect to PC 2 PC 1 : 192.168.0.1 PC 2 : 192.168.0.2 PC 3 : 192.168.0.3 i have command like this in PC 1: iptables -t nat -A PREROUTING -p tcp -d ...
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2answers
162 views

Which Port And Protocol Is Being Blocked

I wrote a .NET program to make an HTTP request over the Internet, and it's being blocked by my PC's firewall. The operating system being used is Windows 7. I figured I could create an outbound rule ...
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2answers
1k views

Nmap showing 113/tcp closed ident for every IP

I'm trying to find a free IP address on a network that doesn't use DHCP. I decided to run an intense scan using Nmap from 10.0.5.0 to 10.0.5.255. (I know this isn't the best way to find an unused IP ...
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1answer
661 views

SSH, SVN and firewalls

I have a typical set up where by my SVN server is on a machine behind the firewall and I have a gateway machine which I can SSH into. When outside the network if I want to checkout the repository I ...
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2answers
6k views

openvpn port 53 bypasses allows restrictions ( find similar ports)

scenario of wifi : i'm using wifi in hostel which having cyberoam firewall and all the computer which uses that access point. that access point have following configuration default gateway : ...
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1answer
1k views

Vyatta DHCP relay is not relaying replies correctly in bridge

I have DHCP server (dnsmasq) on LAN network that has IP 192.168.255.2/16. Now I've created bridge on Vyatta that combines LAN and WLAN networks. Both NICs are on promiscuous mode in ESXi. If I put ...
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0answers
751 views

Firewall blocks ICMP even with Allow rules, even when disbled

Sometime early October (right after update Tuesday???). My Window 7 home machine stopped responding to anything incoming. Effectively breaking iTunes, Sonos, TiVo Desktop, RDP etc. But all those ...
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3answers
2k views

Mac firewall blocking nginx (port 80) from external side

I installed nginx using ports and started it with sudo. Accessing the nginx welcome page from localhost works perfectly, however accessing it from an external computer fails. Doing an nmap on the ...
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0answers
4k views

Connection refused (WSAECONNREFUSED) OpenVpn connecting refused by server side

OpenVpn Gurus, I successively configured my Openvpn server.ovpn and client.ovpn files and all other required certification files. And I could load them on my server computer. Please first have a ...
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3answers
1k views

Blocking ads at the firewall level

Possible with the proper firewall rules or proxy setup? For example, when an ad loads, at the bottom you can usually see the domain it is loading itself from. I figure block the major ones in a proxy ...
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1answer
153 views

Which application is trying to connect via SMTP from OS X?

I've got a personal firewall running on my Mac (Little Snitch) and for the past couple of days, periodically, it's telling me that something is trying to connect via SMPT – but it does not tell me ...
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1answer
387 views

Windows 8 Pro Remote Desktop issue

I have a weird issue here. I'm running Windows 8 Pro. The client computer is also running Windows 8 Pro. Remote Desktop works when I'm in the same network. I tried connecting using my external IP ...
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3answers
1k views

How can I get rid of the long Google results URLs? [closed]

google.com is always shielded by our firewall. When I search something at google.com, a result list appears. Then I click the link, the URL changes to a processed url like: ...
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1answer
1k views

How to configure firewall for ftp?

I have got ftp working for isolate users on a windows web server running iis 7.0 I am using coffecup as ftp client to connect. when i turn off the firewall on the server the ftp works fine. I can ...
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1answer
330 views

Firefox location bar search: odd behaviour with Comodo firewall

I recently installed Comodo firewall, and it changed the behaviour of my Firefox location bar. I used to type something there and it either redirected me to a google search page or it actually ...
0
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1answer
527 views

MIxing RFC1918 NATed and public IP addresses using IPTABLES

I wish to host a SIP server and DNS at the end of an ADSL2 connection. My current network sits behind an iptables firewall which runs on a Linux box with two Ethernet interfaces, the WAN interface ...
0
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1answer
102 views

IPTables Allowing Access without Rules

I'm sure this is mostly my misunderstanding of how iptables works, but I've set up some rules... -A INPUT -p tcp --dport 22 -m state --state NEW,ESTABLISHED -j ACCEPT -A OUTPUT -p tcp --sport 22 -m ...
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2answers
381 views

Does 32-bit GeSWall protect 64-bit Windows 7?

GeSWall provides excellent Windows security, but there's no 64-bit version. It works on 32-bit Windows 7, and 64-bit Windows 7 can run 32-bit software, so I was wondering whether it does protect ...
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137 views

Block access to certain applications on certain internet connections

I have two internet connections, a LAN and a 3G modem on a Windows 7 machine. The LAN is connected to a Edimax router which is conneted to the ISP (with their own modem). Now, the Edimax router is ...
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2answers
191 views

How can I view my Windows 7 firewall settings?

I am using a work laptop and can't seem to locate my firewall settings. I go to Control Panel > System and Security and I do not see firewall settings anywhere. Could there be some policy that is ...
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0answers
26 views

Prohibit installers from modifying Windows Firewall rules [duplicate]

Possible Duplicate: How to prevent applications from modifying Windows 7 firewall policy