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

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2
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6answers
136 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 ...
0
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4answers
5k views

Firewall blocks websocket

Firewall (kaspersky/avast) blocked messages when I using websocket server (socket.io on node.js), what can i do? (except change default setting in firewall) port 8080 or 8000 thx a lot
0
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1answer
104 views

Limit Netgear Nighthawk AC1750 to given WAN IPs

I have a Netgear Nighthawk AC1750 router, and have SSH, HTTP, and several other ports forwarded to a server. It is not for public use, and will only be accessed by me. I've recently had 60,000 hits ...
0
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1answer
383 views

Prevent the use of VPN/SSH to bypass porn blocking solutions

I've read the various questions about content filtering and it seems that openDNS is the consensus solution, although it's easy to bypass with a VPN service or an SSH tunnel. Is there a way to ...
0
votes
1answer
193 views

Windows NTP Client Not Syncing with my ESXi NTP Server

I have an ESXi 5.1 server configured as a NTP server and a local Windows Server 2008 R2 PC that aren't syncing. I've read that whenever an ESXi server is run as a client, it also acts as a server, so ...
0
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1answer
78 views

iptables on debian blocking git pull, http api requests etc

I am using IPTables on an API server to block all incoming traffic except for SSH, HTTP and HTTPS. I need to have full access on the loopback interface to run beanstalkd amongst other things, and need ...
0
votes
1answer
34 views

Should I allow or deny helpd file to establish connection in my Firewall on Mac OSX 10.8.5?

As in the subject line. Should I allow or deny helpd file to establish connection in my Firewall on Mac OSX 10.8.5? I would appreciate answer to that and more elaborate answer what exactly "helpd" ...
0
votes
1answer
174 views

How to whitelist (Windows Firewall) a program using the Java runtime?

I am using Windows Firewall on a Windows 7 laptop to block outgoing connections by default. I want to allow SurveyCTO, which requires Java, to sync with a remote server. Even with "Allow" rules for ...
0
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0answers
15 views

Making a server “read only” except for me (what the inbound/outbound rules mean)

I have an ec2 instance. It will start a webserver, and my public ip is myip. I ssh into my machine. What should incoming and outgoing rules? Why? I want only my ip to be able to change things on the ...
0
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0answers
18 views

Database showing a list of current vulnerabilities?

I have been recently building my own firewall, but I was wondering is there a website or database which lists majority of the known vulnerabilities so I could obviously update my firewall based on the ...
0
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0answers
14 views

vSphere Directpath NIC isolation

I am building an home server, and I am planning to use VMWare vSphere to create multiple OS that will have precise tasks on the server. On the server, I'd like to have a firewall-antivirus using ...
6
votes
1answer
839 views

How to easily determine, which outbound ports aren't blocked by firewall

I'm behind fairly restrictive firewall regarding ports, that can be used for connecting outside. I'm also running service on my remote box, and I want to connect to it. Problem is, that I'm unable to ...
0
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0answers
404 views

Can't telnet to port 3389 on computer on same network

I have two Windows 8.1 pro computers on the same network using the same FIOS router. On the first computer, I can telnet to localhost 3389. On the second computer, I can't telnet to the first's IP ...
-1
votes
1answer
50 views

Isolate computer network card from main OS

I am starting a project with my old computer, planning to make it into an economic multifunction server, but I am new to networking, servers, virtualization and firewall-Antivirus-Anti-spam software. ...
1
vote
1answer
109 views

How can I block ads on Windows 8.1 Book Reader? [closed]

When I read epub books using Windows 8.1 Book Reader, I see ads at the bottom of the screen. I have tried to change settings in the default firewall included with Windows to no avail. I downloaded ...
0
votes
1answer
73 views

No internet through OpenVPN

I am having trouble with my OpenVPN setup. I have a Linode box with an OpenVPN server installed on it and I managed to get Tunnelblick to establish a vpn connection from my mac. I followed this guide ...
0
votes
0answers
11 views

Can you add a proxy exception with an exception?

Is there a way to add an proxy exception with somewhat of a case match so to speak? so say I want to allow all https, I would use: https://* but I dont want it to apply to https://testsite.com ...
0
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0answers
43 views

Turning off windows firewall

I did the most idiotic thing I can think off: created a firewall rule for a windows azure VPS to block all incoming traffic, on all ports. Now I can't access the VPS, obviously. Any idea how to ...
0
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0answers
82 views

My router bypass the DNS servers I manually entered

I wanted to change the default DNS so as to use OpenDNS ones. I went to the router (192.168.0.1) and then put the DNS adress of OpenDNS in the WAN connection settings. It works and my computer ...
-5
votes
1answer
2k 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 ...
0
votes
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 ...
1
vote
2answers
114 views

Iptables rules to only whitelist SIP providers

I have an Asterisk box sitting behind an ADSL router/modem. There are no other services on the Asterisk box, just telephony. I am getting a lot of traffic which I think are SIP probes. I've ...
7
votes
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 ...
-1
votes
1answer
83 views

My Juniper SRX System-Retry-Options not works, Why?

I have a Juniper-SRX and I want to configure its System-Retry-Options in a way that after 5 unsuccessful attempts to logins for a particular username the device gets locked for the user for 4 ...
2
votes
2answers
83 views

Logitech Support telling us we have an unsecure network and trying to charge $99?

My boss is trying to set up a Logitech Webcam on his computer in the office and he called Logitech support, and they were trying to fix it and could not so he let him on his computer he said he could ...
0
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0answers
16 views

iptable definitions for routing and defence

I'm attempting to configure a firewall on my laptop that allows for routing. The main trick is, I don't want to allow for connections to be made that do not fall under the ESTABLISHED,RELATED ...
4
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2answers
6k views

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?
2
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3answers
246 views

How Do I Block a Host by ASN? Example - AS16276

There are a handful of especially toxic hosts out there. There is no reason we need to allow any of their IP's access to our servers. Is there a way we can block them using their ASN or other global ...
0
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0answers
33 views

browsing difficulties airline websites blocked

I am having problems connectiong to various airline websites. Problem is only on my desktop and not on a laptop which connects to the same router. Problem is irrespective of browser - ...
0
votes
1answer
36 views

Trying to configure iptables on Slackware 10

I am trying to configure iptables on a Slackware 10 machine. This Slackware version is required in my class - so I cannot upgrade it. After compiling it, I want to configure iptables - however, it ...
14
votes
7answers
45k 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 ...
0
votes
3answers
4k views

Remote desktop solution which works with port 80

The corporate firewall where I work won't allow any programs to access any ports other than 80. This is a real bummer because when I try to remote in to external machines, using either LogMeIn.com or ...
1
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2answers
287 views

Windows Firewall blocking broadcast messages, can't get it to allow

I am in the 11th hour and desperately need help figuring out what is going on. We have a game server that is broadcasting updates over 255.255.255.255 to our wireless devices. The messages are ...
3
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0answers
513 views

Remote desktop on custom ports

We have an office with a Windows 2003 SBS server and a couple of workstations. I set up Microsoft remote desktop for each of the computer in such a way that anyone could remote into the computers ...
0
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0answers
17 views

Re-connect to corporate firewall

When I power on my PC, the default internet browser open the page: http://go.microsoft.com/fwlink/?LinkID=219472&clcid=0x409 then I have to enter my credentials to access internet. Every time, I ...
0
votes
1answer
48 views

Would using a public IP address range on a private LAN cause issues?

A client are having problems with their internet connection. Pings 3 or 4 times then times out for a minute or so. The ISP have taken a look at said they can get a connection just fine to the Cisco ...
0
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0answers
38 views

Set a max for number of failed password log in attempts in juniper srx

Normally my Juniper-SRX doesn't delimit number of failed log in attempts. I want to know if is there any way to change settings in a way that after for example 3 failed attempt, that user locked for ...
7
votes
4answers
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 ...
2
votes
2answers
407 views

Can the Snow Leopard firewall remember my choices?

I have the Snow Leopard firewall switched on. Every now and then, it asks if I'd like to allow or deny network connections for an app. I make a choice, and every time I open the app it asks me again. ...
0
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0answers
42 views

Netsh firewall: allow a port just for a single interface

In Win7 with netsh I would like to allow a listening port only on a single interface and block it on all the other interfaces. With the GUI this is possible using the "Protected Network ...
1
vote
2answers
4k views

Windows 7 firewall: Block all incoming requests from a certain IP

How can I modify the Windows 7 firewall to block all incoming requests from a certain IP in my network? In "Windows Firewall with Advanced Security", I can define new rules. However, none of the ...
0
votes
2answers
66 views

Firewalling VirtualBox: restrict host inbound connections to guests only

I have Windows7 + Cygwin and VirtualBox. I would open a listening port on the host accepting only inbound connections from the VMs. Note: In many case the server services running on the host can be ...
0
votes
0answers
214 views

Norton Internet Security 2012's Firewall Is Blocking My Internet Access?

I am running Windows Vista; last week my Norton Internet Security expired, and I had to renew. After installing Norton Internet Security 2012 I am unable to connect to the internet. I think that ...
0
votes
0answers
36 views

Open ports for Age of empires in ubuntu router using iptables

The purpose of this question is to learn how to correctly use iptables. As I am currently living in the dormitories in the University and I am using a small netbook as a router to provide wifi in my ...
0
votes
2answers
113 views

Linux blocks my ports, how to unblock it?

I use Centos 7. I disabled iptables: sudo service iptables stop sudo chkconfig iptables off I also disbaled SeLinux: $sestatus SELinux status: disabled But ports are bolcked. ...
0
votes
1answer
58 views

Set block time with iptables

I have the following rules in ufw, for iptables: -A ufw-user-input -p tcp --dport 80 -m state --state NEW -m recent --set -A ufw-user-input -p tcp --dport 80 -m state --state NEW -m recent --update ...
0
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0answers
63 views

How to ban thousands of IP addresses on 2008 Server

I'm trying to block the Tor Project network from my webserver as many spam/malicous scripts are using it to flood my API. I've tried almost every method possible it seems there is NO WAY to append ...
4
votes
4answers
4k views

how to ssh two computers behind NAT and Firewall, without third computer

I am trying to ssh into my Linux box at home. My home is a dorm-style environment - NAT and Firewall with personal laptop running Arch Linux. My work is corporate style Windows 7 - NAT and proxy ...
-1
votes
1answer
3k views

How to Block Ultra Surf Proxy Client on Windows

How can I effectively block ultrasurf which is being used on our company network. With ultrasurf all web filters applied on the network are useless. Does anyone have a solution to this problem?
0
votes
0answers
51 views

OpenShift Origin: isolating application containers from local network

My network with OpenShift Origin is setup like this: A firewall running pfSense (172.16.0.1 + external IP) A ProCurve J9029A switch (if that helps...) An Ubuntu-based Virtualbox hypervisor ...