Software that controls what connections can be made to and from a network.

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0
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1answer
42 views

How to white list some ip and all the rest block while having already a DMZ?

I have a Linux machine running which has local ip: 192.168.1.2 connected to a router with public IP 8.8.8.8, now the router 8.8.8.8 has DMZ to 192.168.1.2 As a result spammers, hackers, crackers ...
3
votes
1answer
3k views

Allow access from outside network with dmz and iptables

I'm having a problem with my home network. So my setup is like this: In my Router (using Ubuntu desktop v11.04), I installed squid proxy as my transparent proxy. So I would like to use dyndns ...
1
vote
0answers
93 views

If nmap reports a port is open, does that ALSO mean a service is listening on the port?

I have a Thompson TG585v7 router/firewall whose firewall is configured to FORWARD several ports to a computer X54 within the LAN. These ports are in the range 1024 through to 2500 That X54 ...
0
votes
1answer
4k views

Firewall open ports for vSphere

I need to open ports on a firewall, so that a client could access his VM console through vCenter server's Web Client. I had a look at this page about port description, but I am a little confused. I ...
1
vote
2answers
679 views

Unable to open port on Win7 machine

I'm trying to run Privoxy as a proxy on my machine. I want the browser on my Android device to access the internet through it. Now I've opened exceptions for both Privoxy and port 8118 (which is the ...
0
votes
1answer
18 views

Enabling Remote Connection through FIrewall with Firewall diasbled

I'm running a dedicated server with Windows Server 2012 R2. Recently I locked myself out by Enabling Windows Firewall. No port rule was in place so the remote connection got blocked completely. I ...
0
votes
1answer
10 views

Cannot go on Internet from my remote location over vpn connection

Many information exists on this forum and Internet but I just can't filter out the solution for me. My setup is quite simple. I just installed pfSense and configured OpenVPN server on it. I downloaded ...
4
votes
4answers
18k views

Windows 7 is blocking ports

I am trying to open port 80 and 3690 for HTTP and svnserve respectively (inbound for both). I have Windows Firewall off, and have tried temporarily disabling Mcafee VirusScan Enterprise, to no avail. ...
14
votes
8answers
40k 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..
-1
votes
1answer
21 views

What are the basic commands for ufw firewall in Ubuntu?

I want to setup ufw firewall in ubuntu. Please list some basic commands that I need to learn to operate it via termianl.
0
votes
1answer
16 views

How to test outoing traffic on random ports? (I'm on OS X)

In some situations or on some locations, I'm struggling with restricted outgoing traffic. For example a restricted LAN where outgoing traffic is only allowed on limited ports. I know how to check or ...
0
votes
0answers
25 views

Nginx Proxy : Constant Backend Upstream

I currently have a nginx reverse proxy setup to my backend server. What I would like to do is instead of having nginx request something from my backend server when requested by a user, nginx will have ...
0
votes
2answers
13k views

How to open a specific port in Moutain Lion Firewall

I cant seem to find how to open a specific port in the ML firewall? I know you can give applications permisiion, but thats no good to me. Is there a way I can specify a specific port?
0
votes
0answers
8 views

Firewall rules by command in Windows will still work when using 3rd party firewall software?

Firewall rules can be set by command in windows, this way: https://support.microsoft.com/en-us/kb/947709 Would those command still work if the computer has a 3rd party firewall (like Comodo, ...
0
votes
1answer
26 views

Nmap scan on my LAN is blocked by my host firewall (Linux)

I recently added some rules to GUFW to make sure only my (personal) VPN connection is allowed to get out, x.x.x.x being my ip, y.y.y.y being my VPN's IP I connect to. To - Action - From y.y.y.y ...
0
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0answers
22 views

Windows firewall block SSH to another subnet

My network has 2 subnets /25 and Linux server in each subnet. In one of the subnet is Windows computer which is used for managing Linux servers via SSH. But there is problem with firewall on this ...
3
votes
2answers
12k views

Block Certain Websites in IP Range Through Router

I have a MikroTik Router 951Ui-2HnD that connects my computers with the ISP, and want to block Youtube and Facebook but only on a few computers. I created a Layer7 Protocol with: Name : Denied ...
0
votes
0answers
64 views

Firewall service doesn't start after reboot

Every Sunday morning, our VDI's with W7 32 bit and VMware view 5.1 get a scheduled reboot. About 5% of them are not reachable after the reboot. It turns out the Firewall service hasn't started. When ...
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0answers
27 views

How to set up OpenWrt traffic rule for port forwarding IPv6 server on my LAN?

I would like to allow inbound IPv6 traffic on ports 80/443 for a globally routable web server on my home network. What's the best way to do this with OpenWrt, which by default blocks incoming IPv6 ...
0
votes
0answers
18 views

El Capitan with firewall on won't allow SSH connection

After upgrading to 10.11.5 I cannot SSH in to my Mac any more. Remote login is enabled in Sharing. In Firewall options, I see the green Allow incoming connections next to Remote Login (SSH). As soon ...
0
votes
0answers
15 views

Ddwrt drops some return traffic.Why?

I'd like to know why my ddwrt wifi router drops some return traffic. This is not an issue or a problem. I'd just like to understand. I add a screenshot of my logs. As you see, the source IP is 192....
7
votes
2answers
10k views

Import Export specific Windows Firewall Rule

How do I Export and Import specific Window Firewall rule (both Inbound and Outbound) ? I can do Import / Export policy but it will use ALL rules not specific rule. Same with Export List, it can ...
8
votes
4answers
4k 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 ...
0
votes
0answers
27 views

Port forwarding port 21 on a TP-Link

I am trying to forward port 21 to externally access the FTP server. I followed all the steps correctly to port forward a port but port checker tools still show that the port is blocked. Port ...
0
votes
1answer
21 views

Block common dos attacks

I have been searching for some basic IPTABLES protection agains Syn attacks and floods I have found thise commands: iptables -A INPUT -p tcp ! --syn -m state --state NEW -j DROP //syn protect ...
0
votes
1answer
18 views

Firewall stop working and serveral other problems after recent windows7 update

After the last windows7 update Suddenly the firewall stopped working. I did a system restore (before the update) and it worked fine again. The problem what occurs are: 1) Firewall shutdown (error code ...
3
votes
3answers
9k views

Windows firewall blocks remote desktop with custom port

I was able to use my remote desktop with custom port when I was using Kaspersky Internet Security. Now, I have uninstalled my Kaspersky and switch to Avast!. Therefore, the windows firewall is turned ...
0
votes
0answers
20 views

pfSense Port Forwarding using Alias Not Working

I am running a pfSense 2-3-RELEASE firewall and I am trying to set up NAT port forwarding so some development servers and my Mac. The servers (FreeBSD) have statically assigned IP's and my iMac has ...
0
votes
1answer
26 views

Correct way to block all outgoing traffic and allow only one application

I am trying to block all traffic on a machine, except the outbound connection for an application with some ip's and ports. This is how I'm doing it but it's still blocked: First, I turn on firewall ...
1
vote
1answer
33 views

Incoming connections from public to private IP address

Today i have checked the auth.log of my raspberry (private IP address in my home network behind a wrt54gl). Surprisingly i saw a lot of "Failed password for root from" lines. The SRC IP can be found ...
0
votes
0answers
10 views

Set an OpenWRT as a Dumb AP while running 6in4 tunnel?

The computer connect to OpenWRT router through LAN port, the router connect to another router using WAN port. So it's like: Computer -> OpenWRT -> External Router(Still in private address setup) ...
0
votes
1answer
21 views

netsh command to block URL from firewall

I am trying to block a URL with the firewall using netsh command, but without success. This is how I block an IP: netsh advfirewall firewall add rule name="Block URL" remoteip=<ip_to_block> dir=...
6
votes
4answers
6k 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 /usr/...
0
votes
1answer
26 views

I want to install vpn server on windows/unix for internet access

I want to install vpn server on windows/unix whichever runs best to bypass country restrictions to access web sites. The main purpose is the divert my all internet traffic through connected vpn. I ...
1
vote
1answer
3k views

UDP blocked by Windows XP Firewall when sending to local machine

I work for a software development company but the issue doesn't seem to be programming-related. Here is my setup: Windows XP Professional with Service Pack 3, all updated Program that sends UDP ...
18
votes
9answers
36k 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 ...
2
votes
1answer
4k views

How to allow windows store apps and the windows strore to pass the windows firewall

I use the windows 8 firewall and I wanted it more secure, so I block incoming and outgoing connection. Unfortunately I realized that the windows store did not work as well and all application from the ...
0
votes
0answers
24 views

Why people cannot do remote desktop to my computer if firewall is on?

If firewall is off it can. First thing I notice is I am on private network. The network is private Note: I am typing this through remote destkop. So now it works. However, 20 minutes ago it ...
0
votes
1answer
24 views

How do I force all traffic through VPN

I am using Debian 8, with openvpn, I am able to connect to the vpn but traffic (ping google.com) isn't working (ping: unknown host google.com). Ontop of that I'd like to add an ip table to the ...
7
votes
4answers
44k views

Is there a simple way to detect ISP port blocking?

Is there a way to tell the difference between my ISP blocking traffic on certain ports and my NAT router/firewall blocking that traffic? The sites “Shields Up” and “Can you see me” show my ports ...
0
votes
0answers
7 views

Why does my Netgear firewall cause a massive slowdown in throughput over WAN port?

I have a Netgear Prosafe FVS318G firewall and I am experiencing a significant decrease (orders of magnitude) in throughput over the WAN port as opposed to normal LAN throughput. I have the firewall ...
3
votes
1answer
3k views

Windows 2008 Firewall - How do I restrict HTTP inbound to specific IP?

My goal is to restrict all HTTP inbound requests to a specific IP addresses. I thought it would be a simple process - but I am not getting the result desired I have modified a predefined rule called ...
3
votes
1answer
11k views

How to setup firewall to allow internet connection sharing via Wifi USB stick?

I have a Windows8 computer linked to the internet via an ethernet cable ("Ethernet" network connection). I have attached to it a DLink Wifi USB stick, and I'm trying to share the main PC's internet ...
0
votes
1answer
30 views

how to block subdomain from any domain with windows7?

There are a lot of crappy websites which install spyware or badware software with a common subdomain name. For example (don't try these URLs, they are dangerous): 4d0a8a26-a90a-43b8-90c6-...
0
votes
0answers
26 views

Mac won't open sites after installing avast

Sorry if it's wrong place to ask a question like this. I installed Avast to fix a malware, and then all websites barring few (basically Google) won't open. I've uninstalled avast but the problem ...
0
votes
1answer
25 views

can a Windows firewall rule detect what adapter is in use?

Is there a way for a Windows 10 firewall rule to determine what network adapter is in use? Can it differentiate between Wi-Fi, TAP, Ethernet, etc.? Poking around Windows Firewall for the first time, ...
-1
votes
0answers
27 views

what do I need to learn about Windows firewall or routing rules to protect against VPN disconnect?

I'm learning about Windows networking, first of all for fun. (I'm a programmer who always wanted to de-mystify system admin stuff.) But I have a specific task in mind: making sure that network traffic ...
0
votes
0answers
22 views

How to download the Firewall in Kali?

I tried the following : 1) I updated the source list 2) updated and upgraded using sudo apt-get update && sudo apt-get upgrade 3) used the command: sudo apt-get install gufw 4)...
0
votes
1answer
3k views

Adding many IP addresses to Windows Firewall using CLI fails partially

I have a PowerShell script which adds IP addresses to Windows Firewall using the "netsh advfirewall" command. (As described in this question: How to append netsh firewall rules, not just replace). ...
0
votes
1answer
715 views

FTPS - Can't Open Data Connection over WAN

Here is my setup, 1 Windows 2008 R2 Standard Box /w G6 FTP Server installed G6 is configured to use explicit SSL connections only (TCP:990) 1 WatchGaurd Firebox Firewall (between server and internal ...