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

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3
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1answer
869 views

How to block docker-mapped ports with a firewall from outside the host without messing up docker routing inside the host?

I have a docker container running on a host with some port mapped to a port on the host. docker run -d -p 9009:9009 someserver I want this machine firewalled off from the internet except for 80, ...
3
votes
2answers
6k views

How to disable SuSEfirewall2?

How can I disable SuSEfirewall2 from the shell (without yast)? We use OpenSuSE 12.3 I tried it: workdevel123:~ # systemctl disable SuSEfirewall2.service But I think this is not the solution: ...
3
votes
1answer
9k views

How can I prevent Windows 7 from automatically changing the firewall settings (turning it back on) when changing network location?

By default, the firewall is turned on on all my workstations. I want to disable it. That works just fine. However, if Windows thinks there is a change in the Network Location, the "Set Network ...
3
votes
1answer
1k views

Firewall blocks localhost but only if it's turned on

I run XAMPP server on my Windows XP. If I try to access to http://localhost or http://127.0.0.1 it gives me this error: Could not connect to remote server This only occurs if my Comodo firewall ...
3
votes
1answer
527 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 ...
3
votes
1answer
14k views

Block (or only allow certian) incoming IP addresses on Verizon FIOS Actiontec Router

I opened a few ports to the outside of my home network so I can get into a few of my machines from outside. When checking some logs, I noticed that I was getting scanned on some ports from various ...
3
votes
3answers
6k views

How come I can't ping my home computer?

I'm trying to set up a vpn into my home computer in order to access files from wherever. I have the home computer set up with a no-ip dynamic dns program so I can always connect, and have also tried ...
3
votes
1answer
122 views

UDP “connections” rejection

I'm managing (edit: is hosted by VPS hoster) small machine for couple of game servers and website server (apache) together with some friends. Problem is firewall sometimes drops UDP packets. The ...
3
votes
1answer
1k views

How to isolate networks with a Mikrotik router?

I have recently got a Mikrotik router for my network, and I want to create 3 networks that are isolated from each other but all have internet access: The "main" network for PCs, etc. A network for ...
3
votes
1answer
281 views

Port Forwarding with 2 NICs via Windows 7 firewall

I have a computer with two network cards, each of them connected to a separate network. I would like to forward all requests that arrive via port X from one networks to port Y on a host in the other ...
3
votes
1answer
7k views

Any need to open Adobe socket policy server port 843?

So I've noticed that whenever I visit a adobe flash site I get entries in my outgoing iptables logs like netfilter:out dropped: IN= OUT=eth1 SRC=192.168.1.79 DST=91.213.212.48 LEN=60 TOS=0x00 PREC=...
3
votes
2answers
527 views

Prohibit internet access for all applications except selected ones (OS X)

Is there a tool that can be used to prohibit internet access for all applications except selected ones (on Mac OS X)? "Little snitch" can't be the answer, as it doesn't provide a simple "deny all / ...
3
votes
1answer
6k 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 ...
3
votes
2answers
866 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 ...
3
votes
1answer
152 views

Interactive network sniffing

I'm looking for what essentially amounts to an "interactive" Wireshark. I am looking for a tool that allows me to view network traffic on a given port and allow/deny/modify traffic on a per-packet ...
3
votes
4answers
3k views

Is there an interactive firewall for outbound traffic on Ubuntu?

I wish to prevent some programs from "phoning home", and to allow other programs to access only specific web servers. Is there any way to interactively allow or decline outbound communication from ...
3
votes
2answers
3k views

Recommend a proxy server for Dropbox [closed]

I live in China and used Dropbox extensively up until it was blocked this last week. Is it possible to use a proxy server with Dropbox? Which ones should I try?
3
votes
1answer
54 views

Can someone explain strange inbound connections on my server log?

Ok, so I only know as much about networking as I have learned in my Computer Systems and Electronics courses, and I am seeing something that I'm not sure how to interpret. My brother wanted me to make ...
3
votes
1answer
43 views

control internet traffic in a lab using centralized software firewall

I am trying install a software firewall in our lab. How I am planning to do this is by, installing a firewall application on a computer. There are two network adapters attached to this pc, one is ...
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 ...
3
votes
2answers
14k views

How to permanently disable firewall in Red Hat Linux

I have followed the below steps to disable the firewall in Linux. After reboot, again firewall is enabled. How to disable firewall permanently? Login as the root user. Next enter the following three ...
3
votes
1answer
6k views

Redirect incoming https to local ip with iptables

I have a router with 1 network interface (eth0, public ip) and an alias for eth0:0, local ip 192.168.1.1. I want to redirect all incoming https (443) traffic to another server. I tried it with ...
3
votes
2answers
518 views

How to identify what program is sending traffic?

I have a Macbook with the PF firewall Icefloor installed on it. I've been seeing a massive amount of traffic (multiple requests every single second) going out to IPs belonging to Google, even while my ...
3
votes
1answer
3k views

How can I permanently allow a firewall rule in OS X Mountain Lion?

Since upgrading to OS X Mountain Lion, every time I restart my computer I am alerted Do you want the application "Growl.app" to accept incoming network connections? Even though I click "Allow"...
3
votes
1answer
3k views

Why can't I edit firewall settings on my Netgear router?

My router is the Netgear WNR854T or firmware 1.4.38. I am trying to access the firewall configuration settings, but the link to get there isn't showing up. This is what I see: As you can see, the "...
3
votes
1answer
3k views

How can I use Windows Firewall to only permit the Windows Update service to make an outbound connection?

I'm trying to tailor my Windows Firewall settings (using the Windows Firewall with Advanced Security console) to only permit programs that need to access the Internet with an outbound connection to do ...
3
votes
2answers
1k views

I can't do a Remote Assistance session to a Windows XP box from Windows 7

My Mom's computer is running Windows XP, and my desktop running Windows 7. She's having some technical issue, so I want to do a Remote Assistance session to her machine. However, no matter what I've ...
3
votes
1answer
593 views

Looking for network monitoring software for Win7 x64 (similar to the one included with Sunbelt personal firewall)

I've upgraded from Windows XP to Windows 7 (64bit) and I found that the very convenient Sunbelt Kerio Personal Firewall will not work on this version. I hear the Windows 7 firewall is good enough(...
3
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0answers
2k views

Almost all sites won't load in Windows 10

Recently my Internet has been acting badly. Basically, I can only load certain sites. Some sites work great, and others don’t load at all. I think this is because some firewall or antivirus thing. ...
3
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0answers
52 views

Configure firewalld to distinguish home and public ethernet connection

I connect my notebook via ethernet at home and outside. I want to open some ports for services like samba only at home and not somewhere else. How can i let firewalld automatically detect where i am, ...
3
votes
0answers
239 views

How to use new keyword dummynet-anchor in pf.conf of Mac OS X

Mac OS X introduced a new keyword “dummynet-anchor” in pf.conf file, which not used in FreeBSD and OpenBSD. The ipfw was removed in Mac OS X 10.10, How to use “dummynet-anchor”? UPDATE: What portion ...
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 ...
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
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 ...
3
votes
3answers
2k views

Cannot connect to WEBrick on home network

I'm an Android developer and often my applications require server-side code. I typically use Ruby on Rails for the web app, and during development will run the server on my local machine (Mac OS X) ...
3
votes
0answers
678 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 ...
3
votes
1answer
2k views

Why are SSDP multicast packets blocked on m0n0wall; how to unblock them?

My firewall logs are being flooded with logs of packets being blocked that i don't want to be blocked: Every 3 seconds there are 2 packets being broadcast from my machine: Interface: LAN Source ...
3
votes
1answer
3k 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 ...
2
votes
3answers
2k views

I need to block torrent downloads

My cousin complains that his housemate uses torrent and thus it causes slow connection to my cousin. He owns the ADSL modem and I saw some good futures such as blocking websites or protocols. Like if ...
2
votes
6answers
4k views

Setting up Multiple Routers (as Hardware Firewalls) behind a Home Router

I’ve currently got one computer behind a router with built-in firewall functionality, connected to a home cable-modem that has a single Ethernet port and one IP. I’m going to have to set up another ...
2
votes
5answers
1k views

ports I should block

I recently set up an Ubuntu Server at home, and the first thing I did was place the UFW firewall at full power. Bad move. I could not even "rlogin" to it. I just disabled the firewall, and would ...
2
votes
2answers
18k views

How do I block Steam?

Which ip addresses and/or ports/protocols do I need to block at my firewall to prevent Steam downloading updates? I want to prevent my housemates from inadvertently downloading Steam updates when our ...
2
votes
3answers
115 views

What means 59.164.0.0/20

If I enter for example "block 59.164.0.0/20" as a firewall rule. Does that mean it blocks the IPs 59.164.0.0 to 59.164.0.20 or does it mean something else ?
2
votes
3answers
14k views

Enable ping in Windows 7 firewall?

Server Fault tells that the new syntax to enable ping on Windows Server 2008 is netsh advfirewall firewall add rule name="ICMP Allow incoming V4 echo request" protocol=icmpv4:8,any dir=in action=...
2
votes
5answers
12k views

Open-source firewall/router software (alternative to Kerio WinRoute) [closed]

I'm looking for an open-source alternative to Kerio WinRoute. Specifically, I want the PC running it to act as a firewall, router & bandwidth manager. Of the features I'm looking to use are: ...
2
votes
3answers
25k views

How to enable response to broadcast ping on Windows?

I have many Windows servers in the lab. I wanted to use ping broadcasting to discover the machines. I try to avoid a central server to maintain the list of machines as this seems like a single point ...
2
votes
2answers
4k views

How to find DoS attack source IP address in windows server 2008?

I have a windows server 2008 R2 which is victim of a DoS attack. How can I find out which IP is the source of attack? I have a anti DoS module on IIS 7.0 which works fine but it seems destination is ...
2
votes
4answers
611 views

Do I need firewall in this setup?

My home network connects to the Internet via a cable modem which is connected to a router. This router is what connects my different network appliances together (printer, switch, computers etc). I ...
2
votes
2answers
1k views

Log entry about “DoS Attack” on my router

I was looking in the log on my router Netgear WNR-2000 today and found this log entry: [DoS Attack: ACK Scan] from source: 78.72.133.126, port 27014, Friday, November 19,2010 10:49:04 What does ...
2
votes
1answer
6k views

What Does This Windows Firewall Rule Do?

I found and implemented this code that adds a rule to Windows Firewall. It supposedly speeds up YouTube streams. Can someone explain what is does in terms of request/response? I'm not seeing any ...