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

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1answer
5k 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 ...
3
votes
2answers
416 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
5k 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
1answer
149 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 ...
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votes
4answers
2k 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
2answers
9k 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
5k 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
497 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 ...
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 ...
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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 ...
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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
588 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 ...
3
votes
0answers
47 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
2answers
9k views

Block websites to a certain IP range with mikrotik router

I have a MikroTik Router 951Ui-2HnD that connects my computers with the ISP. I want to block Youtube and Facebook but only in a few computers. I created a Layer7 Protocol with: Name : Denied Websites ...
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
628 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
1k 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 ...
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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 ...
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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 ...
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2answers
15k 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
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3answers
114 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 ?
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5answers
11k 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
13k 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 ...
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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
607 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
983 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
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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 ...
2
votes
3answers
1k views

How to ssh to a linux server behind corporate firewall?

My company has a linux server (CentOS 6 VM) behind a corporate firewall, I have full root control of the VM, but I have no control over the firewall. There's an ssh server running on it, and I can ssh ...
2
votes
2answers
461 views

iptables in ubuntu

i want to stop iptables firewall in ubuntu. how can i do that???
2
votes
2answers
6k views

How does telnet get through the windows firewall?

I activated the Telnet client in Windows 7 and was instantly able to connect to servers although Windows Firewall is activated. How does that work? Shouldn't the firewall block outgoing connections ...
2
votes
5answers
13k views

iptables: Allow only HTTP access for web browsing

Have a linux box, want it locked down but just be able to surf internet on it. Why is this script blocking http too? #!/bin/sh # # iptables -F # #Set default policies for INPUT, FORWARD and OUTPUT ...
2
votes
1answer
3k views

What port(s) etc. need to be open on a firewall to allow successful operation with BitBucket

Over the weekend, our IT department installed an updated firewall. As a result, we are no longer able to pull from (and push to) the repository on BitBucket. Attempting to perform a Mercurial ...
2
votes
2answers
805 views

System.exe trying to connect microsoft ISP

When i connect to internet, I often get these firewall notification requests that system.exe is trying to connect Process: System Remote Address: 94.245.121.212, PROTO41 through PROTO41, the ...
2
votes
2answers
523 views

Why after Accepting Ports 20 and 21 in iptables are they still closed?

I am trying to open the FTP Ports on my server. I have vsftpd installed on the server already. However I am unable to reach the server on ports 20 and 21 Somehow it is allowing me to access port 21 ...
2
votes
2answers
2k views

Wifi router blocks wireless peers from connecting each other

What option controls that wifi router blocks wifi peers from connecting each other. I have wifi router Dlink Dir-320. With that router I can't ping (or connect via FTP or HTTP) one laptop from ...
2
votes
1answer
3k views

netsh, block all IP addresses in a text file?

Is there a way for me to import a .txt file (with IP addresses on each line) into Windows Firewall? I want each of the IP addresses to be completely blocked. That would also provide an easy way to ...
2
votes
2answers
85 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 ...
2
votes
1answer
2k views

Deny ping response in ipv6

I would like to know how to deny ping replies on my ipv6 address. We have been messing around with ping flooding on ipv6 at work, and the usual way to block icmp requests does not work. I have tried ...
2
votes
2answers
7k views

MacOS X: log is full of “stealth mode connection attempt”s from LAN router

MacOS X's logfile daily.log is full of lines like this: Sun Jan 29 09:51:47 nameofmymac Firewall[77] <Info>: Stealth Mode connection attempt to UDP 192.168.2.49:51855 from ...
2
votes
2answers
105 views

Hitting try agin button again and again in firefox breaks the firewall?

The IT department of our company have blocked FB. but if we keep on hitting try again button again and again after 6-7 attempts it opens. Why is this so?
2
votes
1answer
10k views

Windows 7 firewall causing remote connection to time out; should refuse connection

The Windows 7 Firewall is running with default options to allow outbound connections and block incoming connections. I have a process trying to connect regularly from within my local network, which is ...
2
votes
1answer
795 views

Use Shorewall to port-forward requests based on the domain requested to different servers

How can I get my firewall to port forward traffic that is comming into different domain to different servers. So I have two web servers. Each one hosts different domains on different servers/IP: ...
2
votes
5answers
798 views

Easiest way to restrict IP access per user on ubuntu

I installed Ubuntu 10.10 on an old laptop for my daughter and want to be able to restrict which web sites she can access. I would like to have a white list of addresses she can access. Can anyone ...
2
votes
2answers
420 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. ...