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

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Local Network Addresses Visible to ISP

While I was on a support call with my ISP, their network engineer started listing IP addresses that were visible to him on my local network. He was right on the money as far as IPs that were up. I'd ...
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1answer
850 views

Process vsserv.exe attempts connection to unknown host (clients.your-server.de)

from past few day I notice a new connection is being made from my system, I discovered it within the outpost firewall, it is blocked by default with the reason Block Transit Packets in the image ...
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66 views

Restrict Hamachi Gateway Scope / Ports

A client wants to make a couple of websites intranet-only, but still allow access at about 30 outside locations. Hamachi gateway would work nicely for this, but I do not want those computers to have ...
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3answers
244 views

I can ssh out but not in. Reversible?

I have an account on a server inside my corporate network. I also have a VPS from Linode. I can ssh from the corporate server to the Linode VPS or to my home computer with no problems. But thanks to ...
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1answer
282 views

opened port on router for java socket

I am trying to make a peer to peer application and I want a port to exchange connection information and I want to ensure that this port would not be closed from the firewall on the way between peers ...
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1answer
55 views

VNC (or RDP) server using outbound connection only

How do I set up a VNC server that connects to an intermediary server to start an outbound communication, that can be used by a VNC client. This way the port forwarding doesn't need to be set up, and ...
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498 views

firewall detecting outgoing connections of weird hostnames

Recently, I am monitoring every outgoing connection with the help of my firewall. Sometimes when I want to connect to the Internet I receive alerts that some strange looking hostname is going to have ...
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3answers
81 views

Is the any way other then ping to detect internet connection?

I have a rails server (Linux). I can open the site with machine A. Using machine B I just can use ssh port to connect it, but it cannot open the site and the rails server cannot detect the http ...
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1k views

Redirect ALL web traffic through TLS without a VPN

Assumptions: Server: I have a Debian Squeeze server, routable on the public Internet, with a static IPv4 address. I have unrestricted access to modify the software on the server. The server can ...
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2answers
13k 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 ...
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1answer
121 views

Portforwarding fails

I know how to portforward and I did it on at least 5 different routers at different places. But at home, it does NOT work. I can't figure out why. I tried different routers, even routers that I ...
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95 views

Can I backup and restore firewall settings on win 8.1?

Can I backup and restore the firewall whitelist on windows 8.1, independently of any other system settings??
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1answer
124 views

Open ports in Ubuntu 13.10 server

Im setting up a realtime gameserver fps-game, and then i need to configure ports. Just to mention, i will setup multiple servers for this game on the same ip address, which means i must open multiple ...
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2answers
402 views

Torrent ports and firewalls

I use this uTorrent program, under its settings 'Listening port' I set up a port of 46301, and also open that port in firewall. But whoever connects to me to leech, they connect to random ports ...
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375 views

Blocking Incoming IP With Win 7 Firewall

This question was asked before, but the answer is not working for me and the rules of this forum say do not respond to answers, so I am asking again. I went through the following process on the Win 7 ...
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1answer
56 views

CentOS - ipTables

I have some questions about ipTables. Is it possible to open all ports between 2000 and 6000 and then have 2245, 5435,5434 closed? Is it possible to open some ports from a ip address? Eg. The only ...
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2answers
2k views

How to enable Remote Assistance and add an exception for it in Windows Firewall from the command line?

I need to enable Remote Assistance from the command line. The equivalent of checking this box and hitting Apply. This is for automation and I tried editing the registry entry HKLM\System\...
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221 views

What might be causing specific IPv6 HTTPS servers to send an excessive number of RST packets?

Client browsers on my IPv6-enabled home network hang and time out when attempting to load https:// URLs from specific IPv6 sites, such as ones operated by CloudFlare. In those situations, the live log ...
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3answers
949 views

Comodo Firewall blocks Cisco Anyconnect VPN

I am running Comodo Internet Security Firewall (6.3) and trying to connect to work using Cisco AnyConnect VPN client. I can make the connection but can't do anything else, not even ping by IP ...
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297 views

How to correctly configure iptables on a laptop?

I have run these commands (tried switching the order too) because I want to set up a firewall on my laptop so that nobody can connect to it (except of course in response to a connection I've made): ...
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2answers
2k views

FTP not accessible outside of LAN

Ok so I really need some help with this, I have XAMPP installed and am hosting a webiste with it for my friends and i to work on. I am able to see the site just fine and also i am able to get to ...
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145 views

How to force Remote Desktop via firewall rules to use LAN instead of WLAN?

WLAN has higher priorities than LAN but Remote Desktop seems to still use WLAN. I tried to achieve this by setting up a firewall rule but this does not seem to do the trick. Here is what I tried: 1)...
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22 views

Why can I not block certain applications on Windows 7 Firewall?

The situation is this. I open firewall.cpl in the start menu and I'm trying to block a specific application from accessing the Internet (one which wasn't present on the list, I might add--so I added ...
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36 views

port forwarding in windows

I need to forward all incoming traffic on specific port to another port on the same device "locally not proxy", and all outgoing port traffic. in Linux it is possible using iptables I used NAT chains (...
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1answer
3k views

Can a people DDOS a block Port?

The title says it all, I've search around the net but no avail. From what I understand, DDoS is a distributed denial of service attack, where multiple people sent a huge request at a same time which ...
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1answer
2k views

Windows firewall - block all incoming connections enable/disable - CREATE SCRIPT

Is it possible to create script which enable/disable the first checkbox of windows 7 firewall settings (Block all incoming connections....)?
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1answer
82 views

Permanently add a firewall exception on Windows 7

I'm using Windows 7 32-bits and on every start-up, a Windows security alert popup is displayed and I need to authorize the programs to access the network. If I accept the popup, the program can ...
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1answer
236 views

IPSet with IP6Tables ERROR

Can someone please solve my headache and tell me how to fix this? [root@www ~]# ip6tables -I INPUT -m set --match-set blacklist6 src -J DROP ip6tables v1.4.7: Couldn't load match `set':/lib64/...
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1answer
505 views

Opening a port on CentOS server not working externally?

I am trying to to setup a Ghost blog instance on port 80 of my CentOS 6 virtual server. There are no pre-installed web servers occupying port 80. If I run Ghost in production mode as a background ...
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63 views

Is it possible to restrict access to certain URLs for individual programs?

I have a certain use case where I want to whitelist a list of URLs that a certain application can access. In other words, I want to sandbox it, but don't have access to blocking or white listing those ...
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1answer
716 views

No Internet Connection on using Buffalo WHR-G300N

I have used the Buffalo WHR-G300N over 2 years while I will use it for connecting all of my devices to Internet @ home. However, two days ago, I have the issue that the router suddenly disconnected ...
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2answers
271 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 ...
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1answer
41 views

Firewall policies

I have a Juniper 5GT firewall that I use for my home server, On my home server I have an SSH server running, I am trying to access the SSH from the untrust side of the firewall, from what I believe ...
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1answer
17 views

Restricted logins + almost all ports closed : secure?

Context : I plan to travel. I want to make a little cloud with my personal server. I wish I could d/l some of my files and eventually upload some files which will not be executed and the whole is ...
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1answer
95 views

Redirect ports with iptables

I need to do redirect port 443 on all interfaces to 8080 on one interface using iptables on a box with 2 NICs. I also need to block pretty much anything else on those interfaces. Here is my iptables ...
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3answers
116 views

outgoing ssh fails from only one machine on lan to outside network

I have multiple servers in my LAN (which I'll refer to as Box1), and they are all able to make outgoing SSH connections, except one that stopped recently, which I'll refer to as Box2 (actually, I'm ...
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1answer
138 views

Questionable NTP Traffic at Firewall?

I checked my firewall logs and noticed odd traffic patterns for NTP or UDP/123 (shown below). I don't understand the round robin'ing that's occurring from my hosts. And I don't understand why its ...
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2answers
46 views

Windows 7 - View list of sent files (Firewall)

Is it possible to view any files that have been uploaded from the computer through the firewall? I have been using a keylogger and my AntiVirus flagged it as a virus today. I would like to know if its ...
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149 views

Firewall blocking access to cpanel admin page

a firewall is blocking access to my cpanel admin page. I get a Cpanel login box but when I enter username and password it says incorrect authentication. This has only occurred in the last 3 or 4 days ...
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1answer
288 views

Amazonaws blocked by modem?

since some time i have the following problem: I can't download a .exe file (in my case the "Minecraft.exe" file) from s3.amazonaws. It does not work on 2 laptops, which are connected with a Vodafone ...
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1answer
397 views

Bypass home router firewall [closed]

I have a roommate who is sometimes allowed to use my internet connection. When he needs access to the home network, I simply go into the router settings and remove his hostname (roommate-PC) from the ...
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1answer
93 views

Reach ssh server behind a router on embedded system using established socket connection

I have developed an embedded application running linux to do remote I/O control. The application open a socket connection to my server to communicate, periodically, the state of the I/O and getting ...
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2answers
1k views

Pinhole Conflicts

I am trying to write a simpler client server program, using my laptop as the server and several Android devices as clients. The server listens on a port (say, 5902) until a client tries to connect. ...
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1answer
623 views

Asterisk server firewall script allows 2-way audio from incoming calls, but not on outgoing?

I'm running an Asterisk PBX on a virtual machine directly connected to the Internet and I really want to prevent script kiddies, l33t h4x0rz and actual hackers access to my server. The basic way I ...
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1answer
141 views

Windows 7 windows firewall updates error

I'm having a issue with windows firewall. I can't turn it on or off. I also can't edit it. And Windows firewall is requesting updates, but whenever I make those updates it still doesn't work. Here's ...
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4answers
128 views

Would a switch be covered by a router's firewall

I need more Ethernet ports on my home network. Sadly, we already have an old router connected to the main router and we still need more ports. Would the devices connected to the switch be "protected"...
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2answers
822 views

How can I get Windows 7 firewall from being stuck in public network?

A few weeks ago, my Windows 7 Firewall switched itself from a private network to a public network. I noticed the problem when I was trying to stream a movie from my computer to my TV (as I did dozens ...
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1answer
527 views

Block All Traffic and Allow from Defined IP only in IPTABLES

I want to create a gateway firewall for my network . I want to block all the internal traffic on gateway and allow it from two computers only . On gateway --> eth0 is network card in gateway PC ...
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4answers
2k views

Remote into Linux workstation behind a firewall using NoMachine or other remote desktop service

My question is very similar to this question: Remote into Linux workstation behind a firewall My work has firewall and ssh server. The ssh server is listening to the default port 22. Normally I don'...
9
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2answers
13k views

Why does NTP require bi-directional firewall access to UDP port 123?

From What are the iptables rules to permit ntp?: iptables -A INPUT -p udp --dport 123 -j ACCEPT iptables -A OUTPUT -p udp --sport 123 -j ACCEPT Also, from the NTP website: ... ntpd requires ...