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

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Block access to certain applications on certain internet connections

I have two internet connections, a LAN and a 3G modem on a Windows 7 machine. The LAN is connected to a Edimax router which is conneted to the ISP (with their own modem). Now, the Edimax router is ...
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299 views

Route problems with OpenVPN through a local Astaro firewall

I am trying to connect to a OpenVPN server on my Windows 7 desktop though my Astaro (ASG) Firewall. I got it setup and can connect just fine but I can't surf the web. I can ping websites like ...
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105 views

Blocking/traffic-shaping of an Elastic-IP URL

I'm interested in block or traffic-shaping connections made from my system to a host given by a URL. The problem is that the URL is re-mapped to a different IP address every several minutes (I ...
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239 views

Public - Private networks behind NAT Modem using OpenVPM – Shorewall

I have been asked to configure a firewall between the public and private parts of a network for a small UK charity. The only imposed requirements is that the firewall must allow access using VPN into ...
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222 views

Cannot properly use Gigabit LAN, firewall & switch, home network

I have a netgear prosafe 8 port vpn gigabit firewall and a netgear prosafe gigbit 8 port switch on my home LAN plus a UBEE cable modem. The connectivity of these devices are as follows... ...
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277 views

Windows Firewall with Advanced Security Block certain IP's on port 21

Windows by default blocks all IP's. I think I made it so that now my advanced firewall is allowing all IP's, but when I add a block rule it doesn't actually block the certain IP. I am using FileZilla ...
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1k views

Lync client 2010 and VPN firewall rule

I am running Lync client 2010 (4.0.7577.4598) on Windows 7 x64. The server for this is a corporate one, and in parallel I use a Juniper VPN to access the corporate intranet and other resources. ...
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1k views

Soluto installation fails with “Check your internet connection or firewall settings”

A few days ago, I wanted to install Soluto. The installation failed with this error message: Check your internet connection or firewall settings! Because everything was fine with my connection, ...
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130 views

Prompted to accept incoming network connections for an application defined in firewall

Each time I boot, I am prompted whether I want to accept incoming connections for the application. I have already added manually the application to System Preferences -> Security & Privacy ...
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2k views

Windows 7 Firewall blocking port even with inbound allow rule

My Windows7 firewall is blocking access to a SQL Server database on a remote server via SQL Server Management Studio. I'm VPN'd to the network the server is on, I can ping it, and I can transfer files ...
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219 views

Allow only HTTP/HTTPS comunication with Agitum Outpost Security Suite Free

Hi I use Agitum Outpost Security Suite Free and I would like allow only HTTP(80) a HTTPS(443) protocols for IN/OUT and also allow local ports for Oracle database, etc. I try use Network Rules -> ...
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254 views

Can ipmasq and ufw be used together?

If both ufw and ipmasq manipulate iptables, can I use ipmasq for a quick easy setup and then use ufw afterwards to add security or will the two just trample all over the iptables "stuff"? I'm playing ...
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358 views

Little Snitch: how to selectively allow a single script to access the internet?

I have a python script that accesses the web and each time it launches I'm prompted by my Little Snitch to allow the connection by Python. I don't want to allow globally allow Python to connect, ...
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882 views

wvMaxima Error: “Not Connected To Maxima” on Windows

Whenever I try to do anything with it, Maxima gives the error: Not Connected To Maxima I've looked around, but I couldn't figure out how to fix this on Windows. The only results I got were for ...
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261 views

Can you use the Windows 7 firewall to close ports over VPN?

I use VPN connection (specifically ipredator) for browsing over unsecured WiFi connections from my laptop (in coffee shops, etc.) - but at the other end of the VPN connection, all my ports are open to ...
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225 views

The OS X firewall causes certain applications to hang, only while AirPort is connected. How do I find the cause of this problem?

I'm experiencing three strange problems on OS X (Snow Leopard), which only appear while I am connected to a wireless network over Airport. The "Security" tab in System Preferences takes about 1 ...
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2k views

How to set up port forwarding and firewall settings for torrents using Transmsission on Mac OSX 10.5.8 with Netgear Wireless Router DG844GT?

I have picked up bits of advice here and there on the internet and got someway through this tortuous exercise (after it took 18 hours to download the first torrent I tried yesterday - magnet-link for ...
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5 views

In GUFW, the Ubuntu graphical firewall app, how should I interpret the “report” tab?

Pretty basic question - I've looked at the Ubuntu documentation wiki (which is the documentation linked from the gufw.org website), but it doesn't even mention the "report" information never mind ...
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4 views

What affects the state of a port besides csf firewall?

I'm on a server that uses csf. Within which, when I include port 80 in the "Allow TCP Incoming" list, port 80 is still closed when I port scan it.
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20 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 ...
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10 views

One way comunication in routed network

I have this network with two subnets 192.168.0.0 /25 192.168.0.128 /25 on both router i have ïnstalled OpenWrt. On right router is set routing to .128 network. Left router is wireless client ...
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6 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 ...
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12 views

DNS Address could not be found - firewall

I'm using FortiGate 80C, have face this error when browsing. This message appear, then after few second it will redirect to the page. My question is why does this error occur and how to get rid of ...
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25 views

Detach my Modem from my Router. Adding a Firewall-Switch. Adding a second router

I have a MODEM/ROUTER from Comcast. I want to get rid of it. My purchase list includes... ARRIS SURFboard SB6190 DOCSIS 3.0 Cable Modem JUNIPER SSG-5 Firewall/Switch I already have a D-Link ...
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46 views

Something is blocking certain IP addresses on Windows

I'm using Windows 7 and something is blocking one specific website address. I've checked Windows firewall rules hosts file entries Policy group rules I can ping that site and it responds. I can ...
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15 views

Commonly open ports in restricted wifi networks

Which ports except for 80 and 443 are commonly not blocked in open wifi networks? I want to set up a OpenVPN Server on such a port to get around restricted networks. I have experienced the issue that ...
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14 views

Firewall Sonicwall NSA 250M VPN

I use a Firewall soniwall NSA250M on which I have set up VPN access. From my home I can connect without concern but once at the office and connected to the internet I arrive to open the VPN tunnel. ...
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20 views

Opening port on Comcast modem/router connected to Netgear Prosafe firewall

I've been unsuccessful in opening ports on my static IP address. Add advice on my setup would be appreciated. Static IP -> Comcast Modem -> Firewall -> Group Computers (Windows Firewall) Comcast ...
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24 views

Setting up firewall while daisy-chaining two routers via ethernet

Due to circumstances, I will shortly have two routers (replacement coming in the post for old broken one, but I need non-mobile-phone internet access, so have to buy another)... This got me thinking: ...
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36 views

Inbound and outbound firewall rules

I am in the middle of writing a Powershell script to configure DMZ servers on Windows Firewall for 2012 R2. Looking at some older scripts I have written I seem to have added a lot of inbound firewall ...
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48 views

iptables should block ssh, but port is still open

I am trying to get the port knocking service working on my raspberry pi. I have edited my iptables rules to block incoming traffic, but I can still ssh into the pi from my macbook. I should NOT be ...
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15 views

Server 2012 r2 — Opening firewall on remote Server Core machine for MMC (Comp. management) access

MCSA student here. I'm having some difficulty with this one. Same subnet and workgroup. Server 1 is a physical 2012 R2 server. Server 2 is a Server Core running as a VM on a workstation. As part of ...
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27 views

Windows firewall slows down Virtual Box Host Only Network with named virtual hosts

I'm trying to port my development environment from linux to windows and experiencing problems with the windows firewall. I set up a VirtualBox machine with a host only network adapter and a static IP ...
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5 views

iptables forward combined with bfifo doesnt work

I have 3 interfaces, 2 internal(wlan0,wlan01 )and 1 external (eth1) and i want to configure traffic from eth1 ,so i use iptables to send all outgoing traffic from the internal interfaces to eth1: So I ...
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28 views

Port forwarding in windows to device

Hi I'm trying to access remotely to the server of a device connected to Windows by Ethernet by port:80. I have already port forwarded that port to the PC and set the Firewall to allow access thru that ...
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11 views

set tun interface to visit the internet

I have a tun interface named tun0(10.0.1.1),and a physical interface named eth1(10.110.136.76) on my computer. I want to use the tun0 to visit the internet. Firstly, I create and set the tun like ...
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7 views

CSF - making outgoing 443 connections

I've installed CSF firewall on my linux, and I have set in my csf.conf: # Allow incoming TCP ports TCP_IN = "22,25,53,80,110,143,443,465,587,993,995" # Allow outgoing TCP ports TCP_OUT = ...
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13 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): ...
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20 views

Add link to Kaspersky whitelist in order to unblock it?

This window appears every 10 seconds saying "Malicious link blocked". I believe that the link is secure. How could I add this link to Kaspersky whitelist in order to unblock it? Note: I'm using ...
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13 views

how many rules iptables or single chain support

I have multiple user (approx 800 users), I am developing IPTABLES firewall for MAC address based filtering. My Question is HOW MANY RULES CAN I ADD IN A SINGLE CHAIN AND HOW MANY RULES CAN HANDLE ...
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19 views

Is it possible to make Norton 360 firewall always ask if an application should be allowed to communicate?

I remember back in the days firewalls would always ask the user if an app should be allowed to connect to the internet. Norton 360 firewall essentially "allows" all the traffic and you have to go to ...
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33 views

Cannot ssh from host to guest os in Virtual Box

I have a windows machine with virtual box installed. I have ubuntu VM within the virtual box. If I setup my vm's network to use NAT, and setup port forwarding to forward from my localhost to the ...
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24 views

How do PING responses disabled from different subnets?

I found that: I can ping my Windows box A from another computer B in the same subnet. This implies, that echo server is running. I can open remote desktop on A from another computer C in another ...
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30 views

Does KVM put a firewall on top of guests?

I have been working on a project to build an all inclusive server in my home. This is to augment my networking/vm knowledge, and save my Mother money on our cable bill. It right now consists of: ...
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39 views

Wyse Device Manager Disable Wake On Lan

I want to disable Wake On Lan on all my ThinClients without going to each and every one of them and disable WoL in the bios. Unfortunately I couldn't find any setting in the Wyse Device Manager to ...
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20 views

Layer 3 switch with ACL or firewall

I have a layer 3 switch with VLANs that have ACL, do I need to get firewall hardware or will ACL do? This is for a home network.
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23 views

Windows firewall: Allow application to only connect on public network and one port on private network

I have an application that requires internet access and has a web GUI. The internet access should go through a VPN. The VPN is a public network in Windows. I configured the firewall to only allow ...
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33 views

Block all network traffic (including system services) except a single application

We have an IOT like application running on around 300 Windows 7 PCs. The PCs are connected to our server via a mobile VPN connection. The only network access for the PCs is to/from the LAN at the end ...
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11 views

What are the drawbacks to use bridges to segment a network?

I am building a network which consists of a gateway (192.168.0.254) to a WAN which provides via DHCP the gateway address for my network. This is the part imposed on me. a central machine running ...
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34 views

Blocking Internet access by MAC host Cyberoam

There is a cyberoam router. A firewall rule exits which drops all services from specific host. Now the problem is if I specify the host as "IP host" and enter the source ip of particular node. The ...