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

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2answers
361 views

Transmission-Daemon does not upload, but can download

I have just installed transmission-daemon on a Raspberry Pi running Raspbian (Jessie). When adding a torrent to the web interface, downloading works at high speeds, but it doesn't upload anything at ...
1
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0answers
230 views

How to create firewall rule on virtualbox windows host to control linux guest access to internet?

I have a windows 7 64-bit host (all outbound connections generally blocked) and run virtualbox (5.0.1) with an opensuse 13.2 guest and need to create a firewall rule on the host to allow access from ...
-1
votes
1answer
67 views

How to disable UFW on Ubuntu after locking out SSH?

I enabled the UFW firewall using SSH on my server at Digital Ocean running sudo ufw enable. and forgot to allow the ports for SSH, FTP, ... (but allowed port 80). How can I SSH into the server or ...
2
votes
1answer
353 views

VMware Player and Windows 7 firewall

My Windows 7 firewall (the one by Microsoft that is shipped with the OS) is configured to block all inbound and outbound connections by default. Because all outbound connections are blocked, I ...
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0answers
42 views

Configure tomato firewall in VM or Debian / CentOs server

I want to use tomato as my internal firewall for accept/block network packets inside my server system. I know that tomato provides firmware for some routers but I want to do some tricky but don't know ...
1
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1answer
52 views

How to block all outbound connections in windows 8.1 for a specific WIFI connection

I'm travelling around and use lot's of different Wifi connections. When using a general wifi connection everything is allowed. There is only 1 connection (a wifi hotspot connection to my mobile phone ...
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0answers
35 views

Firewall blocks port connection even if I add an inbound rule

I am trying to upload files to a FileZilla FTP server. I have setup in my PC the server and I am using a simple C# script in order to upload files. It works properly when I run the script from the ...
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0answers
176 views

Why apache log “(111)Connection refused” warning when child process is closed

I am running a server using apache, and the apache error log is periodically getting this warning, usually when there are visits to the site, and usually in groups of at least two or three at a time. ...
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0answers
65 views

SSH Tunnel via very restrictive HTTP Proxy/Firewall

I know how this usually works, I've done a lot of investigation and tinkering to get this far and my observations are reproducible. Have a (few) SSH Server(s) Running on port 443 (https), and a few ...
0
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1answer
60 views

force mail program to use wireless and wired connections side-by-side

My wired internet connection at work blocks the IMAP, POP and SMTP ports (the mail server is Exchange) which prevents me from using an email program like ThunderBird. With the internet cable plugged ...
0
votes
1answer
232 views

Using UPnP when Connecting to internet using (Router+Modem)

I want to enable the UPnP to make programs like Gameranger host some games without problems . I am connecting using a Gargoyle router , and that router is connecting to the internet using ZET ZXV10 ...
0
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2answers
429 views

How to allow Visual Studio FTP in W10 Firewall

I'm trying to publish some software to an FTP site with Visual Studio (VS) 2015 community, The output window shows an error An error occured trying to enumerate the contents of folder ''. An ...
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0answers
122 views

How to config Mac OS X firewall to let http (80) request in?

I hava installed xampp in my Mac OS X 10.11 (El Capitan). It works fine when I type http://192.168.0.63 (my IP address) into my browser, but others in the same network can't access through http://192....
0
votes
1answer
54 views

how much of a security risk is turning off the firewall in a modem?

I have a router that I want to plug into a modem/router too (the latter is a poor router) and the advice I'm getting is to set the modem / router to full bridge mode, like so: https://whirlpool.net....
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0answers
76 views

Block Port 4000 on Window 7

On Windows 7 Enterprise 64 bit system Need to block Port 4000. Under system Firewall by creating inbound rules and outbound rules have blocked port 4000 but its not working. Need your advice. System ...
1
vote
1answer
110 views

Network issue - client on Android device not connecting to server on my laptop

I have a server app running on my windows 7 laptop and I have a client app running on my Android phone. Both, laptop and phone when connected to my work WIFI can communicate. I can log it into my ...
2
votes
1answer
874 views

Ubuntu IPTables allow only allow 1 country

So I've been looking around on the net for a script that will drop all traffic to all ports except the http(80) and https(443) ports, and then only allow traffic on all other ports from country x (...
5
votes
1answer
443 views

How to see which applications use “Host process for windows services” to eat metered data?

I have to spend a lot of time on metered connections in a country where data is expensive. I use Glasswire firewall to keep an eye on what software is using my precious data and to throttle programs ...
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1answer
45 views

Unable to rdp after fw change

VM Windows Server 2012 r2 I was able to rdp to this PC without issues until today. While logged in via rdp I was in control panel > firewall and I noticed that there was a message saying 'use ...
2
votes
2answers
83 views

Windows firewall - opening ports by specifying .exe

Normally, you open ports by specifying port number and the protocol - either TCP or UDP. However, Windows allows me to add exceptions by specifying the executable file. How does it work? What happens ...
0
votes
1answer
89 views

Windows port forwading

i got the following setup on an windows server 2012 R2: i have 2 nics: Nic1 has an public ipv4 adress (lets call this 5.5.5.5) Nic2 has an private ip adresse (192.168.2.10) So now i want to ...
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0answers
419 views

how to stop PC from sending ICMP of “Destination Unreachable(host administratively prohibited)”

I'm doing some experiments and measurements. I send some random TCP packets to a laptop(with fedora system), that laptop reacts by sending ICMP packets of type 3 and code 10, which means Destination ...
0
votes
1answer
26 views

Can not access web domain from local computers

I have a WEBserver IIS7 in my local network. When I go to "www.mydomain.com" from a computer inside same LAN I cant access it. If I put in the local IP it works. "www.mydomain.com" do also works from ...
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0answers
38 views

Block traffic when VPN disconnects

I want to connect to a VPN using the command line tool OpenVPN. To stop ingoing and outgoing traffic when the VPN disconnects because of some problems, I want to use the OpenBSD Packet Filter (PF). I ...
0
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2answers
339 views

Some confusion about listening and open ports, difference between listening, open and blocked

I have been strugling for some time now to open ports on some Linux machines and I have followed some tutorials, which I tried in 2 different Linux VMs and failed for either, and after some research I ...
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0answers
33 views

Problems with opening ports on Linux

Basically I have tried every tutorial I could find but I can't seem to open a port in a Linux VM. I tried downloading gufw and opening a port there; didn't work. I disabled gufw; didn't work Set a ...
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0answers
55 views

How to setup a network proxy with a server and RouterOS?

Right now, we have a router with RouterOS which provide network for several machines connecting to it. We have a server connected to the router and we have a software which provide pac http proxy ...
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0answers
59 views

Unable to remove port 22 from firewalld

I am running a VPS that i have gone and installed firewalld on, on this box, the service comes by default with port 22 open so that you can still gain ssh access. I have manually changed the SSH port,...
2
votes
2answers
101 views

Windows 7 cannot establish outbound connections on port 80

I've been pulling my hair too long for this particular problem and now I'm on the verge giving up. Scenario: local network in the workshop consisting of two Linux-machines (one server, one ...
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votes
1answer
32 views

Home firewall with application monitoring [closed]

I'm looking for a way of monitoring http at application level at home. As such I don't want anything hugely complex or expensive - just a way of looking at, say, Facebook usage by device. Any ...
1
vote
2answers
128 views

How to ssh a computer which is behind firewall

Consider I have three computers home my computer at home work my computer at work server my server I can't connect from home to work using ssh because of my company firewall. But I can ssh any ...
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0answers
198 views

tomatousb - Allow only specific IP to connect to other IP port

I'm using tomato shibby on a router, and I'm trying to set some specific rules using iptables to set the following: I have a server, which runs on 192.168.1.2 (LAN) port 2232. Everybody from the LAN ...
0
votes
1answer
980 views

TCP connect: No route to host

I started a tcp server on a host A and then start a tcp client on another host B. Both hosts are in the same LAN via the wireless router at home. the tcp client tries to connect to tcp server on port ...
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0answers
40 views

Skype 443 port filtered

I have Skype installed on a Windows but I'm after a FW 443 port that has the filtering and Skype not working. Apparently it seems that outbound traffic is not working. Is there any way for Skype to ...
0
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0answers
21 views

Unknown UPnP Entries

Was checkout out my Firewall on which I usually have UPnP disabled, but turned it on as a debugging step for an issue I was having. I just noticed three ports registered that I am unsure where they ...
1
vote
1answer
209 views

Why I can't block PING.EXE inbound and outbound traffic?

I want to block C:\Windows\System32\ping.exe for any inbound or outbound traffic in Windows-7. So in the Windows Firewall, I added two rules to aim this goal (one for inbound and one another for ...
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0answers
33 views

How to check all open ports

In our firewall (using Windows Server 2008 r2) we've allowed only port 80 and closed all other ports. How can we test if the firewall is only allowing port 80?
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0answers
127 views

Complete masquerading NAT example using nftables on Linux?

I'm looking for a complete example how to do this using nftables. It should be a DHCP client on the upstream interface, have a 192.168.0.0/24 LAN on the other interface, and also act as a firewall. ...
0
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0answers
40 views

Local host's iptables dropping packets even though router firewall only forwards one port

I have a computer on a small WLAN that is connected to the internet via a router. The router has firewall software and I have set up the router firewall to forward port 1234 and only port 1234 to my ...
1
vote
2answers
165 views

Is a firewall blocking me from accessing VZW's website?

I am not able to get on Verizon Wireless's website http://www.verizonwireless.com/ from any computer on my LAN. Chrome and Firefox just return with a connection timed out. However, the name resolves ...
0
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0answers
153 views

Sophos UTM Firewall unintentionally blocking access

I am using Sophos UTM 9 and it blocks some users' access to our company website while others are able to access it. When a blocked user attempts to visit the website, it shows the Sophos UTM screen. I'...
0
votes
1answer
127 views

Blocking IP address ranges in a Windows 7 VM under Virtual Box

Using Windows 7 installed in a virtual machine built with Virtual Box 4.3, I have created two Inbound and Outbound firewall rules. I need to block two ranges of IP address in the VM. However, ...
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0answers
68 views

iptables SNAT target and TCP ACK packets

I need to establish a TCP connection where the client is spoofing its IP for all outgoing traffic. My first attempt was to add a rule to the POSTROUTING chain like so: iptables -t nat -A POSTROUTING -...
0
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2answers
136 views

Diagnosing cascaded routers

I am running a network containing two routers. The Zyxel P-600 is connected to the DSL line. I attached the Ethernet port of the Zyxel to the WAN port of the second router, a D-Link 605L. Both ...
0
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0answers
65 views

IPSec transport encryption on Windows Advanced Firewall

On Windows Server 2012, what is the way of enabling IPSec encryption (transport mode) between two hosts, while still honoring the firewall allow/deny rules? There appear to be two IPSec configuration ...
0
votes
2answers
30 views

How do I make my computer's firewall let devices on the same network in?

For obvious reasons, I want to access my computer's WAMP server from other devices (a smartphone and a tablet) in the same WLAN. The httpd.conf part is okay, but I can't access my webapp unless I ...
2
votes
1answer
109 views

How to allow only specific applications to access network?

I'd like to let Windows 10 block all connections except those which are instantiated by specific applications. It also has to stop all connections made by Windows itself. I could think of two options:...
0
votes
1answer
260 views

Windows 10 Firewall Commands - Sharing Local Web Sites on LAN

I used to use this series of commands pre Windows 10 in order to enable sharing my development sites on my local network: Open up C:\Users\\Documents\IISExpress\config\applicationhost.config Find ...
0
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1answer
238 views

Firefox: Firefox Sync and Zscaler Firewall/Proxy not working

our network as been recently upgraded with the zsacler proxy solution. I was able to regain internet access by following that thread Firefox: This connection is untrusted + Behind corporate firewall. ...
0
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0answers
59 views

Allowing Outbound UDP 123 - Security Implications?

What are the risks of allowing outbound UDP 123 for an internal server (archive server) to synchronize with the external NTP server. Our internal server always displays incorrect time intervals ...