A firewall is a piece of software that controls what connections can be made to and from a network.

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36 views

ASA Cisco VPN Connection drop when user switch is attached

Have established a VPN connection (albeit over satellite) between a Cisco ASA 5505 (running IOS 8.2(2) and the mother ship in the U.S. Firewall issues DHCP to internal interface users and the inside ...
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31 views

Windows Firewall - How can I have multiple public profiles, or multiple private profiles, with different rules?

Windows firewall only seems to have a few options for profiles. Your public, private, and domain profile. What if you want to have 2, or even 3 private profiles though because you move around to ...
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34 views

Cannot unblock Windows firewall port for specific program

I am developing a custom server application hosting HTTP (though not HTML) requests on port TCP 5123. If I add a Windows firewall rule to allow incoming connections to this port for any program then ...
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68 views

How to easly block user from using surfeasy VPN

Does any one know if its possible to block user from using using surfeasy VPN to download pirate movies from the internet?
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55 views

port forward from wan to lan

How to create rule to forward all incoming 80 -port traffic from public IP address to another server in the LAN via Ubuntu linux firewall (using webmin). Server have two IP addresses public and ...
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77 views

Windows 7 ports Blocked even after disabled Firewall

    I am installing 3CX PBX on a Win 7 Pro Machine, in a SBS2011 domain. The problem I am facing is the Ports that 3CX uses are blocked. This Windows 7 , is VM in XenServer 6.2 ...
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79 views

Firewalld - allowing ICMP in custom zone (centos 7 / redhat 7)

I want to enable ICMP echo-reply in a zone defined by source. I have a zone MONITORING where I want to permit some services like mysql and echo-reply. Permiting services like mysql is simple, but I ...
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23 views

How to portforward in Tenda TEI480T+

I just want to ask if anyone has a tenda router TEI480T+ dual wan. I have a problem regarding in portforwarding (virtual server in this router) because even I already added the IP address of the PC ...
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23 views

Always allow a program to act as a server

I'm coding some small application. Basically it listens for incoming tcp connections. I always get this screen: I always press the accept/allow button but it keeps asking every time I start the ...
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54 views

Disabling SPI and QOS on my router for another feature?

Well, I purchased a D-LINK DIR-655 model C router and I really like it so far. The only issue I have is that there is a function called "True Gigabit Routing Connectivity" that does this When this ...
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82 views

Firewall is blocking packets for hMailServer

I installed hMailServer on a Windows 7 (SP1) machine for mail delivery only inside a local network. After configuring a pair of mailboxes, I also configured a Thunderbird client in the same machine ...
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44 views

What settings are required for VMware Workstation shared VMs to be accessible with ZoneAlarm Free Firewall installed?

I have Workstation 11 installed on a Win 8.1 Pro system. I just installed ZoneAlarm Free Firewall 2015 and now can no longer access my locally shared VMs, either from the machine they are installed on ...
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26 views

Can softwares access internet through svchost without firewall attention

Can softwares access internet through svchost without firewall attention? I have added one of my programs in the Kaspersky's firewall and I set it to deny access to internet. But now I think it is ...
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51 views

Cannot open port 25565 and others

I try to open my Minecraft server and my gmod server ports. Now I only try Minecraft and I tried to open in 192.168.1.1 in Windows firewall. I went to this site: ...
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49 views

Which ports to open in order to access a Windows Server 2008 shared drive through VPN?

There are two servers, A and B. The networks of those servers are connected through VPN. Each network is protected by a firewall and all ports are blocked. I am the owner of server A, and ...
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46 views

Ports not opening correctly

I am trying to open up ports to run a program but it won't work. I am trying to open up port 80 for testing, but even that didn't work. Here are the steps I'm going through. Open windows firewall, ...
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30 views

Connect 2 Networks and restrict acces

The Setting: 2 apartments where each has it's own internet connection over an AVM Fritz!Box. I'd like to connect both apartments with a network cable. In apartment 1 is a NAS wich should be ...
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54 views

How to debug “SIP registration failed”?

My SIP phone, which I use from Turkey with a virtual UK number, has recently stopped working with "SIP registration failed" and the supplier of the UK number has told me the times of the last ...
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52 views

Route Windows application to specific network interface

I have two connections (one wired, one wireless, if relevant). One connection passes thru a proxy (which is not under my control) and is domain controlled. The other is a simple wireless connection ...
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71 views

Connections from virtual host to internet OK, but to rest of LAN, broken

In a notebook running Ubuntu 14.04 I have installed VirtualBox and created a virtual server with Windows 7. The PC is connected to a 192.168.x.y LAN. The virtual server is in a host-only network with ...
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191 views

iptables snat does not change source IP

I am on ubuntu (with IP 10.0.0.1) trying to snat packets going out from port 9090. I want to change the source IP to 10.0.0.2 I have added the following rule through iptables: # iptables -t nat -A ...
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28 views

A Linux Firewall/Web-proxy suited to a blacklist-by-default policy for a single desktop

I am looking for a (suite of) tool(s) to strictly control outbound access to a small whitelist of globally deployed web-sites, for one Linux desktop (with one user). I am looking for a solution with ...
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138 views

Settings for printing remotely over the internet to HP Laserjet from one IP address

I'm trying to print from an Amazon/AWS EC2 instance running WinServer 2008 R2 to an HP Laserjet on our network. These are the steps taken so far: On EC2, the server services ‘LPR Port Monitor’ and ...
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54 views

iptables do not block all traffic i want to mysql port

Need to block all incoming traffic to port 3306 but two ranges. The thing is I can connect from other ranges anyway!. Think my drop rule is ok. Why is this? ]# iptables-save # Generated by ...
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89 views

Open firewall port on Mac OS X

I need to open port 8181 on my Mac OS X. On Linux, I would do: iptables -t filter -A INPUT -p tcp --dport 1664 -j ACCEPT iptables -t filter -A OUTPUT -p tcp --dport 1664 -j ACCEPT How do I do this ...
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325 views

License Manager for Matlab is unable to connect to the license server. License Manager Error 96

I am using Matlab R2014a. The license has been provided by the college. As soon as I launch the software, I get a following error message. I tried to ping the server addresses, and the were ...
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15 views

Making a server “read only” except for me (what the inbound/outbound rules mean)

I have an ec2 instance. It will start a webserver, and my public ip is myip. I ssh into my machine. What should incoming and outgoing rules? Why? I want only my ip to be able to change things on the ...
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18 views

Database showing a list of current vulnerabilities?

I have been recently building my own firewall, but I was wondering is there a website or database which lists majority of the known vulnerabilities so I could obviously update my firewall based on the ...
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14 views

vSphere Directpath NIC isolation

I am building an home server, and I am planning to use VMWare vSphere to create multiple OS that will have precise tasks on the server. On the server, I'd like to have a firewall-antivirus using ...
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404 views

Can't telnet to port 3389 on computer on same network

I have two Windows 8.1 pro computers on the same network using the same FIOS router. On the first computer, I can telnet to localhost 3389. On the second computer, I can't telnet to the first's IP ...
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11 views

Can you add a proxy exception with an exception?

Is there a way to add an proxy exception with somewhat of a case match so to speak? so say I want to allow all https, I would use: https://* but I dont want it to apply to https://testsite.com ...
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43 views

Turning off windows firewall

I did the most idiotic thing I can think off: created a firewall rule for a windows azure VPS to block all incoming traffic, on all ports. Now I can't access the VPS, obviously. Any idea how to ...
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82 views

My router bypass the DNS servers I manually entered

I wanted to change the default DNS so as to use OpenDNS ones. I went to the router (192.168.0.1) and then put the DNS adress of OpenDNS in the WAN connection settings. It works and my computer ...
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16 views

iptable definitions for routing and defence

I'm attempting to configure a firewall on my laptop that allows for routing. The main trick is, I don't want to allow for connections to be made that do not fall under the ESTABLISHED,RELATED ...
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33 views

browsing difficulties airline websites blocked

I am having problems connectiong to various airline websites. Problem is only on my desktop and not on a laptop which connects to the same router. Problem is irrespective of browser - ...
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17 views

Re-connect to corporate firewall

When I power on my PC, the default internet browser open the page: http://go.microsoft.com/fwlink/?LinkID=219472&clcid=0x409 then I have to enter my credentials to access internet. Every time, I ...
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38 views

Set a max for number of failed password log in attempts in juniper srx

Normally my Juniper-SRX doesn't delimit number of failed log in attempts. I want to know if is there any way to change settings in a way that after for example 3 failed attempt, that user locked for ...
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42 views

Netsh firewall: allow a port just for a single interface

In Win7 with netsh I would like to allow a listening port only on a single interface and block it on all the other interfaces. With the GUI this is possible using the "Protected Network ...
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36 views

Open ports for Age of empires in ubuntu router using iptables

The purpose of this question is to learn how to correctly use iptables. As I am currently living in the dormitories in the University and I am using a small netbook as a router to provide wifi in my ...
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63 views

How to ban thousands of IP addresses on 2008 Server

I'm trying to block the Tor Project network from my webserver as many spam/malicous scripts are using it to flood my API. I've tried almost every method possible it seems there is NO WAY to append ...
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51 views

OpenShift Origin: isolating application containers from local network

My network with OpenShift Origin is setup like this: A firewall running pfSense (172.16.0.1 + external IP) A ProCurve J9029A switch (if that helps...) An Ubuntu-based Virtualbox hypervisor ...
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74 views

If my firewall is switched off,what else could be blocking access to mysql?

I want to have remote access to my mysql server but when i telnet my server from my computer i get this C:\Users\USER>telnet 197.000.0.00 3306 Connecting To 197.000.0.00...Could not open ...
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85 views

M0n0wall Firewall Not Allow Traffic from Different Networks

I have a fairly simple home network set up. First off I have a VMware ESXi server running some VMs. I have an Extreme Networks x250e-48t switch doing all of my routing between the several VLANs I ...
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30 views

Firewall Ubuntu UFW port 22

I use ufw firewall, on port 22. I have given the command: sudo ufw allow from a.b.c.d to any port 22. sudo ufw status output looks like: To Action From 22 allow a.b.c.d The OS is ...
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66 views

Mac port issue with Nginx and Tomcat

Configured Nginx to interact with Tomcat on port 9090 on mac. This configuration works when querying on localhost. Fails to work when connecting from outside, until firewall is disabled. I have ...
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38 views

Opening a firewall port on virtualized Windows 7 running on Mac OS X 10.9

I am currently using a virtual machine running Windows 7 (32-bit) which is hosted by the VirtualBox application from Oracle; this latter is installed on a MacBook with the last up-to-date version of ...
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29 views

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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92 views

Output port redirect with firewalld?

I'm used to iptables and I can't find a way to do this with firewalld. I need to redirect the output traffic of one port back inside in the same port, basically this: iptables -t nat -A OUTPUT -p tcp ...
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101 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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20 views

I have a Windows Server 2012 which I would like to access only port 3389 and block other ports

I have a Windows Server 2012 which I would like to access only port 3389 and block other ports. Is this something that is doable? Maybe with the Windows Firewall?