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

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How to use new keyword dummynet-anchor in pf.conf of Mac OS X

Mac OS X introduced a new keyword “dummynet-anchor” in pf.conf file, which not used in FreeBSD and OpenBSD. The ipfw was removed in Mac OS X 10.10, How to use “dummynet-anchor”? UPDATE: What portion ...
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74 views

Apache Spark cluster through a proxy?

This is more a speculative question to those with more networking / Apache Spark experience than me. My current setup: two 32GB, 4GHz Core i7 machines I'd love to tie into a Spark cluster. However, ...
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1answer
137 views

Securing remote access to local server behind NAT router

I want to remotely access a Linux server in my private local LAN via HTTPS and SSH. The server ist connected to my DSL router (German Fritz!Box). As I can't directly access my server because of ...
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1answer
54 views

Two network connections - how do I control what traffic goes to/from each of them?

I have two internet connections on my computer (one WiFi and one with ethernet cable). The issue is that I want to make sure that one of the connections (the WiFi) is "reserved" to only handle all ...
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1answer
117 views

No incoming connections allowed to Windows 7 Embedded

The PC with which I have network troubles has Windows 7 Embedded (WES). From this PC it's possible to connect to other machines and devices through different ports, but this machine doesn't allow ...
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1answer
453 views

How do I properly start a vnc server on fedora?

I don't remember this being difficult last time I used vnc. This is what I've tried (I'm running fedora 21)... First off, install a vnc server. sudo yum install tigervnc-server ... y Now to ...
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1answer
46 views

What is needed to access a CCTV system (based on a static IP)?

I was wondering (since I'm a beginner or intermediate in computer networks), what do you need to access a CCTV system. Let's suppose we have a CCTV system configured with an username and password on ...
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1answer
12 views

_name (underscore prefix) vs name what's the difference of the option name for firewall configuration in OpenWRT?

I saw different writing of name option for OpenWRT firewall configuration, seems all work fine. What's the meaning of the different formats? _name option '_name' 'Don'\''t track NETBIOS Service' ...
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103 views

Block archive.today From Crawling My Site?

My website is being scraped by archive.today. This site is similar to the reputable archive.org, but archive.today does not obey robots.txt, spoofs a generic user-agent and tried to hide its IPs. The ...
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19k views

Utility to open TCP port to listen state

Is there some basic utility to open a specific network TCP port on my machine? I need to test how my program deals with ports on listening state..
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13 views

Publis camera server behind not public ip

i have a internet cable service so i have a private ip. Because of this i cant publish my security camera web aces (ports 1053,1030). Is there some way to "tunnel" this service using some other tool ...
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81 views

Mikrotik Netmap to Windows server 2008

I have Mikrotik RouterBoard RB2011UIAS-2HND-IN as my router and Windows Server 2008 as DC. I want users outside local network be able to connect our chat server placed on Windows Server. Chat server ...
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832 views

configure iptables to block all(as much as possible) bittorrent traffic

good day all This is my current iptables setup Generated by iptables-save v1.4.7 on Wed Apr 9 13:50:31 2014 *filter :INPUT DROP [0:0] :FORWARD DROP [0:0] :OUTPUT ACCEPT [0:0] :LOGDROP - ...
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1answer
144 views

How do I access Jira from my LAN?

I purchased the server version of JIRA Agile and have it running on my Windows 8.1 x64 machine. I have the Catalina service in conf/server.xml file set to port 8100. I also modified the Windows ...
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4answers
2k views

How can I scan from Canon PIXMA MX700 without disabling OS X firewall?

I have a Canon PIXMA MX700 connected by ethernet. When I first bought it I was using OS X 10.4, and scanner-initiated scanning worked fine. After upgrading to 10.6, neither scanner-initiated or ...
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3answers
383 views

Secure FTP Port between Filezilla and Godaddy

I recently upgraded to Filezilla 3.0.x I am getting "filezilla error: Failed to retrieve directory listing godaddy" errors from Filezilla which i believe is because of a blocked port on my firewall ...
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2answers
828 views

What might these connection attemps mean?

Yesterday I opened a port on the router, forwarded to LAN IP 192.168.1.201 and blocked the ADSL company password to access the router. There is no other open port on the router. This log is from the ...
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3answers
4k views

Allow dropbox through windows firewall when everything else is blocked

Using this solution I've blocked all internet access with windows firewall and made an exception to allow local subnet traffic through the firewall. How would I allow dropbox through the firewall as ...
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43 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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4answers
60 views

Does Apache need firewall access for code server requests?

Would just like quick clarification on something. For a development stack such as LAMP or XAMPP for a local server; does Apache require access over the firewall (e.g. port 80) if, for instance, some ...
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32 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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357 views

Is this firewall completely secure?

I'd like to know if there's any holes/flaws in this firewall setup. I want to lock down the server as much as possible so it is impossible to hack in to. The only services running are openvpn and ssh. ...
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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 ...
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35 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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104 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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1answer
251 views

Group Policy settings for the Windows Firewall are sometimes ignored on startup

We deploy our Windows Firewall settings (among other security settings) as local policies to our machines. They are not part of a domain. There is a weekly restart configured for each machine, ...
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79 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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117 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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57 views

Firewall and Torrent

I use my university internet network and all incoming connection is blocked on every port.(they use netasq firewall) They have no other restrictions which stops me from using a torrent client. Using ...
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2answers
30 views

is it possible to use a firewall to view list of accessed websites?

all i want is the list of websites that are accessed. i run a small enterprise and have the authority to install software since am the admin. please note that the requirement is not to block access to ...
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3answers
142 views

Windows firewall that blocks programs interactively [closed]

I'm setting up a windows machine for a friend and wanted to install a free firewall. The trick is, I need the firewall to be interactive in that if a program requests to get 'out' the firewall gives ...
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1answer
43 views

how does peer 2 peer get past firewall

hi this has my head wrecked and cant get my head around it 1st some assumptions 1. if a computer out in the big bad web tries to send my computer data my routers NAT-PAT firewall will ingore it and ...
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2k views

Connecting PS4 through SonicWall TZ100 firewall | Sony Error NW 31162-3

I am attempting to Connect my PlayStation 4 through my SonicWall TZ100. I have below Ports Forwarded. I'm not great with Packet capturing, but as far as I can tell nothing is getting bounced that is ...
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70 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 ...
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What's the closest equivalent of Little Snitch (Mac program) on Windows? [closed]

I'm using Windows 7 and would like to have a feature like Little Snitch on the Mac that alerts you whenever a program on your computer makes an outgoing connection. Description of Little Snitch from ...
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1answer
38 views

Remove iptables rules from recovery system?

I have a remote dedicated server and accidentally added some iptables rules that killed network access. I am only able to access SSH in recovery mode, which gives me access to the filesystem. I can't ...
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1answer
350 views

Redirect traffic through port 80

My situation is as follow : I have a client on a network where only port 80 is open. I'd like to be able to connect to a FTP (port 20 - 21) from this client. Is there any way to redirect ...
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2answers
102 views

Blocking 127.0.0.1 in iptables?

I'm in the process of setting up some rules for iptables. Not wanting to make any errors I am currently only logging activity. The logs have shown a number of entries for 127.0.0.1 hitting my rules: ...
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29 views

On Comodo Internet Security to restrict an application

I've installed Comodo Internet Security a couple of days ago on Win 7 64bit Home Premium. One of the features is Defense+ and Auto-sandbox with specified level of restriction. Recently I have ...
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252 views

how do torrent clients circumvent router's firewall?

Could anyone please explain me how the deluge torrent client can get incoming requests to my local machine from the Internet, while I'm behind router's firewall and do not have any port forwarding ...
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45 views

How to print iptable firewall rules?

How does one print or dump the firewall rules being used by iptables in an effort to trouble shoot connection problems? I'm fairly certain its going to include -L or --list, but I'm not sure of other ...
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31k views

Why does the Mac OS X firewall dialog recurringly pop-up and disappear by itself (without letting me respond) under Snow Leopard?

From time to time, I'll be on my Macbook using a program that accesses the network – whether Firefox, or Sony's Reader Library – really, it seems like it could happen with any program that ...
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1answer
34 views

Is blocking / allowing by IP using .htaccess (or equivalent) enough to secure a resource on a web server?

Currently in the process of setting up a web infrastructure to host my web application where security is the most important factor and I need to be able to allow only specific IP addresses to a ...
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3answers
7k views

“Play on another device” function not working with Samsung Allshare

Briefly I can't get work "Play on another device" function More detailed My Samsung TV (which support network) and PC are in the same network. The problem is, I can play PC contents from TV. But ...
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76 views

How to configure Windows Firewall to allow all ports in use by IIS Express

My understanding of this technet article, per the page that brought me there*, is that I can configure the Windows Firewall to allow all inbound traffic on any port being used by a specified ...
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3answers
2k views

Blocking ads at the firewall level

Possible with the proper firewall rules or proxy setup? For example, when an ad loads, at the bottom you can usually see the domain it is loading itself from. I figure block the major ones in a proxy ...
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1answer
3k views

Block multiple programs through Windows 7 firewall quickly

I know how to block a single program through the firewall quite easily, but I have to do this for several applications now and the process becomes tedious. Is there any way to block multiple programs ...
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3answers
16k views

How can I restrict windows 7 to only use the local subnet, but block the internet

I want to block all internet connections to and from my windows 7 machine, but allow it to access everything on the local network. The local network is behind an Apple Airport Extreme. What is the ...
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1answer
95 views

how to save iptables rules permanently?

I want to keep some iptables rules permanence, so I just only add the rules manually: /sbin/iptables -I OUTPUT -p tcp --sport 80 -j QUEUE I am sure that the command works, because I could see it ...
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2answers
1k views

blocking port 80 via iptables

I'm having problems with iptables. I am trying to block port 80 from the outside, basically plan is we just need to Tunnel via SSH then we can get on the GUI etc. on a server I have this in my rule: ...