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

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Eset Smart Security Personal Firewall crashes with a bluescreen

When I plug my internet cable in computer, the computer goes to BSOD and says UNEXPECTED_KERNEL_MODE_TRAP. I am sure it is due to Eset Smart Security 8 Personal Firewall Because of when I ...
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1answer
55 views

topology for an unmanaged switch (firewall)

I'm considering an unmanaged switch. My understanding is that many of these devices explicitly lack a firewall. In that case, what do you use as a firewall? I suppose one option would be to use a ...
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1answer
180 views

Is it OK to have kerberos-sec port open to the Internet in Mac OS X?

I’ve just bought my first Mac I want to connect it directly to the Internet in a colocation facility. Running nmap against it shows: Starting Nmap 6.40 ( http://nmap.org ) at 2015-02-18 21:54 GMT ...
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2answers
37 views

Access FTP from outside the LAN

I've a Centos Server. If login via the private IP while in the LAN, I can connect to FTP. If I try to login when outside the LAN, I receive a timeout error. iptables is not configured, so it ...
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18 views

How to diagnose unconnectable port from client side?

I have a machine that can't connect to a certain port number on a server. I've disabled all firewalls and security software. It can connect just fine to 80 and 443, but not 7777. Is there a tool or ...
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96 views

Open ports with iptables — still closed

I'm trying to open some ports for a gameserver, which is running on my Linux vServer (Ubuntu 14.04 LTS 64bit). The game needs the following ports: 16261 (UDP) 16262 (TCP) // Player 1 16263 (TCP) // ...
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68 views

Why is the Windows firewall not blocking outbound ports?

I use the following rule to block all outbound communications to remote 80 ports. I want to use this approach to prevent web requests initiated from this computer. But it seems I still can access web ...
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64 views

pfsense for its firewall capabilities on small network

I have a small home network of approximately 3 windows machines and 1 pfsense freeBSD (dell laptop): q1. The cable modem is connected to the NON-internet port of the wireless router. Is this the ...
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2answers
202 views

How to use iptables to allow traffic only throug ONE SPECIFIC VPN

I'm trying to allow all traffic from my Banana PI running Lubuntu to only go to my LAN or otherwise through an VPN Server. I'm following this guide: ...
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21 views

Windows Firewall Troubleshooting

I can't seem to successfully allow traffic on specific ports. I've setup an FTP server (IIS). Windows 8.1 x64. I've tested it, and it works fine when I disable Windows Firewall. But when I enable ...
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3answers
84 views

Trying to set up a home webserver using Ubuntu and Apache2

The steps I’ve taken: Installed Ubuntu on old laptop. Given the laptop a static IP address in local network of 10.1.1.12. Add a service to Netgear DG834GU router for port 80 TCP/UDP Set up a ...
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1answer
18 views

FTP and WWW services don't acknowledge connections

I have Lubuntu 14.04 LTS with vsftpd and the lamp stack (apache2, etc.) installed. Everything works fine on the LAN. Externally, the services don't acknowledge connection attempts. I can see packets ...
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49 views

How to make my local tomcat server accessible to www?

So I have my "Hello World" Java project, using Intellij Idea, tomcat 7 is running. OS Windows 7. When I go to http://localhost:8080/ from my PC, it works fine. Now, I want the world to see my ...
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1answer
43 views

How to stop mac from auto port forwarding requests from localhost?

I have an application that is running and listening for local requests on port 4001. Whenever I start a second application to place requests through port 4001 my mac appears to be automatically ...
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1answer
66 views

iptables drop packets by IP protocol type

Is it possible to have iptables rules to drop packets by IP protocol type as described in [http://www.tutorialspoint.com/ipv4/ipv4_packet_structure.htm]? (ICMP is 1, TCP is 6 and UDP is 17, but what ...
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7 views

VPN Connections and web timeouts

We've got a VPN connection to our office. From our office, we have access to a clients test website by their network firewall allowing traffic from our firewall/network. If I am at the office, I can ...
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56 views

How to configure iptables to set public IP for outgoing traffic from private IP

I have multiple public IPs at home: 1.1.1.1 (main IP) 2.2.2.2 (additional IP) In my local network, I have two computers, let's say 192.168.1.1 (PC1) 192.168.1.2 (PC2) Infront of the computers I ...
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79 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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103 views

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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1answer
142 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
55 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
127 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
498 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
47 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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104 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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1answer
121 views

RPC Connection Filtered with no Firewalls

I have a workstation (PC1) that cannot communicate with a domain controller over RPC (TCP/135). C:\PortQryV2> portqry.exe -n 192.168.1.1 -p tcp -o 135 Querying target system called: 192.168.1.1 ...
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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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89 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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2answers
305 views

Securing a Nintendo Homepass Network

Some Nintendo 3DS users have been setting up wireless access points to trick their handheld console into treating the AP as an official "Nintendo Zone" AP. This has become known as a "Homepass" setup. ...
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1answer
162 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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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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33 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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36 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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108 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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3answers
400 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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84 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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128 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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31 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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2answers
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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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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1answer
40 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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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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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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263 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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2answers
46 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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81 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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1answer
39 views

Windows 8.1 third party firewalls and Hyper-V virtual switch compatibility

I have the following problem: Hyper-V is installed on windows 8.1 with an external virtual switch. Everything works fine with windows firewall When I try to install any third party firewall on ...
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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 ...