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

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Im trying to user docker to install cloud9 ide

Im trying to user docker to install cloud9 ide on my centos7 vm. Im using this docker image: https://github.com/kdelfour/cloud9-docker Ive set firewalld to set 80 and 8080 to public, ive tried ...
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1answer
21 views

Remotely accessing OSX machine behind firewall

I need some way to remotely access an OSX machine that sits behind a remote firewall (if it weren't for the firewall thing I could just ssh into it, but I have no control over the remote firewall to ...
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19 views

How to open port in windows for node.js server [closed]

I have my app running on http://192.168.1.6:3000/ . I want to open it on my phone. It doesn't work. When I turn off the firewall, it works! But is there a safer way. I even tried opening up the 3000 ...
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25 views

CS:GO SRCDS and iptables (firewall)

I have very strange problem. This morning I wanted download, install and host small server for CS:GO on my VPS. I used this tutorial: ...
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0answers
20 views

How to fix NAT type-Strict on xBoxOne [closed]

I have a Motorola SBG6580, xBoxOne, directv genie and other deivces, and WOW as my ISP. For the last week I've been getting "NAT type-Strict" on my xboxone which prevents me from chatting and ...
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1answer
26 views

ipfw not available on Mac OS X yosemite?

I'm trying to use https://github.com/apenwarr/sshuttle on Mac OS X 10.10 yosemite. But sadly I couldn't find ipfw. Is there a way to install it or something?
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25 views

Opening outgoing ports on dedicated machine

I have a website where I have been working with another person on a game server listing site. It queries the game servers and shows information etc. Anyway upon talking to the creator of the script he ...
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2answers
35 views

Best way to secure RDP connections WITHOUT VPN?

We are needing to use RDP for a client, but the VPN and internet connection is just too flaky to use VPN anymore. VPN is NOT an option anymore for us. Currently the plan is to open a bunch of ports ...
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28 views

Configure firewalld to distinguish home and public ethernet connection

I connect my notebook via ethernet at home and outside. I want to open some ports for services like samba only at home and not somewhere else. How can i let firewalld automatically detect where i am, ...
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0answers
22 views

Intermittent connection and “Firewall Blocked” log entries on Cisco DPC3939B with firewall “disabled”

First, I apologize if this question seems to be "all over the place". I've tried to sum it up as clearly as I could, but there are a lot of moving parts, so I've tried to be detailed with my ...
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17 views

Sharepoint site and Excel files often prompting for login when accessed from corporate network

Since about one month ago a number of users have been experiencing problems accessing a Sharepoint 2010 system we have hosted externally. They are prompted to enter their login details when accessing ...
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24 views

Remove Avast Firewall NDIS Filter Miniport?

First of all, I would like to know what is Avast Firewall NDIS Filter Miniport(and what the hell it has to do with my pc even after uninstalling Avast IS). Then, How can I remove it from my pc? ...
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23 views

ZyXell ZyWall USG 100 - Port forwarding using router

I have the Zywall USG 100 and a ISP own router. I need to use the firewall but there is a problem: the ISP router "can't convert into a pure modem,". I can only deactivate DHCP and NAPT. And can't set ...
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2answers
22 views

Bridging Firewall to Public Wifi

My building offers wifi to its residents. It is not managed by IT professionals. I would like to use this internet source some of the time, but would like to be protected from machines on that ...
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12 views

BSD Packet Filter Redirect Internal traffic

I'm using OSX Yosemite with Packet Filter (BSD). Is there a way to redirect internal originating traffic (let's say from en1) to lo0 on a specific port for specific destinations? rdr from what I ...
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14 views

How to redirect traffic to a fixed IP address in Fwbuilder

I'm new to fwbuilder and I want to redirect all incoming wifi traffic to my web server. I tried many iptables command but I've failed so I came up to GUI firewall. Can anyone suggest how to do it?
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21 views

Telnet says trying- network issue [closed]

My network resource is telling me that "syn" packet is not being sent from client to firewall. HOw do we go about troubleshooting this, why do a packet capture from the client when we know the issue ...
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1answer
21 views

Block ICMP flood from a specific IP with pf

I'm getting a lot of ICMP throttle messages in my system.log: Apr 11 20:45:28 kernel[0]: Limiting icmp unreach response from 1054 to 250 packets per second Apr 11 20:45:29 kernel[0]: Limiting icmp ...
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1answer
28 views

KODI remote isn't working

I'm trying to correctly configure KORE, the official Kodi Remote app for Android, but I'm unable to do so. My copy of Kodi is installed on a laptop with openSUSE as a base system, and both it and my ...
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0answers
31 views

Find out why I cannot download from a specific site

I'm running Windows 8.1 SL trying to download the Desktop app from: http://www.systemrequirementslab.com/cyri However, when I get to the download page ...
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0answers
31 views

No internet access exclamation mark appears across LAN

I have some problems with my domain network. we have about 100 - 125 PC's in our office and they are connected to domain.we use windows server 2012 as a domain controller.most of the computers connect ...
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1answer
30 views

Synology ssh port receiving too many intrusion attacks, how to ban systematically?

I have a synology NAS which I leave at home, and leave it open so I can access it remotely from the office. One of the useful things to do is enable the ssh port so I can access it with my terminal. ...
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16 views

PF rule using return-rst on Mac OS X does not reply with TCP reset

I'm trying to add a simple PF rule: block return-rst out proto tcp from any to any port 33128 to filter all outgoing traffic to TCP port 33128, and I'd like it to respond with a reset. However, ...
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1answer
36 views

Port translation - how to scatter outbound traffic across random ports?

I would like to be able to PAT such that outbound traffic for a given destination port is translated to some random port within a range on a per-PDU or per-packet basis. The intention is that ...
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2answers
23 views

Repercussions of opening ports for applications on router

I know there's a security risk with forwarding ports on my router to a computer on my network for applications like teamspeak or minecraft. However, I haven't seen any clear explanations of what the ...
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12 views

FTP timeout to web host

Macbook pro 10.9.5 regular web host (cPanel) router firewall set to low machine firewall off proper login credentials Filezilla/Cyberduck Telnet to 198.252.106.222 21 does not connect FTP ...
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1answer
30 views

Can't open Minecraft Server for Internet

I followed all the steps for hosting a Minecraft Server: Allowing connection (inbound and outbound, TCP and UDP) to port 25565 on Windows Firewall. Forwarding ports on router configuration (TCP and ...
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1answer
59 views

How to block all traffic but one IP in windows firewall using command line

I have a project and for it I need to only allow connections in from a certain subnet, everything else must be dropped. The catch is that its all going to be automated, no user interaction, there for ...
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32 views

CentOS as home network router: IPTables Port Forwarding failure

I have currently set up a home server with a CentOS 6.6 installation on it. The server has two NIC interfaces which I'm using it as my router and DHCP server. Here's a diagram showing the network ...
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32 views

IP adress for debian.org and debian.net

we are enforcing a strict firewall policy at my firm and are whitelisting adresses on the internet. My issue is this : I need to get a list of IPs (or at least a subnet) for standard debian update ...
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19 views

NAT Rule for PPTP Port Forwading

I'm under a very heavy firewall where only very common ports such as 21 and 80 are open. I installed PPTP on my own dedicated server (a Debian Linux) and I`m trying to connect it using Windows, but ...
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56 views

Cisco ASA 5505 doesn't allow internet connection

This is my Cisco ASA 5505 "show run": : Saved : ASA Version 8.2(5) ! hostname LAB-ASA domain-name TEST.com enable password X encrypted passwd X encrypted names name 192.168.1.0 AsusWireless ! ...
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27 views

Windows 7 firewall rules doesn't work for FTP server

I have installed FTP server and set up an FTP site on Windows 7. I'm trying to connect to it via a Linux machine but the connection times out if the Home or work (private) networks firewall is on. ...
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26 views

how to specifically disable one software from connecting to internet?

so there is this presentation software called prezi. Its business model is this: If you have a free account, the presentation you created will be automatically upload to the cloud and be public, but ...
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18 views

Sonciwall SNMP configuration

I'm playing with some old Sonciwall and i like to configure with SNMP. All doc. and google iv done are the same procedure. System > Administration > SNMP Enabled ( community string etc. ). 2-step: ...
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1answer
113 views

How do I set a static IP address for a particular MAC address on a Cisco DPC3825 router

How do I set a static IP address for this router: http://www.cisco.com/web/consumer/support/modem_DPC3825.html so that a specific MAC address always gets the same IP address.
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42 views

Set up port forwarding on Ubuntu with ufw

I want to route HTTP traffic from port 80 to port 8080. I added the following rule to /etc/ufw/before.rules -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 8080 But it works only if direct ...
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44 views

iptables - How to mirror all ports from one IP to a single port on another IP

I would like to set up IP tables on my router to mirror traffic on all ports from 192.168.1.30 and send it to 192.168.1.10:5860 I think I need to combine the two commands below, but I'm at a loss. ...
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21 views

set Cisco SPI firewall to high, but allow SIP traffic?

How can I set the SPI firewall settings to "high" for the router, and yet allow SIP traffic? If I set the firewall to medium, the call will connect but I don't hear anything.
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1answer
10 views

logs are showing a succesful handshake but not connecting

I am using putty on windows to connect to an external ubuntu box: putty.exe mylogin@somewhere.com -pw mypassword The logs from pfsense are showing that it allowed this traffic to pass; however, I ...
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0answers
43 views

Why CSF blocking all traffic?

I've installed CSF firewall with Directadmin. when the firewall is running, it blocks all the incoming and outgoing connections. My iptables -L -n: Chain INPUT (policy DROP) target prot opt ...
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0answers
43 views

What are some ways to disrupt BitTorrent activity in OpenWRT? [closed]

My Internet subscription belongs to me in name, so I need to make a best effort to prevent housemates from getting me flagged for illegal BitTorrent activity. I read that deep-packet inspection is a ...
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1answer
74 views

firewall-cmd in CentOS 7

I have a virtual linux server from STRATO. This machine runs CentOS 7 and when it comes to firewall settings I can read everywhere to use firewall-cmd. My system has no command available named like ...
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1answer
103 views

Why Windows Firewall does not block outgoing traffic?

I have noticed that Windows Firewall only blocks incoming traffic, for example, if I tried to listen on port 12345, it will display a warning dialog asking me if I want to allow it. However, if I ...
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0answers
32 views

csf (config server firewall) with nginx

I am looking into various web server solutions, and have come down to nginx and apache; I'm fairly ok with the technical differences and the pros/cons of each and if it was just down to that I would ...
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2answers
68 views

Windows 8: want to force a specific website be opened only by one of two internet lines avialable

I have a PC with win 8 with two different available wifi internet lines available. I want to to force a specific website be opened only by only one of internet connection and other websites be opened ...
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46 views

Can Windows Firewall be hole punched?

If you send a packet to someone's router, it will most likely be rejected by either the router firewall or the router's NAT (if no port is forwarded). However, for a short time, your router will ...
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1answer
246 views

I suddenly can’t access my own web server within my LAN via the external WAN IP address

Suddenly today—without explanation—I cannot access my web server from my local network. My router is an Actiontec MI424WR MI424WR (GigE for Verizon FiOS). I have verified that no browser running on ...
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18 views

SonicWall firewall setting up RDP

I want to setup an RDP connection from the outside into my network I have a SonicWall NSA 220 what is the process involved? How secure is this option? are their other options available to this device ...
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0answers
19 views

How to log HTTPS traffic

I want to log https traffic of my network without loosing certificates trusts and without a proxy. I need to log "only" source ip, remote hostname and data traffic amount. Should be easy to get ...