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

learn more… | top users | synonyms

3
votes
3answers
68 views
+100

Vyatta Firewall structure and Interface Direction

I've just purchased a Ubiquity EdgeRouter ER-8, and I'm working on configuring the firewall. In particular I'm confused about the direction "Local" for the interface I've defined as the WAN, and how I ...
2
votes
2answers
36 views

Passing through a firewall with a “reverse” proxy

I have to do a workshop in a firewalled environment which is preventing me to show everything I would like and I'm looking for a workaround. I'll be demoing a software which runs on Windows. During ...
1
vote
1answer
37 views

Decide to allow or block internet access to applications [on hold]

I'm looking for a simple tool that everytime an application of any kind tries to access internet asks something like "Application.exe is trying to access internet" and lets me choose wheter to allow ...
0
votes
1answer
22 views

what the “!” means in the iptable rule

what the "!" means in the following iptable rule iptables -I inacc ! -i br0 -p UDP --dport 69 -j ACCEPT I think is related to the interface br0. I think it mean any interface except the br0 Am I ...
0
votes
2answers
12k views

How to open a specific port in Moutain Lion Firewall

I cant seem to find how to open a specific port in the ML firewall? I know you can give applications permisiion, but thats no good to me. Is there a way I can specify a specific port?
0
votes
0answers
15 views

UDP over Internet

I have a small problem: I want to program a simple Apllication that sends a small word (in this case: "Hello") to a server. This Server should display it via cout. This is just a project to learn how ...
1
vote
0answers
17 views

Why do my nat iptables rules not work with marked packets?

System: debian squeeze, Linux server 2.6.32-5-amd64 #1 SMP Tue May 13 16:34:35 UTC 2014 x86_64 GNU/Linux, iptables v1.4.8 lsmod | grep iptable iptable_security 2176 0 iptable_mangle ...
0
votes
1answer
14 views

How to white list some ip and all the rest block while having already a DMZ?

I have a Linux machine running which has local ip: 192.168.1.2 connected to a router with public IP 8.8.8.8, now the router 8.8.8.8 has DMZ to 192.168.1.2 As a result spammers, hackers, crackers ...
1
vote
1answer
27 views

How can I make Ubuntu firewall rules ( ufw ) allow all traffic except…?

I'm new using Ubuntu and ufw command to set firewall rules. I have an apache service running and I'm able to deny the access to the root path using apache2.conf. I have another backend app running on ...
0
votes
0answers
36 views

Linux: Block all applications from accessing internet and whitelist some (Kubuntu 14.04)

How can you block all applications from accessing the internet in Kubuntu, and only whitelist some? (To prevent automatic updates, downloads (data plan), "calling home" and sending any log/usage ...
0
votes
1answer
8 views

Can't connect to SAMBA - ISP is blocking it

Security issues aside, I'd like to connect to a SAMBA share from home to a server (dedicated or vps, doesn't matter). The server works perfectly. The issue is on the client side. Let me more clear: ...
3
votes
1answer
2k views

Windows 2008 Firewall - How do I restrict HTTP inbound to specific IP?

My goal is to restrict all HTTP inbound requests to a specific IP addresses. I thought it would be a simple process - but I am not getting the result desired I have modified a predefined rule called ...
1
vote
1answer
16 views

Firewall Throughput vs. UTM Throughput

I want to buy a new rack-mountable router with wireless capabilities. I was checking out the (Netgear UTM-25S. This router has a "firewall throughput" of 980 Mbps but a "UTM throughput" of only 24 ...
4
votes
4answers
13k views

Windows 7 is blocking ports

I am trying to open port 80 and 3690 for HTTP and svnserve respectively (inbound for both). I have Windows Firewall off, and have tried temporarily disabling Mcafee VirusScan Enterprise, to no avail. ...
-3
votes
1answer
22 views

about CentOS 7 apps & Driver

im using pc for several years but never tried Linux so im quite noob in this field. im using Autodesk maya, Nuke & will learn houdini very soon. i found that linux works faster for this apps so ...
0
votes
2answers
36 views

Prevent traffic to mac address using ebtables

I have an interface on a remote host: 2: eth0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qdisc pfifo_fast qlen 1000 link/ether 00:05:68:02:68:dd brd ff:ff:ff:ff:ff:ff inet 192.168.3.1/24 ...
-1
votes
0answers
17 views

How to get a log each time a packet is blocked by Windows7 firewall?

I would like to monitor if when sending a document to a printer, the Windows firewall enters in action. How to get a log each time a packet is blocked by the Windows integrated firewall? Some people ...
0
votes
0answers
10 views

Nessus Home not logging in

I have deleted and reinstalled Nessus for the 7th time now and I still cannot log in. Ive checked everything from my firewall and SSl certificates. When I try to login it only shows a spinning wheel ...
1
vote
3answers
27 views

iptables catches on DENY but not on ACCEPT place prior to it in the chain

I have a weird problem with my iptables firewall: If I set two consecutive identical rules, the first is ACCEPT and the second is DENY, the incoming packet is denied (and logged as such). How is it ...
0
votes
0answers
14 views

Disable Fortitoken on a Fortigate Firewall

I made an error while configuring my admin account on the FortiGate 60d and enabled forti token for 2 step authentication. Thing is I enabled the wrong token and I do not have that device with me. Now ...
0
votes
0answers
14 views

Unable to connect server through winSCP and its giving access denied error

Even though by providing correct username and password it's not allowing to connect to server. I turned off firewalls also in server. But, still not able to access FTP connection. I also checked that, ...
0
votes
0answers
6 views

equivalent of iptables rule in ip6tables

I m newbie in the iptables. I have the following iptables rules in the source code of a project iptables -t mangle -I PREROUTING ! -i br0 -p TCP --dport 45 -j MARK --set-mark 0x1000 iptables -t nat ...
0
votes
1answer
13 views

MySQL: Port issues on an domain network setup

I am looking for options to have a MySQL server on corporate environment where opening a port in the Windows Firewall is quite difficult (a lot of red tape). At this point I am not looking to have a ...
0
votes
1answer
20 views

Connect a external SSH Server from blocked SSH Tunnel network

I need connect to SSH Server in my work office from a academic network, but in all tries occurred a "Timeout error". In my home and in other places the access work fine to connect (SSH Server working ...
0
votes
1answer
3k views

How to open a port for all users: NSA 2400

I'm trying to open up port 8332 for all users behind my firewall but can only find instructions for doing so for a single IP address. How do I make sure all my users can use a specific port? I've ...
1
vote
1answer
23 views

How to block docker-mapped ports with a firewall from outside the host without messing up docker routing inside the host?

I have a docker container running on a host with some port mapped to a port on the host. docker run -d -p 9009:9009 someserver I want this machine firewalled off from the internet except for 80, ...
15
votes
7answers
25k views

Changing network type from Unidentified network to Private network on an OpenVPN connection

Is it possible to change the connection type in Windows 7? I have a OpenVPN connection which is identified as "unidentified network" and I do not want to apply certain rules to all unidentified ...
1
vote
3answers
10k views

Firewall and Internet speed?

I have a doubt about my slow internet speed with third party firewall that I am using currently. Is it true that firewall can limit the internet speed ?
0
votes
1answer
56 views

How do I stop my Mac from asking to accept incoming network connections?

I am using Syncthing, which is an application to sync files between two or more computers. I believe Syncthing (on github) needs to be allowed to Accept incoming network connections to work properly. ...
3
votes
1answer
2k views

Allow access from outside network with dmz and iptables

I'm having a problem with my home network. So my setup is like this: In my Router (using Ubuntu desktop v11.04), I installed squid proxy as my transparent proxy. So I would like to use dyndns ...
0
votes
1answer
84 views

How to replicate couchdb instances behind home router firewalls?

What are the options (if any) to allow replication between couchdb instances without portforwaring the couchdb port on a home router? Assuming both couchdb instances are behind home router firewalls.
0
votes
0answers
48 views

Disabled firewall on a Asus router and now can't connect

I have an ASUS RT-N12 wireless router with WAN web access. A dummy of the router web interface can be found here. I had "Enable Web Access from WAN" on and was able to access the web interface via a ...
21
votes
3answers
81k views

What are Inbound and Outbound Rules for Windows Firewall?

Can anybody explain what are the inbound and outbound rules regarding Windows Firewall? What is their significance? Are they useful even when Windows Firewall is off?
2
votes
1answer
3k views

Why does NTP require bi-directional firewall access to UDP port 123?

From What are the iptables rules to permit ntp?: iptables -A INPUT -p udp --dport 123 -j ACCEPT iptables -A OUTPUT -p udp --sport 123 -j ACCEPT Also, from the NTP website: ... ntpd requires ...
2
votes
1answer
4k views

Block websites to a certain IP range with mikrotik router

I have a MikroTik Router 951Ui-2HnD that connects my computers with the ISP. I want to block Youtube and Facebook but only in a few computers. I created a Layer7 Protocol with: Name : Denied Websites ...
0
votes
2answers
302 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. ...
11
votes
4answers
22k views

Which ports to open for Microsoft SQL Server?

Having searched the internet a few times on the best way to open up SQL Server connectivity through windows firewall i've yet to find a best way of doing it. Does anyone have a guaranteed way of ...
2
votes
2answers
2k views

Fedora 20 FirewallD GUI not working on X11 forwarding

I am having a problem with SSH X11 forwarding on Fedora 20 with firewall-config, the GUI tool for FirewallD (the dynamic firewall system). With most X11 GUI applications including pretty much all ...
0
votes
1answer
3k views

Firewall open ports for vSphere

I need to open ports on a firewall, so that a client could access his VM console through vCenter server's Web Client. I had a look at this page about port description, but I am a little confused. I ...
1
vote
1answer
3k views

UDP blocked by Windows XP Firewall when sending to local machine

I work for a software development company but the issue doesn't seem to be programming-related. Here is my setup: Windows XP Professional with Service Pack 3, all updated Program that sends UDP ...
2
votes
1answer
7k views

How to setup firewall to allow internet connection sharing via Wifi USB stick?

I have a Windows8 computer linked to the internet via an ethernet cable ("Ethernet" network connection). I have attached to it a DLink Wifi USB stick, and I'm trying to share the main PC's internet ...
0
votes
0answers
33 views

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 ...
0
votes
1answer
31 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 ...
0
votes
0answers
94 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: ...
0
votes
1answer
100 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?
0
votes
0answers
26 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 ...
0
votes
2answers
46 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 ...
2
votes
0answers
32 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, ...
3
votes
0answers
41 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 ...
0
votes
0answers
26 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 ...