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

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1answer
128 views

UFW default rules… where are they?

In the tutorial on UFW here https://help.ubuntu.com/community/UFW it says that UFW uses the default rules if enabled and not configured. I checked the folder: /etc/ufw/ and the files I found ...
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2answers
644 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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1answer
253 views

Windows port opening

I had a problem with opening port between my host (windows 7) and a virtual box (windows xp) system. On my host win7 system, I added a port from the inbound rule (port 777) under the firewall advance ...
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2answers
47 views

Is Microsoft's Photosynth app blocked in China?

I've been making photosynths for a few years on my travels but in China I can't seem to log in via the Photosynth app. I get this error: (In fact I hadn't realized until now that it's tied in to ...
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1answer
3k views

Windows firewall blocks outbound connection that is allowed by a rule

I have configured Windows Firewall to block all outbound connections. I have then created "allow" rules to enable certains applications to create outbound connections. Unfortunately it seems that some ...
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1answer
69 views

How are they blocking RDP on port 80?

I'm on a corporate computer that is behind a very restrictive firewall, and trying to connect to my home computer. I configured my router to forward port 80 to 3389 (RDP port). My idea was to try to ...
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1answer
740 views

Samba server cannot be access across the internet

I have a computer at my house running Ubuntu Server 12.04 that is mapped to an external ip address. The server is running a Samba server with one share. Here is the configuration file: ... ...
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1answer
122 views

Configure Packet Filter with white-list and black-list

I’m trying to configure Packet Filter on a FreeBSD server with a black-list of addresses/networks to block and a white-list of trusted users which cannot be blocked (black-listed). Here is my first ...
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1answer
40 views

Setting up port 3360 access on McAfee firewall using windows 7 for network access

I have a windows 7 machine serving me PHP / mySQL etc i have set is all up well and is all working on local machine as well as on local network machines. My issue is that when i try to connect ...
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2answers
400 views

Wifi router blocks wireless peers from connecting each other

What option controls that wifi router blocks wifi peers from connecting each other. I have wifi router Dlink Dir-320. With that router I can't ping (or connect via FTP or HTTP) one laptop from ...
2
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0answers
438 views

Opening port on mac os x (mavericks) for nodejs

I am running a node.js app locally and would like to make it available for demo for outside world. It is running on port 3000. I have added node to the firewall to allow incoming connections but ...
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1answer
135 views

Controlling ICS access with Windows Firewall (windows7)

I'm looking for links to documentation or clues on how to add rules to windows firewall to deny all access to internet from computers connected via ICS and then allow only a minimal set of TCP ports. ...
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0answers
153 views

Secure reverse UltraVNC connection to bypass firewall

My clients and service run on mostly Windows 7. I need help setting up a secure reverse connection with UltraVNC between me and a client.(Me=Viewer, Client=Server) Here is my situation: I want to ...
1
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1answer
111 views

iptables detects clients behind NAT?

I'm setting up a server that I want to protect from DoS attacks, by setting a limit using iptables: iptables -A INPUT -p tcp --dport 80 -m limit --limit 25/minute --limit-burst 100 -j ACCEPT (default ...
2
votes
2answers
795 views

Filezilla connection - port blocked?

Since this morning I am unable to make a update with many files (i try to update the piwikinstallation, requires me to upload about 24mb). After a while, filezilla gets the answer from server, that ...
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1answer
41 views

How to check company firewall

I am trying to ping to an external APIs IP address. But the command times out sooner than its completion. Now I think the company firewall and proxy might be a hindrance in this. How do I check the ...
2
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1answer
77 views

How to use google search via SSH tunnel?

I live behind the Great Firewall of China (not very proud of it) and I'm slightly technical. So I use SSH tunnel to route all connection to my VPS. (i.e. ssh -D port and then set localhost:port as a ...
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0answers
77 views

Setting home computer as www web server

I know I'm seriously missing some steps. I need to set my home Fedora 19 running computer as a web server and available it to internet. Its behind a normal home broadband modem connection. my ip ...
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1answer
75 views

how to restore iptables after iptables -F?

I used iptables -F on my machine, and what can I do to recover the iptables into the default without rebooting my machine? I restarted the iptables service and it failed, and I can't find iptables ...
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1answer
135 views

Iptables limit user access time and mac

I am trying to create an iptable chain to kick my daughter off her ipad during the night. With the mac only filter I can block access but when I add time it no longer works. Does anyone see an issue ...
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0answers
30 views

Download stops in all browsers and download managers on Windows XP

I have Windows XP on my desktop and I can't download anything on it. Download stops after a few seconds or even doesn't start. I've tried using Firefox, Chrome, IE, different download managers, but ...
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0answers
40 views

Windows update not working with devices that have outbound firewall rules

We currently have devices that have all outbound traffic blocked with the exception of certain applications such as Google Chrome, Internet Explorer, etc. This however limits access to Windows Update ...
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0answers
384 views

Is Comodo Firewall and Zonealarm Firewall compatible with avast free 2014?

on windows 8.1 currently using avast free antivirus 2014 ,is it possible to use free firewall like comodo or zonealarm with it simultaneously with avast?After installing any will problem occur?
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2answers
128 views

Action Center cannot switch on Windows Firewall

I can't seem to switch on my Windows Firewall no matter what! List of things that I have tried and hasn't worked for me-> Disabled Avast Antivirus(free) and tried switching on Went to services.msc> ...
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1answer
600 views

netsh, block all IP addresses in a text file?

Is there a way for me to import a .txt file (with IP addresses on each line) into Windows Firewall? I want each of the IP addresses to be completely blocked. That would also provide an easy way to ...
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1answer
177 views

With ufw, how do I limit SSH from outside, and not from inside?

Using UFW, limiting connection attempts for things like SSH is real easy: # ufw limit SSH However, I'd like to limit only the public-facing interface, not the LAN interface. This command does it ...
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1answer
202 views

Prohibit internet access for all applications except selected ones (OS X)

Is there a tool that can be used to prohibit internet access for all applications except selected ones (on Mac OS X)? "Little snitch" can't be the answer, as it doesn't provide a simple "deny all / ...
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0answers
74 views

Any way to see ddwrt logs with website/PC names etc?

We used to have a dlink dir655 router that had logs in the interface. The logs were simple,easy to read, and had the name of the computers, iphones, etc on it. This made it easy to pinpoint who was ...
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2answers
243 views

Packet filter logging [currently with tcpdump in background as root]

I am running OS X Mavericks and use the "packet filter" firewall. However, it seems that "pflogd" is not available. I found that you can create an interface named pflog0 and then use tcpdump to see ...
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0answers
131 views

Cannot fetch urls from outside the browser

I am trying to clone a small repo on my Windows 7 PC using 'msysgit' bash command like as follows: talha.ahmed@ICE-088 /d/talha.ahmed/workspace/repos $ git clone https://github.com/torvalds/linux ...
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4answers
2k views

If I use an SSH tunnel to get around a firewall, what does the sysadmin see?

I use an SSH tunnel for the port my browser uses to access the internet. The result is I get around the firewall my network uses, which prevents me from using many sites I want to use (facebook, ...
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0answers
50 views

Windows - MAC address whitelist on wired network?

In Windows (XP or 7), is it possible to configure either Windows, a software firewall, or network cards such that the computer will only communicate with specific known MAC addresses (e.g. the MAC ...
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0answers
51 views

Give external parties access to web servers behind the firewall

I work in an AM-project as a consultant against three customers. We have a file server and a TFS server where all project related are saved. The problem is that it is behind the corporate firewall ...
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2answers
15k views

need iptables rule to accept all incoming traffic

For my test environment i want to accept all incoming traffic, can someone please give me the iptable rule to be added. My current iptables -L -n output looks like this Chain INPUT (policy ...
0
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1answer
203 views

Firewall and Blocking [More] Traffic

I have a MacBook Pro with the firewall on. I'm trying to run a Wireshark trace and the noise bleeding through Apple's firewall is very distracting. According to the image below, most of this noise is ...
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3answers
5k 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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7answers
10k 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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0answers
191 views

Dropping Packets with Openvswitch Openflowcontrol

I am trying to setup some Flows with ovs-ofctl to block all unwanted incoming packets for a VM. The commands I use are: ovs-ofctl add-flow xenbr0 "priority=65000, table=0, tcp, dl_src=*, nw_src=*, ...
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1answer
50 views

How can one verify the port configuration of a firewall?

I am a contractor on a project and have provided a port configuration requirement to the Server Hosting service provider for my project. How can I verify that the ports are configured and "open" for ...
0
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1answer
26 views

List rules using iptables in a customized way

How to list the iptables rules in a customized way? Like: target protocol portnumber src dest the order could be changed but I dont want the name of protocols, just number (like 80 instead of http) ...
0
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1answer
72 views

Remote Desktop IP conflict

We have several outside users who connect to our server using the external IP. Everything has been configured correctly and it has worked for several years. Two days ago we had a test firewall (new ...
0
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1answer
167 views

Network Error: No connection could be made because the target machine actively refused it

I'm trying to bootstrap a server via Chef (using winrm), but continue to get the message: Network Error: No connection could be made because the target machine actively refused it I've opened the ...
3
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7answers
5k views

Is there a way to determine which service (in svchost.exe) does an outgoing connection?

I'm redoing my firewall configuration with more restrictive policies and I would like to determine the provenance (and/or destination) of some outgoing connections. I have an issue because they come ...
0
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1answer
740 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 ...
0
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1answer
200 views

Iptables filtering and NAT with secondary IP address

I have two IP addresses on my physical eth interface. Lets say 192.168.10.7 (eth0:0) and 192.168.0.7 (eth0). So it works. But I use application, working on the only one of this addresses on port ...
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0answers
22 views

Allow Windows Update with Firewall set to block all outbound [duplicate]

I'm using Windows 8.1 and I have blocked outgoing connections with the builtin Windows Advanced Firewall. Windows Update isn't whitelisted by the default outgoing rules list. How do I allow Windows ...
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2answers
286 views

Windows Firewall issues

I'm not sure whether this is a Windows problem or a .NET problem (i.e. whether it belongs here on on SO), but I've written a small HTTP server program in C# (using the .NET HttpListner class) which ...
2
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1answer
1k views

Import Export specific Windows Firewall Rule

How do I Export and Import specific Window Firewall rule (both Inbound and Outbound) ? I can do Import / Export policy but it will use ALL rules not specific rule. Same with Export List, it can ...
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0answers
122 views

SMB over SSH port forward

I know that since SMB is not secure, opening port 445 on firewall makes your computer vulnerable. To secure my connection, I want to run a SMB mobile app via SSH. Would I still need to open port 445 ...
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1answer
364 views

UFW: block all traffic for port 3306

How can I block all traffic for just one port? Take the following situation: Ubuntu Desktop VM Browser has access to internet (port 80 stays open) Ubuntu update services work normally (may not be ...