Software that controls what connections can be made to and from a network.

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Port forwarding in pfSense not working

I recently set up a pfSense router and can't get any port forwarding to work from outside my own LAN. I have the following forwarding rule to a local server located at 10.0.1.2: Note that if I ...
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17 views

I can't open a single port

I can't open ports on my computer. What I have tried: DMZ my computer on router, set static IP, used nMap to see if ports were closed, asked ISP if they block ports, turned off and let programs ...
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20 views

Cisco ASA 5505 port forwarding - rules breaking internet

I'm working with a client, they have an old outdated ASA. They have an app that requires ports 3000-4000 be open, and ICMP allowed. The computer hosting the app is at 192.168.1.167 Everything I try ...
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0answers
5 views

Why does my firewall block outgoing TCP/UDP port 137 ~ 139 + 53 ~ undefined

I've got a Draytek Vigor 2930 router which has a default xNetBios -> DNS which blocks "TCP/UDP, Port: from 137~139 to 53~undefined". What is this rule, and what is its purpose?
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25 views

Firewall service doesn't start after reboot

Every Sunday morning, our VDI's with W7 32 bit and VMware view 5.1 get a scheduled reboot. About 5% of them are not reachable after the reboot. It turns out the Firewall service hasn't started. When ...
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12 views

Simple interactive windows firewall [migrated]

I'm surprised I cannot find any windows application fulfilling following requirements: to behave as standard, simple, standalone and interactive windows firewall, nothing more not to be unmanageable ...
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1answer
28 views

How can I allow traffic to certain web address but restrict all other in linux

I want my linux (ubuntu 14.04 , 64 bit) system device which has a 3g card in it to have restricted access of internet . I want to build a scenario where if the card is active, the system should be ...
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2answers
55 views

How can a WiFi router recognize MAC address change of a connected device?

My teen son and I are playing a hacking game. I've installed an WiFi router with parental controls, MAC filtering, VPN, etc. I block Internet for him, he tries to break out of the cage (for now I'm ...
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14 views

Iptable entry gets vanished in an hour in oracle linux 6

I carried out the following steps to create a port-forwarding rule: sudo iptables -A PREROUTING -t nat -i eth0 -p tcp --dport 443 -j DNAT --to $ipaddress:10443 sudo iptables -A FORWARD -p tcp -d ...
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0answers
12 views

Accessing a shared folder via IP address

I have a VM (in Azure) with a static IP address. I also have a shared folder there - \MACHINENAME\Folder I want to access this folder from another machine over the internet - \ip.address\Folder I'd ...
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22 views

How to know that I passed the firewall from the TCP connections?

In my company, in order to access some intranet-sites, I have first to login to webpage (which I suppose is a firewall or something) with my account. If I login from FF for example, I can access the ...
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2answers
50 views

How can i block users from streaming facebook videos

I have a Draytek vigor 2925VNPlus and I have been able to block users on my WiFi from going to YouTube. However I don't want to block Facebook as a whole I just want to be able to block the videos so ...
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12 views

How to configure Windows 7 firewall outbound rules for symlinked applications?

I'm using Windows 7 Ultimate. I have set the built in firewall in outbound white list mode (block unless allowed by a rule). Now I'm trying to configure some outbound rules for the built in ...
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24 views

pfSENSE: Can't ping dmz gateway from inside dmz

I currently have a virtual pfSense machine with 3 interfaces (WAN: 172.16.xx, LAN 10.1.0.x, OPT1(DMZ) 10.1.1.x) I currently have no explicit rules, besides allow any to any on all interfaces. Internet ...
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20 views

Virtualbox: Unable to SSH to guest from non-local network

I have virtual Ubuntu server hosted by Virtualbox. The virtual machine is using bridged interface. (The VM must have spesific IP so I use bridged interface.) The virtual machine is on network ...
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20 views

Am I bridging this correctly?

So first of all I'm going to give the configuration I currently have, which is somewhat working The only difference between this image and my actual setup is that I have a router instead of a switch, ...
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0answers
13 views

Access another network computer, after remoting into this one from outside?

I have a Jenkins instance running on machine-A. On machine-B, I can go type the IP:port of machine-A into my browser, and access it just fine. Machines A & B share a local network, behind a ...
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1answer
27 views

how to block access to all ports except certain ones in Windows? Settings locked down by admins [closed]

I want to block all ports on my computer except ones used by applications that I use, blacklisting anything else. Firewall settings are locked down and I need access to a portable application. Minimal ...
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1answer
40 views

Debian : Outgoing port-scans detected, what to do?

We recently received a notice from our Server-providers that they detected an outgoing port-scan from our Server. They checked for malware or compromised account, but didn't find any. All they have ...
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1answer
34 views

None of my servers are working on Fedora Server 23

I currently am trying to use a Dell PowerEdge server with Fedora 23 Server as a minecraft server and a web server. For a while, my friend was using it to host his minecraft server on port 25565, and ...
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27 views

Best way of testing client/server applications as if two different sites

I've been doing a few projects recently testing client/server setups on my LAN. I have a regular ADSL connection at home with my own internal LAN. For example I've setup OpenVPN and tested via my ...
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12 views

How to allow guest on network in squid (ipfire addon)

After installing IP-Fire And being able to join a domain I have the following questions. How can I handle guests? They should have the limitations as normal users, but I don't want to add the proxy ...
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0answers
25 views

Firewall can not be turned back on

It says to use the recommended settings for the firewall but it loads and then does nothing. I went to "Services" and double clicked "Windows Firewall" it says it is stopped so I tried to click start ...
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0answers
10 views

Port Forwarding with out access to firewall

As the title says (and additional information) I am in a rural local with a ISP that not a direct line to the internet (I think they are piggy backing off another XD) or to the router in-between, so ...
3
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1answer
49 views

UDP “connections” rejection

I'm managing (edit: is hosted by VPS hoster) small machine for couple of game servers and website server (apache) together with some friends. Problem is firewall sometimes drops UDP packets. The ...
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0answers
8 views

NTP not getting through even to DMZ

My home router seems to be blocking UDP 123. sudo ntpdate -u time.apple.com works as expected, but sudo ntpdate time.apple.com I get: "no server suitable for synchronization found" I can get a ...
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0answers
13 views

Not able to access IP CAM on different wireless AP

I've set up a small home network with 1 wired router (TP-LINK TL-R860) and 2 wireless routers (TL-WR841N). Everything seems to be working correctly except for one issue... I have a wireless IP cam ...
19
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1answer
1k views

Is it possible to create firewall that only allows legitimate webserver traffic on port 443 and not any other service?

I always used the simple trick to bypass most firewalls which prevented me from using any ports. I simply opened ssh on one of my servers on port 443 and tunneled all traffic through there. However I ...
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16 views

monitoring DD-WRT router logs with WallWatcher

I was setting up log monitoring for my DD-WRT router with Wall Watcher. What I have problems with is the actual logging. I've found that the router's syslog port is 514, however when I allow this in ...
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0answers
17 views

Watchguard firewall with DHCP

I have a watchguard with the ip address of 192.168.1.254/24 (DHCP disabled) and all the user will get IP from Window 2008 DHCP Server [192.168.1.2 to 192.168.1.250] /24. Now I need to increase network ...
0
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1answer
26 views

How to block certain IP addresses on UEFI system?

So I have several OS on my PC and I'm frequently changing this. Is there some way I can block certain IP address on my NIC so that I can't access it no-matter what. I'm thinking maybe if there could ...
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46 views

Port Forwarding on CentOS 7 using FirewallD

I have a network where I have a Netgear cable modem bridged to a VyOS Router, then a DMZ network to my external firewall / internal gateway then into my local network. (I have the Netgear modem ...
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1answer
28 views

Comodo Firewall asks to restart the computer. How to refuse?

Comodo Firewall asks me to restart the computer. In the dialog box it seems that I can only postpone the reminder. Is there any way to turn off the reminder for ever? I use Comodo Firewall with ...
3
votes
1answer
105 views

How to isolate networks with a Mikrotik router?

I have recently got a Mikrotik router for my network, and I want to create 3 networks that are isolated from each other but all have internet access: The "main" network for PCs, etc. A network for ...
2
votes
3answers
68 views

Cannot Access My Computer Over LAN

I cannot even ping my computer from another device inside LAN. I've tried the followings: Turned on Network Discovery, File&Printer Sharing, Folder Sharing from Network and Sharing Center ...
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1answer
33 views

How to Block all inbound and outbound traffic to and from an Local IP

I need to block entire traffic to and from an Local IP on an WiFi Network, I am using DD WRT Based router, So I Can use iptables. I know the IP Of an Client on the Local Network, Some thing like ...
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0answers
25 views

Dropping a connection upon a certain event

Is it possible to drop connections to a number of remote stations when another is open? For example say we have a set of machines with the network addresses (IPs) {A, B, C} and another with the ...
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0answers
52 views

pf error - “No ALTQ support in the kernel”… What does this mean?

I am running Mac OS X. I would like to be able to configure pf because it seems to be more sophisticated and flexible than the default Mac OS X firewall that you can access through the System ...
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0answers
83 views

Blocking Samsung TV firmware updates using Zyxel's 'Eircom f1000' VMG8324-B10A

Please note to fix Wi-Fi in the past, using a guide created by users of this forum, I have previously unbranded this router to remove the Eircom firmware and it now runs V100AAKL12C0 which was ...
0
votes
1answer
67 views

Which layer7 protocol used the YouTube streaming

I want to restrict the bandwidth on YouTube in pfsense firewall. I try to setup layer7 with set the limit on http video/audio,flash, swf protocol and created the separate rule for YouTube but did not ...
0
votes
1answer
26 views

Windows 7 firewall different subnets

I'm on a large company network with different subnets. There are a few win7 computers that I have admin rights on, but I'm not able to access their drives through different subnets. I can access the ...
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0answers
7 views

Manipulate a network with virtual machines

How can I make this network with virtual machines? I know that I need next things: ESXi DMZ Debian Firewalls Apache server But how can I do this? Can I download an iso file whit ESXi like you ...
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1answer
43 views

2 Internet Connections, 1 Computer. I feel this is harder than it should be

I have looked around for a while but haven't been able to find any answers, maybe because what I want to do isn't really possible, but that's why I am here. Basically, I have 2 separate incoming ...
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0answers
11 views

Block HTTP/HTTPS traffic unless proxied through CloudFlare using UFW

I have a web server and I wish to enforce that all HTTP/HTTPS connections go through CloudFlare, and can not simply just go directly to the IP address of the origin. How can I configure UFW to do ...
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0answers
38 views

Firewall warning in Windows 10 - choose public or private network

While installing Spotify on my Windows 10 machine I got the very same security alarm from the Windows firewall as in this question. While the firewall warning was explained in this thread I still ...
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13 views

setting up firewall to block internet access from virtual machines

i am trying to setup a firewall in my LAN. this is my current setup: broadband connection, router, esx server, VMs inside esx, desktop, laptop. currently all the systems(including Vms) can access ...
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81 views

Virtual server on Arris Modem: “Table FWVirtSrvTable Full”

I have forwarded ports in the past. Never had any issues. I'm using an Arris TG1672G modem. Whenever I try to add a virtual server (aka forward a port), I get this "Table FWVirtSrvTable Full" error. ...
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0answers
20 views

Group policy: Why does the firewall GUI disagree with the HNetCfg COM Object?

I have some code that verifies the firewall status on the current machine by querying FirewallEnabled on an HNetCfg COM object. When running in domain B where the firewall state is controlled by ...
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121 views

Open port with pfctl in OS X El Capitan - Allow incoming connections from Internet

I was struggling with a kind of configuration that I'm doing with my mac mini. I have set my machine on the DMZ of my network, so any request to my public ip will end on this machine. The problem is ...
2
votes
1answer
31 views

Command executes fine through cmd but not through PowerShell

This command doesn't work: netsh advfirewall set allprofiles firewallpolicy blockinboundalways,allowoutbound This command works: netsh advfirewall set allprofiles state on I've tried using ...