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

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How Firewall monitors SSL HTTPS Content? Like Content Filtering

as per my knowledge, in SSL/TLS , only the source and destination machine can decrypt the message during a data communication . Then how a firewall like (Cyberoam) monitors the SSL Traffic, Like ...
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58 views

How to allow IIS to pass through firewall?

I've recently setup IIS in the server And set up below firewall rules: World Wide Web Services (HTTP Traffic-In) [Enabled] 80 port allowed to the public However, I still cannot access the web ...
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19 views

File share access

I have a File Server on Windows with user access via AD. Now I need to deny access for a user group from a specific IP-Pool. But other users must connect to the file share from the same pool. How can ...
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106 views

Windows Firewall - Allow program in dynamic folder

I need to add an exception to the Windows Firewall rules that allows a program (LogMeIn Rescue). LogMeIn let's the user download some Remote support tool.exe that unpacks into %localappdata%\logmein ...
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1answer
21 views

Where do I start to troubleshoot this strange activity from my firewall?

I noticed that my firewall yesterday blocked outgoing attempts starting at port 61494 and worked its way up to 62381, making a TCP outgoing attempt at each port once. The remote IP address seems ...
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24 views

TCP and UDP do not work with firewall

I can not connect my TCP-Client to my TCP-Server. Here is my Code: http://stackoverflow.com/questions/35661591/tcp-server-does-not-work-with-firewall I have already opened my TCP-Port "8888" in the ...
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50 views

Server 2008 What ports can I close/filter?

I have a computer running Server 2008. It has been up and running for over 6-7 years, however recently due to a LeChiffre attack, I'm looking to really lock it down from the outside. The ONLY thing ...
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61 views

How to filter mac address

There is a main Cyberoam router. This router is used to supply network to four different areas. Each area has its own Cisco router. The Users connect through that Cisco router. Now I want to prevent ...
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30 views

how to set windows firewall rules for bridged network connection?

i have created some rules in my windows firewall to grant access to only to a particular IP.. rest all connections are denied. i created a bridge between the host network and another network[ two nic ...
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35 views

Fail2ban update router firewall

Is it possible to update the router firewall with fail2ban instead of the firewall of the server machine? (I don't want to install a firewall to defend the server machine from the local network. I ...
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1answer
76 views

How to manage my firewall with new Centos's utilities?

I just installed a Centos7 distribution on my server. I came from Centos6, and I read that iptables utility has been replaced by firewalld and services utility by systemctl. So I try to get my ...
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1answer
42 views

control internet traffic in a lab using centralized software firewall

I am trying install a software firewall in our lab. How I am planning to do this is by, installing a firewall application on a computer. There are two network adapters attached to this pc, one is ...
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572 views

Block YouTube using Cyberoam CR25iNG [closed]

Hope you are OK. I was trying to block YouTube access in my company using Cyberoam UTM. I have firware 10.6.3 MR-1 installed. I have configured the web filter to block youtube.com and m.youtube.com as ...
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1answer
83 views

Block all traffic except for Chrome [duplicate]

I will be working on my 3G connection for a few days (meaning I'll be in the middle of nowhere). I don't want Windows to update and don't want any of my apps and services to connect to internet. I ...
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1answer
35 views

mDNS in the context of a DNS

Yesterday we have been discussing mDNS in the context of a lecture at the University. We did not exactly come to a result and I can't stop to think about it. The project in the lecture was about ...
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41 views

Block Windows Service Access to Remote SQL Server with Firewall

So I've got a fun firewall question. We have a windows service that we have running on a Windows Server 2012 instance. It is connecting to a remote SQL Server that we do not own, among other things. ...
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10 views

Packet is getting dropped even though iptables rule allows forwarding

I configured the following on CentOS to enable IP forwarding but limit to specific IP range(destination): iptables -D FORWARD -i eth0 -j ACCEPT #delete default ACCEPT rule iptables -P FORWARD ...
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36 views

Port Forwarding not working anymore

I've tried every solution I've come across and none of them have fixed my issue. Port forwarding used to work flawlessly. I have a dynamic IP, but that doesn't matter because it used to still work ...
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1answer
37 views

nslookup DNS Request Timed Out

I can't check the DNS, cause I use firewall in my server. How to fix it?, I have a server. DNS Request Timed Out
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17 views

how to scan in ubuntu in inside of firewall to check which ports are blocked by ASA or Juniper

how to scan in ubuntu in inside of firewall to check which ports are blocked by hardware firewall such as ASA or Juniper or switch's access list ? if can not install any software but can upload a ...
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1answer
130 views

Connecting a port in linux from other machine

I'm going fast to asking this question so i'm apologize. I'm on Linux Fedora 23. I'm running an application Telegram-CLI with listening a port using this argument. -P 1337 That is fine and works ...
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1answer
398 views

Blocking Windows 10 Telemetry Causes Watermark?

So I have been using the firewall from Symantec Endpoint Protection to analyze and block telemetry collected my Microsoft. I have recognized a trend. The standard feedback client tries to connect to:...
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66 views

Features blocked when Skype for Business web app plug-in not allowed through firewall

If a user attempts to join an Office 365 Skype for Business web conference and they don't have the native client installed (inc. the older Lync client), they have the option to install the Skype for ...
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2answers
33 views

Scan outgoing traffic for sensitive data

I run Windows on my desktop, but I would be willing to route my traffic through a Linux box if required. I've had two instances of my credit card being misused in two months now. Despite being ...
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58 views

Windows Firewall will not start up

The only backstory I have is that, prior to me noticing that firewall had stopped working, I moved a ton of things (namely Program Files & x86 and ProgramData) from my C drive to my D drive. I ...
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69 views

Refit old CISCO 5505 ASA hardware with Linux/FreeBSD software - (for the experience)

I was given an old Cisco 5505 ASA (EOL). The device hardware meets the specs for what could work in a small network, and I would like to replace the Cisco IOS with a unix open source option, like ...
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1answer
105 views

Configure Windows Firewall to block ALL applications system-wide, except for a select few?

I'd like to make it so Windows disregards internet access for every system and user application, and let me add exceptions as I see fit, but I'm having problems... Going to "Windows Firewall with ...
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9 views

Can I block some web pages only on specific user accounts on my Windows computer or do I need to purchase a firewall to do that?

I have an administrator account and I have 2 other accounts for my dad and my brother. How can I block those 2 accounts from accessing certain websites but keep allowing my account unrestricted ...
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120 views

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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67 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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115 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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63 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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30 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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183 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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23 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
674 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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44 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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97 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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44 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 10.0.0....
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34 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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22 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
41 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
124 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
86 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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32 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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45 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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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 ...
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1answer
103 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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23 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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21 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 ...