Questions tagged [firewall]

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

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Which IPv6 basic firewall rules (cisco asa) are necessary on your internet breakout router when using global v6 addresses in your network?

I am making a small virtual lab setup to do some testing with IPv6 global addresses only. I have a simpel setup: 1 Router/firewall (asa) to break out to the internet DMZ with 1 webserver with dns (...
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Internet issue on home network

I have a home network and the internet seems to be dropping every few weeks. I have a Fortigate 30E firewall and 2 access point one Meraki and one Ubiquiti. The firewall is connected WAN port by my ...
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How to specify multiport iptables with mac address source?

As per the subject - I want to have a rule which match the MAC address of the source I want to allow and allow 80 and 443 only. I have the following rule which works correctly: multiport when I ...
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How to block network leaks during boot time on windows?

How to disable the network interface (or delay its activation) during windows boot? this is meant to avoid network leaks that can happen before a firewall application start to monitor the network at ...
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Mac Apache behind firewall very slow

I've set up Apache with a virtual host listening on port 8568 on Mac OS 10.15. When the firewall is disabled, everything works as expected, but when I'm enabling the firewall, the response time ...
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Securely routing all traffic in a home network through a secondary firewall/gateway

FYI, I'm not a networking expert by way a long shot :-). I Have a plain simple home networking setup: a VDSL modem/router with home devices directly connecting to it mostly through wireless. I'd like ...
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Where would I change the firewall setting in this setup?

Question: Is it possible to make a Windows Firewall application exception via command line or any other way? Why We have a host running Windows 2016 Server with several Hyper-V VM's also running ...
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Windows firewall outgoing rule exception not working

I set custom outbound firewall rule on Windows Server 2019 which deny all outgoing traffic to 192.168.2.0/24. The rule is working for all until I set an exception in "Local principal/Exceptions". When ...
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Why can I ping an ipv6 but not an ipv4 and vice versa? (Hamachi)

I'm using Hamachi LogMe-In to connect a laptop (A with Win8.1) to a work computer (B with Win10) for SSH, both running Windows Firewall allowing SSH port 22, and the PING.EXE. Somehow I got that to ...
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For better security, should I enable or disable these ALG firewall options - Router?

I have DIR615 300M Router. Hardware version E4. It has a handful of options to configure under Firewall settings. I am particularly interested in ALG settings. What exactly is this ALG and for ...
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Port forwarding not working although port is open

I'm attempting to run a web server from home. What I have done so far: 1) Configured static IP on router. 2) Configured port forwarding on router. 3) Configured windows firewall - inbound rule. ...
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non-NAT'd ip to firewall

My firewall appliance requires a non-NAT'd ip address and 4G is my only option. What is the difference between a 4G router that uses a sim card vs one where I connect a phone and select usb tethering ...
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Microsoft Defender Firewall is … unsafe : WSL access?

I would like to access my X server from WSL 2 so I disabled the interface alias with : Set-NetFirewallProfile -DisabledInterfaceAliases 'vEthernet (WSL)' but now, I have a message from my security ...
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Does svchost.exe in Windows always need a service attached?

I'm reviewing some firewall logs on a Windows 7 box. Most of the services on the box are set to use their own svchost.exe (as opposed to sharing svchost.exe). This had made the process much easier, ...
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Ubuntu block incoming and outgoing connection

How to create an internet kiosk using a firewall? I want to block incoming and outgoing connection except one website and update server in Ubuntu. I used many commands but every time when I block ...
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Configuring iptables to port forward ssh connection to a server

I have a network topology that looks like so: Internet--------------------Firewall-------------------------Server 0.0.0.0/0-----172.8.45.140 & 192.168.1.1-----192.168.1.2 I need to configure ...
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Anyone tried configuring Bell Total Connect Phone behind Firewall using Ubiquiti Gateway?

I have been trying to configure bell total connect phone to configure on firewall behind Ubiquiti UniFi Security Gateway but not having any luck. I put the Bell model in bridge mode and tried all ...
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kernel missing nf_tables_inet module in Solus

the title says it all. Solus Linux kernels are missing numerous kernel modules essential to successfully operating nftables! why is it even a pkg in the eopkg repos if they don't compile their kernels ...
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OSX - Tor Guard and Little Snitch

I have a question regarding two applications/services that I'm currently looking at. Tor Guard is a VPN service. Little Snitch is an OSX firewall. Little snitch provides a gui window that shows you ...
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Is it a good idea to use a virtual machine as an external facing code repository server

I've set up (installed git/configured certs (disabled password login)/synced repos) a debian box vm with a bridged adapter. Now it's running on Windows server 2016; inbound connections are blocked by ...
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34 views

server not accessible from outside the local network

I'm not able to access my server from outside the local network and I think the problem might be with the router settings or my ISP. In the local network I can access my server (nextcloud on raspbian ...
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LogiOptionsMgr.exe Logition Options software is blocked from sending data from my PC

TL;DR / Question: How to enable an app to use internet and send packets on Windows 10? Other than FireWall what else could block a process from accessing internet? Hello, I recently bought a ...
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Permanantly allowing an app through the Windows Defender Firewall

On startup, many of my apps, such as Chrome and Spotify, have the "Windows Defender Firewall has blocked some features of this app" prompt appears, despite the fact I have allowed access, with admin ...
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Ubuntu PCs are unable to configure with IP address from DHCP server

We are trying to setup VLAN network in our institute. We have Cyberoam firwall (Model CR300iNG) where we have configured VLAN and DHCP server. When we connect any Ubuntu PC over VLAN network it is ...
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Turris/Luci: Route server on br-lan to br-wan?

The routing table on Turris Omnia looks like this: # route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 1xx.1xx.246.161 0.0....
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Clients don't see each other on OpenVPN / IPFire

I'm setting up an IPFire Server with OpenVPN and I want my clients to see each other. For this I've set up the OpenVPN Configuration via the webinterface of IPFire and started the server. The OpenVPN-...
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how to block everything except two programs from using ethernet and allow every thing except those two programs from using WiFi

I have two different connection on my win 10 PC (Ethernet an WiFi), I use the Ethernet strictly for work LAN no internet allowed and WiFi for internet. I use for work, 2 programs and i cant allow any ...
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How can I block a program's access to the internet but not it's access to my local network?

I want to block a program's access to the internet while retaining the ability to access my local network. I do not want to block internet access for the whole pc. I would like to accomplish this with ...
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347 views

Blocking remote internet traffic but allow local computer traffic (localhost) using Windows Firewall

Is it possible for me to block traffic to and from sources and destinations outside my local computer using Windows Firewall for certain programs? As I understand, I may have to use subnets/subnet ...
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Whitelist domain in PfSense firewall

The specific website https://ausbildung.stiwl-moodle.de is getting a timeout in my network which is protected by pfSense. I have verified that the dns is correctly resolving the domain to 92.39.20.105....
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What ports to open on a firewall for printing to a HP LaserJet CP1525nw

I'm trying to open ports on a firewall for a sub-network to be able to print to a wireless printer (HP LaserJet CP1525nw) from the main network (which is behind a firewall also). What ports would I ...
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How to deal with relatively high cpu usage of firewalld?

on a remote host, I notice that the firewalld has a relatively high cpu usage ranging between 15%-30%, I think is is not normal coz there is not so much incoming/outgoing traffic, how to deal with it? ...
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Does the software-firewall of a virtual machines host also protect the guests?

Both: host & guest are running windows 10. I use VMware for virtualization. The guest VM connects to the internet via NAT. I have a service running on the guest VM which I can access from the ...
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125 views

Clarification about Firewall Forwarding

If a firewall forwards packets between different networks (internal) and no NAT is used, is there something in the packet where I can see if it was forwarded by a firewall?
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TCP RST when connecting via telnet to the application - Windows

I have an application running on Windows. The application listens on port 54000. I can connect to the application from the local machine and it works fine: telnet 127.0.0.1 54000 Now, I am trying to ...
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Different dns provider config on client and vpn provider causes Internet issue

I tried connecting to my office network via VPN. When I just click on connect after providing all the credentials, the Internet across all the devices that are connected to the router would drop. The ...
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Unknown IP attempted access to UDP port

I am checking up on my antivirus software (McAffee) and noticed in my security history it says: The PC 192.168.0.45 tried to access your system port UDP port 137. If you want to allow this traffic ...
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Cannot connect to VPN Server using the SoftEther VPN client

I set up a SoftEther VPN Server on a Windows machine. I can connect to it using the SoftEther VPN Client on multiple other machines. I recently installed the VPN Client on a new Windows machine and I'...
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Configuring W10 firewall ports to allow communication with Cinnamon 19.3 installed on VirtualBox

My PC: W10 Pro v1909 build 18363.778 i7-8700k processor on Asus ROG Strix Z-370e MB On VirtualBox v6.0.20 I have Linux 19.3 Cinnamon (Tricia) installed. I need to allow traffic from Cinnamon to W10 ...
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Prevent Chrome Remote Desktop from accepting new connection until current is finished

Consider I am using chrome remote desktop to connect to my mac through my ipad; I then use my phone to connect to the same host; the phone gets connected and the connection I had with the ipad drops ...
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Windows firewall rules to allow ips to load a site

I'm using a windows 7 machine with firewall that block all connections. Now i need to allow ip to load a domain, i tryed without success. I need to load this site growviews.com and app.growviews.com ...
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Ways to establish TCP connections between 2 computers that are located in remote networks behind firewalls

I'm trying to implement persistent TCP connection between 2 machines. They are located in different networks behind firewalls, so there is no way to establish direct connection I'm trying to figure ...
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31 views

Getting firewalld to allow traceroute for centos 7

We have a server running CentOS 7. There is a weird situation where I can ping to the server from my firewall but was not able to perform a traceroute. The server is a directly connecting to the ...
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Error with CSF on ubuntu / firewall

it turns out that on the PC of the "physical firewall" I have CSF installed to control all incoming traffic, and from there I route the ports to different applications located on other machines to the ...
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103 views

Jitsi Meet firewall configuration

I am currently setting up a Jitsi server and I am running into problems which I suspect stem from the firewall configuration. The server is an Ubuntu-based machine and I installed Jitsi from the ...
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38 views

Why can't I see a local service (PC) from internet?

I'm having an issue with port forwarding. I'm trying to setup a Snes9x server, so I start it and it says is listening on port 6096 (TCP). If I establish a local connection (with two instances of the ...
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ASUS Router ipv6 Firewall setup - allow all inbound on certain port

Situation: Trying IPv6 for first time. Stable setup at home on IPv4 and starting to tinker on the v6. Have ASUS AC-68U router connected to broadband box and firewall/routing all setup for a few ...
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44 views

Is it safe to only use the Public firewall on a Windows 7 computer with SQL server which has no connectivity to the Internet?

One of our Windows 7 computer with SQL server installed on it only uses the Public firewall because other computers on the network cannot access the SQL server if the private firewall is turned on. Is ...
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65 views

How to block Google Play store by router rule

Is there a way to block access to the google play store by a firewall rule? I'm trying to block access to the play store from our Wifi.
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Can a MOFI4500 block domains on a schedule within a day?

I use a MOFI4500-4GXeLTE-V2 as the primary internet in my home. It provides both wired and WIFI connectivity and I would like to block some distracting social media domains for the 1st half of my day,...

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