Questions tagged [firewall]
Software that controls what connections can be made to and from a network.
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Drop WLAN/local wifi connections to router management?
RouterOS v6.48.6 (long-term)
I've set a rule: Protocol (6) tcp; dst. port 8291; In. interface list WAN.
UPDATE START.
Due to comments, I understand that WAN was not correct. I am a beginner in terms ...
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Which Windows Firerwall rules are necessary for Internet connectivity?
I use OpenVPN, it installs a TAP network adapter, I set its location to public and set all other network adapter locations to private. in Windows Firewall, blocked incoming and outgoing connections ...
user1737559
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Can't ping any computer on LAN (including myself)
I can't ping anyone on local network, only my own router (default gateway).
When i try to ping myself (ping xxx.xxx.x.xxx) it throws "General Failure."
When i try to ping other computers it ...
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I suddenly got windows firewall pop-up to allow oobe.exe through it. What should I do?
Initial story:
I was using laptop(Just mostly general things like Internet browsing using chrome/edge, spotify, steam game in past 2-3 hours), went away for sometime like for 30 mins, and when I came ...
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How to block everything on Windows 10's firewall and slowly allow the things that I only need?
I've had just about enough with all the spying and resource usage behind my back on my Windows machine, so I've decided to consider the plausibility of first blocking all network traffic and then ...
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Why does Windows Firewall have outbound rules if they are allowed by default?
Outbound connections are allowed by default in Windows Firewall unless there is a specific block rule.
Windows has a lot of outbound allow rules that are enabled by default when you install it and no ...
user1737559
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Can't access raspberrypi server from domain
So long story short, my webserver suddenly stopped working last saturday from nowhere when I was developing an app that was dependent on my server. Since then, I am unable to reach to the server by ...
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Cannot access Synology NAS via SMB in different subnetwork
Summary:
I have set up a Synology NAS and would like to place it in the basement, next to the cable modem. My problem is that although I can reach its web UI, CIFS/SMB connections just time out. ...
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iptables ESTABLISHED,RELATED in combination with DNS rules
I'm reading Chapter 3 in "Cybersecurity for Small Networks" (Seth Enoka) and have added the following iptables rules in an Ubuntu 22.04.1 virtual machine:
# Generated by iptables-save v1.8.7 ...
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Need some help please, cant set Iptables
I am working with a embedded system that I am trying to set Iptables.
I get this error even though I am root:
/tmp # iptables -L
iptables v1.8.4 (legacy): can't initialize iptables table `filter': ...
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Why did the Google DNS stop responding to my ping requests?
I’m sending regular pings to a few DNS servers to be alerted when networking issues occur.
A few days ago, the Google DNS stopped responding to my pings on IPv6 (2001:4860:4860::8888, screenshot below)...
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Public vs private network setting for macOS?
On windows, we can set a LAN to be a public or a private network, to improve security.
Questions:
What does windows actually do (in terms of firewall settings) when I set a network to be private?
...
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Windows 7 Firewall stopped working after I changed permissions for the registry key SharedAccess
Today I've changed permissions for the registry key HKLM\SYSTEM\CurrentControlSet\Services\SharedAccess (under which FirewallRules are stored) removing "Everyone" and "Users" in ...
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ping windows machine from remote server
I have a cloud remote server which runs ubuntu. From this server I am able to ping my local mac laptop, but unable to ping my windows desktop.
I have tried the following firewall settings on windows:
...
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How to allow specific program through Linux firewall?
I have ufw/gufw with the following rules:
Deny all incoming and also deny all outgoing.
Now I want to add an exception to these rules:
Let's say I have a custom web browser named MyBrowser and I want ...
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Why does my virtual machine (Debian on Proxmox) not respond to a TCP SYN of another VM even though it arrives?
I got a very strange problem and I am out of ideas to solve it. I hope anyone over here has a helpful idea.
Some info about the virtual machines:
VM0: Debian 10 - 192.168.10.102 [+ 2 more interfaces]
...
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Can't port forward a minecraft server with my TP-Link router
I am trying to set up a modded MC server for me and my friends, and therefore i need to open my ports on my router.
I have spend hours, and feel like I've tried everything there is to try. I am using ...
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How to have Windows firewall send RST packet for blocked port
Is there any way to instruct windows firewall to send Reset packets for a blocked TCP connection instead of dropping the packet?
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Assigning static address to device via Cisco ADSM
(Tried asking this over in Server Fault, but they rejected it because -- despite the Cisco ASA usually being considered enterprise hardware -- they insist home networks are out of bounds. Sigh. My ...
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lftp hangs up on "connecting" when tried to use ACTIVE mode
I need to use lftp in active mode (due to some limitations on the server side). So I have set up the following ~/.lftprc config-file:
debug
set ssl:verify-certificate no
set ftp:port-ipv4 148.X.X.86
...
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IPTables issue allowing queries to DNS server
I've been given a task to create a DNS server for a subdomain with a delegated DNS zone. I did test the zone file and using the dig tool, I can confirm it is working when called for localhost and the ...
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How to fix my localhost resolution on Windows?
I was developing a simple react app and wanted to test it on my phone. For that every time I do npm start it runs a react-scripts module that launches the browser to show the project you're doing as ...
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Mikrotik Firewall rule to drop everything
I would like to make rules that will allow traffic only from certain mac addresses, and drop everything else. Do you have any ideas? I have tried /ip firewall filter add action=drop chain=forward But ...
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Issues with ARP I think? And bridged interface
I work with a large school district network. We are having issues with our content filter associating all IP addresses to the same MAC address (the gateway MAC address). I have the content filter in ...
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662
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Allow Local Computers to Access Any Port in Windows Firewall
I want to enable any computers on my local network to connect to each other directly. I had to use this command in PowerShell to add a new rule to the receiving computers:
New-NetFirewallRule -Name ...
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Port Address Translation strange behavior: port 80 appears to be open from outside but outside connections do not work
This is my configuration:
Host machine: Windows 10 X64 21H2 (i7 + 64GB ram)
Hypervisor type 2: VMWare Workstation 16.2.4
Guest machine: Windows 10 X64 21H2 (16GB ram)
Modem/Router: Livebox Fibra (ISP ...
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nftables or fw4 issue with timebased traffic rules
Since the OpenWRT ver > 22.3 does use NFTABLES instead of IPTABLES
I got issue with some firewall (fw4) time based traffic rules that I
have no idea how to solve them.
The firewall rule is as ...
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How to configure Filezilla server on an Azure VM?
I want to create a Filezilla server on Azure VM. And for that I have configured basic settings on the server. And now I'm successfully able to connect to the server via local network (If I test on the ...
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How to delete Windows Firewall Rule when Firewall Services are disabled
We were trying to add IP addresses to Inbound rules of Windows 2012 firewall to a ban list to stop hackers from accessing the remote desktop. This system is a dedicated hosting server and is only ...
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Leverage stateful UDP firewall for Wireguard servers in NATs
I have a "client-server" setup composed of one Wireguard server computer and one client, both under their respective NAT. I want these to communicate without port forwarding on the client's ...
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What exactly does configuring Windows Defender Firewall to allow/forbid an app to communicate on private/public networks do?
I've installed some app, let's say Syncthing, on my Windows computer. When I run it for the first time, Windows Defender Firewall notifies me:
Windows Defender Firewall has blocked some features of ...
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Is it possible to allow a cmd command line script in the firewall of windows?
I have a cmd file with this command line:
curl.exe --output index.html --url https://aaaa.com
But I get an error that says it is not possible to communicate with the url in the port xxx.
If I create ...
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How to setup firewall rules to allow whitelisted IP for communication over eth0
I have to setup firewall rules for my onboard network(for list of device which are connected via eth0 interface) during boot up of Linux device.
By default all communication over eth0 should be ...
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SMB File share is reachable through ping but its not accessible from file explorer
A specific SMB share hosted on an Azure VM used to be accessible from File Explorer on all on-premises servers, however the share is no longer accessible on almost all servers, even though no changes ...
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Why open 123/udp in both directions?
When using an NTP server in an environment with a firewall, it is common to open 123/udp in both directions. So my question is, why is it necessary to open it in both directions?
For example, when ...
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Firewalld DNAT Subnet translation
I want to translate subnets using firewalld.
I have a ethernet interface, that should translate incomming packets targeting
192.168.1.0/24 to 192.168.178.0/24.
My home network is 192.168.8.0/24
I ...
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IP works on server, but not able to connect on local network
I hae been trying to have an owncloud server on my jetson nano. The installation and setup for the server is done and it works. But for some reason the server is not accessible on my LAN.
When I use ...
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iptables forwarding stops working after suspending or rebooting
I am trying to forward packets received by a PC on port 16080 to port 3389 to another PC connected to it via Ethernet, where enp1s0 is the Ethernet interface and 10.42.0.66 is the IP of the connected ...
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How to completely disable internet access on Linux with the exception of select Docker containers?
I am trying to build a setup akin to a "Qubes OS Lite", but using Docker containers on Arch.
There will be several end-user applications running in Docker (with the help of https://subuser....
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Running all traffic to bypass local firewall
I am on a monitored university network(I live here) and am unable to reach much of the internet, vpn's are also banned, as in they can't establish connection. So I figured I could get a server on ...
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Disable software inserting firewall rules
I'm using Ubuntu 20.04 with Postfix, Dovecot and UFW,
when installing both Postfix and Dovecot I immediately noticed they're adding their own rules into iptables, however using the UFW commands I can'...
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Router intrusion messages in activity log. What does it mean?
Today I decided to check my router security logs cuz I've had connectivity issues and I noticed something unusual and new to me, I noticed this line
Intrusion -> SRC=190.71.82.227 DST=xx.xx.xxx.xx ...
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Windows server 2016 VPS blocking connection even with firewall disabled
I have a windows server 2016 VPS and I want to open ports on it. I went on windows firewall and created an inbound rule to allow tcp connections to the specified port. I even completely disabled the ...
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What is the purpose of the windows firewall prompt?
Example:
What is the purpose of this prompt? Pressing 'Cancel' doesn't block the program from accessing the internet, so... what does accepting this prompt allow the program to do?
I haven't been ...
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Unable to access Oracle Cloud MC server despite following Stack/Google port setup advice
Ive been attempting to set up a Bedrock Minecraft server on a free Oracle VM. I have some experience as I have a server running on a Hetzner instance however a few weeks later after scouring the ...
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Could in-place upgrade of Server 2012 to 2019 affect firewall rules or IIS sites?
An application I support has been installed on Windows Server 2012. The server is to be upgraded to Server 2019 in an in-place upgrade. This is to be done without being tested first.
The application ...
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Synology NAS not accessible remotely after move. Possible firewall issue?
I am a remote administrator for a client who recently moved physical office locations. I'm having an issue with reconnecting back into the Synology NAS that they use for file store. From what they've ...
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pfsense - slow connection to internet from wired network but not from wireless/wifi
summary: internet speed tests indicate that the connection to the internet from my wired network is very slow, while speed tests from a device on my wifi network gets the expected (much faster) result....
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Where are Windows 7 Firewall custom rules stored?
First of all, I know about the existing answers to the question. They mentioned three places in the system registry:
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\WindowsFirewall
...\SYSTEM\...
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autapf port forwarding tool - UDP port forwarding
We're using NetworkActiv AUTAPF 2.2.6 tool on Windows 11 PC to setup a TFTP server on windows PC.
The configuration are as follows:
We're seeing timeout errors on our system with this setup as ...
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