Strange dmesg UFW messages… lots of them I’ve done some digging but haven’t been able to find something that explains below message I found in dmesg? It’s obvious the UFW firewall is blocking something, but I am not having any success in tracking down what is causing it. [1170462.231472] [UFW BLOCK] IN=ens3 OUT= MAC=01:00:5e:00:00:01:d8:d5:b9:00:68:9c:08:00 SRC=0.0.0.0 …
How to define port forwarding I run a server with a web server running as a rootless podman container. This exposes ports 10080 and 10443 because, as a rootless container, it is not allowed to expose ports 80 and 443. So that my website can be accessed from outside, I use ufw as a firewall …
UFW Couldn't determine iptables version I am building a custom embedded Linux platform based on the NXP i.MX8 with Yocto. I want to use UFW to setup the firewall. When I boot the system and try to use UFW it returns an error Couldn’t determine iptables version. I have the iptables and nftables packages installed. …
strange entries in ufw log I have a very permissive firewall configuration, where I have almost all ports open: $ sudo ufw status verbose Status: active Logging: on (low) Default: allow (incoming), allow (outgoing), deny (routed) New profiles: skip To Action From — —— —- Anywhere ALLOW IN 127.0.0.1 Anywhere ALLOW IN 10.0.0.0/16 53 DENY …
Can not block torrent traffic in my Ubuntu 22.04 vps I have an Ubuntu 22.04 vps which I want to block all torrent traffic on it. I tried Iptables by this commands : iptables -I FORWARD -m string –algo bm –string "BitTorrent" -j DROP iptables -I FORWARD -m string –algo bm –string "BitTorrent protocol" -j …
UFW not blocking connection I am using the Cloudflare IPv4 and IPv6 lists to block all connections to my server from any IP that is not owned by Cloudflare. When I run sudo ufw status on the server I get: Status: active To Action From — —— —- 80,443/tcp ALLOW 173.245.48.0/20 # Cloudflare IP 80,443/tcp …
ufw (firewall) cant see active forward rules I have a working port forward on my firewall (ufw). I can enable and disable the rule – and it works. What I dont understand is, that the rule cannot be seen when doing: ufw status That command only show open port on the firewall itself. My question …
Is there a way to use Cockpit while UFW is enabled? I currently have Ubuntu 20.04 installed. I’m having issues with UFW that are preventing me from using Cockpit. When I try to load IP:9090 into Firefox, it will just continuously try to load with a blank page nonstop. I also had an issues where …
How to access/view local web server via public IP? Good day everyone. I’m running an Ubuntu desktop 22.04. I’m new to linux world for about a month or so. I already configure my router for port forwarding. When I was developing this web app in windows, I got no problem with accessing it via public …
NFTables and g(ufw) I am going to install Xubuntu 22.04 on one of my computers and i have a question about firewall. As i understand Ubuntu use NFTables now. I have noticed some information about Debian (which is base for Ubuntu) using NFTables now. And Debian wiki says If you want to enable a default …
UFW not fully loading rules on startup I have a server with default deny and several UFW rules. UFW is enabled on startup (systemctl enable UFW). When I reboot only some of the rules don’t get applied properly and I can’t access some services. I can SSH into the server, and the lower ports (<1024) …
What is the behavior of a UFW rule that does not specify a protocol? This is such a basic question I was surprised I couldn’t find the answer, but here we are. With the following rule: 22 ALLOW 192.168.1.0/24 Are all protocols allowed or is TCP assumed? Asked By: Powerkey || Source This is directly …
My Ubuntu Server Ports got locked I just tried to join to my Jenkins on my VPS as usual. When I try to access the URL it returns the error code ERR_CONNECTION_TIMED_OUT. This happens as well with port 8080 for my website and other ports. I can join to my SSH session. The ports are …
Should I be concerned about these UFW blocked traffic? I just installed ufw on a newly provisioned Ubuntu 22.04 Server. It is currently set up to deny all traffic except ssh on an alternate port. I’m getting this pattern of blocked traffic: Oct 6 10:09:57 mydomain kernel: [ 285.236376] [UFW BLOCK] IN=eth0 OUT= MAC=[myMACaddress] SRC=92.63.197.132 …
SMTP IP forwarding to another machine Apologies if this is a silly mistake this is the first time ive had to set up port forwarding. I have two machines I have one machine set up as a DMZ (192.168.0.67) when all traffic inbound will hit first. I have configured a second machine to be an …
Why is UFW blocking acces to SSH via Wireguard? 192.168.100.50 is connected to 192.168.178.20 over the internet via wg0 interface. wg0 is opening up the tunnel 10.102.242.1/24. The wireguard client interface has 10.102.242.2. Through a static route on 192.168.100.1 I can connect from any device in 192.168.100.0/24 to the wireguard client using ssh admin@192.168.178.20 But …
Questions re ufw settings I have been running Ubuntu 20.04 desktop since last February, and I configured and enabled ufw at that time. I have questions on the output below. sudo ufw numbered To Action From [ 1] Anywhere ALLOW IN 192.168.0.0/24 [ 2] 80/tcp ALLOW IN Anywhere [ 3] 443/tcp ALLOW IN Anywhere [ …
What stops an attacker from breaking into your system without firewall? My question is short but concise. If you don’t configure a firewall, can someone "just ssh" and brute force into your system if they know your ip address? Asked By: stackcen || Source This answer assumes you are a desktop home user of Ubuntu. …
ufw "command not found"- but as the root user! My Debian 11 VPS is running now for about 2 weeks- and today I just wanted to analyse, why my traffic is ~70GiB (counted by bashtop). So somewhere in the net I read about nethogs, that this could help. So I installed it with my non-root, …
How can I block the internet but keep wifi available for RDP using UFW? I’m accessing my Ubuntu machine using RDP from a Windows desktop, in the same wifi network (that is, I’m only using RDP locally, not through the internet). I want to disable all internet traffic, but still allow WLAN traffic, because I …
