Questions tagged [ufw]
Uncomplicated Firewall is a firewall configuration tool for Linux. It acts as a frontend to iptables. Originally designed for Ubuntu, it is available on many Linux distributions.
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How to add time access rule with ufw in Linux?
Does any1 knows if it is possible to add time rule access using ufw ? So far i have found out that it is possible with iptables as shown below but it is possible with ufw:
iptables -A OUTPUT -p tcp -s ...
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Journalctl UFW Error [migrated]
Jul 14 03:52:03 abysslocal kernel: [532579.389726] [UFW BLOCK] IN=enp9s0 OUT= MAC=08:62:66:26:28:c6:04:f4:d8:09:9e:88:08:00 SRC=192.168.4.37 DST=192.168.4.9 LEN=52 TOS=0x00 PREC=0x00 TTL=64 ID=64656 ...
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Abuse complaints on my Hetzner VPS
I have a Hetzner VPS and received an abuse complaint from a website owner that Hetzner forwarded to me. There have been a significant number of connections from multiple IP addresses from my server ...
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Can UFW log rule changes?
Is there a way to make UFW log changes made to firewall rules over time?
I have some automated tooling that temporarily blocks IP addresses from time to time and there seems to be a foot-gun in there ...
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UFW rules allow traffic from any IP to ports 80 and 443 despite specific deny rules
I am configuring UFW on my server to restrict HTTP (port 80) and HTTPS (port 443) traffic to a specific IP address while denying all other traffic. The rules work correctly for SSH (port 22), but ...
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DNS resolution in NAT gateway blocked by ufw
I have a LAN (172.16.0.0/24) and 2 servers:
"Bastion" (172.16.0.3), which has a public IP and can reach internet
"Redis" (172.16.0.4), which doesn't have a public IP and can't ...
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UFW -- Will placing a specific IP above a CIDR allow that IP superseding the CIDR deny?
I cannot reliably get results from my testing .. But if I had said rules in this order:
zak@Web:~$sudo ufw status
Status: active
To Action From
-- ...
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Upgraded from 18.04 to Ubuntu 20.04 - microk8s local DNS resolution stopped working
I have a server that started out on Ubuntu 16.04. I'm trying to get it current so I did an upgrade from 16.04 to 18.04 (Which was mostly trouble free) I let that run for a day to make sure everything ...
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GUFW Graphical Noise, Blurred Options
I installed GUFW but when I run it I have blurred options, buttons, graphical glitches and I can't select any option because I can't see anything.
enter image description here
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Debian firewall allowing connections on port 3000 [duplicate]
I have a Debian server running Rocket Chat. The web interface is on port 3000 and works.
I am trying to configure LetsEncrypt and checking the firewall it appears only port 22 is permitted.
How can I ...
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fail2ban for dovecot not working
i have set up ufw in linux mint and works fine.
in my linux mint box i run dovecot and i see many failure login tries.
I set up fail2ban like this:
[dovecot-pop3imap]
enabled = true
filter = dovecot-...
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Port Forwarding all ports in UFW to a VPN Client on Ubuntu Server
I am running a VPN Wireguard server on Ubuntu 22.04. I am trying to forward all ports from the server to a vpn client on 10.10.10.2. As of now, I have perfected port forwarding for single ports. In /...
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UFW blocks traffic despite there is an allow rule
I have Ubuntu server with OpenVPN server running there.
IP addresses as follows:
enp1s0: 192.168.3.67/24
tun0: 172.18.37.1/24
OpenVPN is configured so that devices behind the VPN client are ...
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How to save custom rule in ufw? Ubuntu 23.10
I am using ufw and I would like to add a custom rule
iptables -I INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
But even following
iptable-save
Upon reboot, the rule is gone.
I also ...
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Ubuntu 20.04 server ignores incoming postfix connections on IPv4, accepts IPv6
I've hacked my server to bits and now I need help.
Everything was working, but I think these issues started when I tried to add a VPN server to this server to test some items at work. That process ...
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