All Questions
26
questions
0
votes
0
answers
40
views
How to allow direct connection to plex media server
im trying to set up plex media server on ubuntu server os.
i installed the plex media server and when im trying to watch in the same network everything is ok.
the problem starts when i try to stream ...
- 21
0
votes
1
answer
49
views
Network card issues after reinstall of 20.04
PC with PCI Lan card and motherboard Lan had previously worked fine on 18.04 and 20.04, was upgraded to 22.04 but found application compatibility issues so reinstalled 20.04. Now the integral Lan is ...
0
votes
0
answers
979
views
Not able to load iptables
I am trying install iptables for UFW but having issues with it.
Here is how I am installing iptables:
agganu@agganuserver:~$ sudo apt-get install iptables
Reading package lists... Done
Building ...
- 1
0
votes
1
answer
2k
views
My server can't connect to anything through 443
I tried to connect to paypal, github and stripe from my server and every connection attempt ended with a "connection timed out". I use ufw as my firewall I have the default incoming rule is ...
- 41
0
votes
1
answer
107
views
iptables Explicit Allow Policy
I am attempting to setup an Explicit Allow policy on my 20.04 Ubuntu web server. By running the following:
iptables -P INPUT DROP
Also added rules for ssh, http and https. Resulting in the following ...
- 103
1
vote
1
answer
4k
views
UFW firewall create connection issues
I have installed UFW on my VPS server using apt install ufw when I use ufw enable to start the firewall, after that my putty session expires and I can no longer login with that ssh key I have either ...
- 13
0
votes
0
answers
486
views
No internet access without VPN after updating from 18.04 to 20.04
After updating to Ubuntu 20.04 LTS internet stopped working without VPN (I use Cloudflare WARP)
righthaze@desktop ~ ping google.com
PING google.com (216.58.215.110) 56(84) bytes of data.
ping: ...
2
votes
1
answer
5k
views
probleme running ufw on Ubuntu 20.04.3
I'm new to Ubuntu and to try it out I've installed the Ubuntu app from Microsoft store and running it on my windows 10 laptop, I tried to enable the UFW but I got this:
:~$ sudo ufw enable
ERROR: ...
1
vote
1
answer
6k
views
does adding a rule to iptables mean it takes effect immediately?
I run sudo iptables -A INPUT -p tcp -m tcp --dport 2222 -j ACCEPT in bash and then tried to connect to that machine via another machine on the same LAN / subnet via port 2222 with PuTTY and it didn't ...
- 221
0
votes
1
answer
177
views
ufw is listening to tcp6 on OCI and cloudflare ssl certificate
netstat -ntlp | grep LISTEN
tcp 0 0 127.0.0.xx:53 0.0.0.0:* LISTEN 809/systemd-resolve
tcp 0 0 0.0.0.0:22 0.0.0.0:* ...
- 25
0
votes
1
answer
324
views
Configuring sshguard for more than one port
I am running sshd on more than one port, say 22 and 2222.
I have installed sshguard to the system. How can I configure it to guard against attacks on all the ports defined in sshd's configuration?
...
- 11.3k
0
votes
1
answer
369
views
My Firewall script is blocking nginx Rtmp Client connection
My server is running Nginx Rtmp Server on Port 1935
I am running a firewall script to block bad clients who connect on my server over 30 times on any tcp Port
with the following script
#!/bin/sh
# ...
- 35
1
vote
1
answer
4k
views
Unable to add rules to /etc/ufw/before.rules and before6.rules
I run a high-traffic NTP server and the following rules are absolutely necessary to prevent my conntrack table from being immediately overrun (regardless of how large it is):
iptables -t raw -A ...
- 301
1
vote
0
answers
211
views
Ufw blocks incoming and outgoing connections
To update firewall rules, reloading ufw ufw reload blocking incoming and outgoing connections for around 2 seconds, untill it completes reload process.
I have set already the default policy deny for ...
- 31
0
votes
0
answers
41
views
Which system apps need internet?
I want to set up the firewall gufw to only allow a browser and only OS stuff that needs the internet (to get updates, and whatever else). It's 20.04 LTS and I'm just using it to browse the internet ...
- 1
0
votes
1
answer
2k
views
How to set up iptables to access my apache2 server from public IP
I've got my Oracle Cloud instance on ubuntu 20.04 and I set up apache2 server. It's working from curl localhost but It doesn't work from my instance public IP. My ufw status:
Status: active
To ...
user1150482
11
votes
1
answer
12k
views
Why is my port closed when accessing from the network?
I have read so many pages, and tried so many things, but am stuck here.
I have a freshly installed Ubuntu 20.04 server. And on it I run a Django test server (just to try it out). It is running and ...
- 304
0
votes
1
answer
2k
views
Firewall won't work on Ubuntu
I use Ubuntu 20.04 and firewall won't work on my device.
I get this message when trying to start firewall with systemctl start firewall:
root@agent:/usr/bin# systemctl start firewall
Job for firewall....
- 1
5
votes
2
answers
34k
views
On Ubuntu 20.04 how do you open a port in the firewall
Googled and found nothing recent. I did find docs on ufw and I ran:
thomas@Westeros:~/git/heavyweight-software$ sudo ufw status verbose
[sudo] password for thomas:
Status: inactive
So I'm thinking ...
- 1,489
4
votes
2
answers
15k
views
VNC Server port is closed
I installed TigerVNC server on my Ubuntu server but I can't connect to it. The server is running but when I try to scan for open ports (in LAN) using my phone, 5901 is closed.
Output of nmap localhost:...
- 1,112
2
votes
0
answers
3k
views
Cant ping with UFW enabled
I am having an issue with UFW on Ubuntu 20.04. I am running a Nextcloud server on this machine, and my default is to deny incoming and outgoing, except for port 443 which works fine. This is causing ...
- 35
0
votes
1
answer
393
views
UWF how to and not working
How do I use UFW for firewall and how can I see if it is working, I don't think it is, I tried to block my computer from accessing my website using ufw and it still allowed me to access it. I am using ...
- 530
1
vote
0
answers
71
views
Is there a personal firewall package/software with GUI available for Ubuntu desktop 20.04?
A tool with similar GUI to glass-wire for windows to Allow & Block network connections by particular App and IP
Good to have Features are
GUI showing live network traffic
GUI to see the network ...
- 657
1
vote
2
answers
2k
views
Cannot use apt/curl/wget/git but can Ping
I have a raspberry pi running ubuntu server 20 and cannot connect to the internet, but can use ping. This question has been asked by many before, however the solutions provided in those questions do ...
- 31
0
votes
0
answers
76
views
How do I block ips from accessing my sever with UFW
I want to try to block my computer's IP (192.168.0.3) as a test from accessing anything on my server, and more importantly, my website, when I use ufw deny 192.168.0.3 it says Rule added, After ...
- 530
2
votes
1
answer
8k
views
Allow specific mac address access to remote server through the ubuntu firewall
I want to allow a specific mac address to access a specific port on a remote server . That port routes to a web application. What command should I use ? Can I do that via ubf(ubuntu firewall) ?
- 121