The protocol that NTP uses is port 123 and can be allowed using UFW by using the following command. sudo ufw allow 123/udpCopy Conclusion Hopefully, you will have learned how to set up Chrony on your Ubuntu device as an NTP server. Setting up this NTP client is relatively simple, and ...
To protect your server from external threats, set up a firewall. UseUFWto control which ports are open: sudo ufw allow 3724/tcp # WoW login sudo ufw allow 8085/tcp # Game world connection Troubleshooting Common Issues Connection Problems Can’t connect to your server? Here’s how to fix ...
We need to have SSH up and running on our machine and configured it to allow SSH public key authentication. If not: $ sudo apt-get install openssh-server $ sudo ufw allow 22 First, we have to generate an SSH key for thehduseruser: $ ssh-keygen -t rsa -P "" Generating public/pri...
Open the Port on the XDR Collector Host Ensure incoming traffic is allowed on UDP port 9207. Linux sudo ufw allow 9207/udp Windows netsh advfirewall firewall add rule name=“Sophos UTM Firewall Events” dir=in action=allow protocol=UDP localport=9207 ...
sudo ufw status //check 3.set cfg file in etc /etc/exports: /home/llb/nfs 10.30.11.*(rw,sync,no_root_squash) /etc/hosts.deny portmap:ALL locked:ALL mounted:ALL rquotad:ALL statd:ALL /etc/hosts.allow portmap:10.30.11. locked:10.30.11. ...
Open the Port on the XDR Collector Host Ensure incoming traffic is allowed on UDP port 9201. Linux sudo ufw allow 9201/udp Windows netsh advfirewall firewall add rule name="Check Point Firewall Events" dir=in action=allow protocol=UDP localport=9201...
sudo ufw allow <PORT>Copy You can even take this a step further by adding the protocol you expect a connection to communicate on with this port. sudo ufw allow <PORT>/<PROTOCOL>Copy 4. If you are connecting to your Raspberry Pi remotely, the two protocols that you are likely to use ...
And since your linux instance is likely Ubuntu, try opening the firewall port like the below: sudo ufw allow 8080/tcp More relevant documentation can be found athttps://www.ibm.com/docs/es/spectrum-scale/5.1.0?topic=firewall-examples-how-open-ports. ...
阻止访问某个端口:ufw deny {PORT} 对某个 CIDR 阻止访问某个端口:ufw deny from {CIDR} to any port {PORT} 删除某个规则:ufw delete {RULE}|{NUM} 可以是之前执行的命令中的 RULE,例如,如果之前执行了ufw allow 443,要删除此规则,可以使用ufw delete allow 443,其他类似 ...
ips=($(ip -4 -o -f inet addr show | grep 'scope global dynamic' | tr -s ' ' | cut -d' ' -f4)) && if [ ${#ips[@]} -ne 1 ]; then echo "multiple networks found, cannot determine IP address"; \ else (set -x; sudo ufw allow from ${ips[0]} to any port 50002,...