How to enable Port Forwarding in Iptables Rumi, April 17, 2015 Port forwarding allows remote computers, for example, computers on the Internet, to connect to a specific computer or service within a private local area network (LAN). Typical applications include the following: Running a public HTTP server within a private LAN Permitting Secure Shell access to a host on the private LAN from the Internet Permitting FTP access to a host on a private LAN from the Internet In Linux, you can configure port forwarding using iptables command. The below example is to enable the port forwarding of port 80 of the external ip address “83.229.64.2” to the port 80 of the computer inside the LAN with the ip address of “192.168.1.2”. iptables -t nat -A PREROUTING -i eth0 -d 83.229.64.1 -p tcp --dport 80 -j DNAT --to-destination 192.168.1.2:80 iptables -A FORWARD -p tcp --dport 80 -j ACCEPT Related Administrations Configurations (Linux) Networking iptablesNAT
Perfect Proxmox Template with Cloud Image and Cloud Init January 28, 2023January 30, 2023 Instructions Choose your Ubuntu Cloud Image. Here in this example will use ubuntu cloud-init image. Download Ubuntu (replace with the url of the one you chose from above) wget https://cloud-images.ubuntu.com/focal/current/focal-server-cloudimg-amd64.img Create a new virtual machine qm create 8000 –memory 2048 –core 2 –name ubuntu-cloud –net0 virtio,bridge=vmbr0 Import the downloaded Ubuntu… Read More
Install and configure fail2ban January 4, 2015 Servers do not exist in isolation, and those servers with only the most basic SSH configuration can be vulnerable to brute force attacks. fail2ban provides a way to automatically protect the server from malicious signs. The program works by scanning through log files and reacting to offending actions such as… Read More
Configuring SpamAssassin for Postfix on CentOS May 23, 2020 In the process of receiving email, spamassassin will stand between the outside world and the email services running on your server itself. If it finds, according to its definition rules and configuration, that an incoming message is spam, it will rewrite the subject line to clearly identify it as such…. Read More