tcp port

How do I redirect 80 port to 8123 using iptables?

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Q.I’m using MySQL 5 under Red Hat Enterprise Linux 5. How do I change default mysql server port (tcp port 3306) under Linux or UNIX operating systems?

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How do I open a network port range in the firewall under OpenSuse / Suse Enterprise Linux server? How do open a port range in my firewall, such as the TCP ports 30000 to 35000?

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Q. How do I find out which service is listening on a specific port? How do I find out what program is listening on a specific TCP Port?

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Q. Can you example how can I install telnet service or server under Linux or FreeBSD operating system? A. TELNET (TELetype NETwork) is a network protocol used on the Internet or local area network LAN connections. The telnetd program (telnet server) is a server which supports the DARPA telnet interactive communication protocol. Telnetd is normally […]

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Q. How do I stop or restrict access to my OpenSSH (SSHD) server using Linux iptables based firewall? A. Linux iptables firewall can be use to block or restrict access to ssh server. Iptables command is used to set up, maintain, and inspect the tables of IP packet filter rules in the Linux kernel. However, […]

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