This blog provides some tables covering common Internet (IP whether TCP or UDP) ports that may be found on CompTIA entry level exams. A continuation of my series addressing content useful for candidates preparing for CompTIA A+ or Security+ exams. Allow me to recap my goal with this series: For instructor-led CompTIA classes, see … Continue reading CompTIA Series – Internet Ports
COMMON PORTS packetlife.net TCP/UDP Port Numbers 7 Echo 19 Chargen 20-21 FTP 22 SSH/SCP 23 Telnet 25 SMTP 42 WINS Replication 43 WHOIS 49 TACACS 53 DNS 67-68 DHCP/BOOTP 69 TFTP 70 Gopher 79 Finger 80 HTTP Ports from 1024 on are freely useable. As an example, you could use port 30443 for SSL VPN if your VPN gateway supports port reassignment and the SSL VPN client (if any) does this as well. If you access SSL VPN via web portal you can add the custom port number in the URL like this: " https://mysslvpnserver.com:30443 ". “Common ports” is a further refinement of the port ranges of Well Known Ports to describe those ports that are commonly found across multiple systems. For example, you will likely find ports such as 22/SSH, 25/SMTP, 80/HTTP, and 443/HTTPS, open within most organizations. Aug 29, 2016 · Email Ports – POP3, IMAP and SMTP Port Numbers In this tutorial, you’ll learn most commonly used Email protocols and port numbers such as POP3, IMAP and SMTP on the Internet for email services. Email servers across the Internet use protocols for sending and retrieving emails. Oct 04, 2018 · Ports are identified with positive 16-bit unsigned integers, ranging from 0 to 65535. Other services use this port number to communicate with the service or app. Port numbers are divided into three ranges: well-known ports, registered ports, and dynamic or private ports. Well-known ports (also known as system ports) are
Sep 09, 2009 · If your intent is to hide the SSH port your going to need more then just using an uncommon port. Their are freely distributed tools that can be used to query server ports, if someone is going to target your server they can easily do a full port scan of every single port on the server.
“Common ports” is a further refinement of the port ranges of Well Known Ports to describe those ports that are commonly found across multiple systems. For example, you will likely find ports such as 22/SSH, 25/SMTP, 80/HTTP, and 443/HTTPS, open within most organizations.
May 15, 2019 · However, as the term ‘SSL’ is more popular, widely known and recognized, the technology is known as SSL. Why Is My SSL Port Important? With reference to the SSL ports mentioned above, you would be having a clear picture about the SSL ports for HTTP and for HTTPS. Your SSL port is a crucial factor for a number of reasons.
Apache will listen on the ports defined with these configuration options. Replace them, and Apache will listen on a different port. However, you still need to tell Apache what to serve on the ports above. Suppose you want Apache to start listening on port 8080 (plain), and 4433 (ssl). Then you need to replace the Listen directives to