IPsecP | Protocols | Well-known Ports | Comptia Security Plus

IPsecP - Protocols - Well-known Ports, Comptia Security Plus

When configuring Access Control Lists on Firewalls its reailly important to know the defaults ports.

VPN - IPSec: When you want to make a secure connection between two locations (2 office or from the home to the office). Best practice is to create a Virtual Private Network (VPN). This VPN should use a secure protocol called IPSec. IPSec is short for IP Security.

IPv$ is 32 bits long, IPv6 is 128 bits long.

Well known port numbers:

1. Port 20 and 21: FTP data and FTP control, respectively
2. Port 22: Remote login protocol secure shell (SSH)
3. Port 23: Telnet, used for accessing system remotely but is not very secure
4. Port 25: Simple Mail Transfer Protocol (SMTP) used by e-mail servers
5. Port 53: DNS protocol
6. Port 80: Used for accessing Web servers
7. Port 110: The POP service or Post Office Protocol used by local e-mail clients to retrieve mail from servers
8. Port 123: NTP to synchronize time with remote time servers
9. Port 143: E-mail clients can use the Internet Message Access Protocol (IMAP) to retrieve mail from servers
10. Port 443: This is the Hypertext Transfer Protocol (HTTP) Secure that combines the HTTP with a cryptographic protocol, which can be used for secure transmission of data from Web pages.
11. Port 631: The Internet Printing Protocol (IPP) used to print to printers located remotely on the network
12. Port 3306: The standard port for MySQL
13. Port 1433: The port for MS SQL connections
14. Port 139 is utilized by NetBIOS Session service
15. Port 3389 Remote Desktop Protocol (RDP)




IPsecP | Protocols | Well-known Ports | Comptia Security Plus

IPsecP - Protocols - Well-known Ports, Comptia Security Plus

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