Cisco CCNP Security Core (SCOR) 350-701Network SecurityEasy
A network security administrator is configuring a new firewall policy to allow only HTTPS traffic to a web server. Which standard port number should be explicitly permitted?
- A21
- B80
- C3389
- D443
Show answer & explanationAnswer & explanation
Correct answer: D. 443
HTTPS (Hypertext Transfer Protocol Secure) uses TCP port 443 by default for secure communication over the internet. This port must be opened on the firewall to allow HTTPS traffic.
Why the other options are wrong
- A. Port 21 is typically used for FTP (File Transfer Protocol).
- B. Port 80 is typically used for HTTP (Hypertext Transfer Protocol), which is unencrypted.
- C. Port 3389 is typically used for RDP (Remote Desktop Protocol).
HTTPS Port
HTTPS (Hypertext Transfer Protocol Secure) is a secure version of HTTP that uses SSL/TLS encryption, typically operating on TCP port 443.
- Encrypts communication between a web browser and server.
- Protects data integrity and confidentiality.
- Uses TCP port 443 by default.
Memory trick: Secure web is always on 443, like a safe house.