A Banner is like a text message received from the host. It contains information about the services running on the host along with information about the ports.
Here I've used some common ports like
- 20/21: FTP
- 22: SSH(Secure Shell)
- 23: Telnet
- 25: SMTP
- 80: HTTP
- 156: SQL Server
- 443: HTTPS
Banner info includes
- Type of request
- Content-type
- Content-length
- Date
- Referrer-policy
