Common Ports and Services
| Protocol & Port | Service |
|---|---|
| TCP 22 / 23 | Secure Shell / Telnet |
| TCP 3389 | Microsoft Remote Desktop |
| TCP 5900 | Virtual Network Computing (VNC) |
| TCP 445 | Microsoft Networking & Interprocess Communications |
| TCP 80 /(443) | Hypertext Transfer Protocol (Secure) (HTTP & HTTPS) |
| Protocol & Port | Service |
|---|---|
| TCP 25 | Simple Mail Transfer Protocol (SMTP) |
| UDP 53 | DNS Requests |
| TCP 110,995 | Post Office Protocol 3 (S) - to retrieve or check email |
| TCP 143,993 | Internet Message Access Protocol (S) - retrieving |
| TCP 135,137,139 | Older Microsoft services |
| TCP 21 | File Transfer Protocol (FTP) |
Nmap
- Discover hosts
- Discover services
- Discover OS, applications, vulnerabilities
- Fingerprinting is to send messages back and fort and see how it behaves
- (funny messages or malformed messages)
- Fingerprinting is to send messages back and fort and see how it behaves
- Includes
ncat- Transfer files across the network
nmap --top-ports 20 localhost- Is gonna look for the top 20 most common ports on the localhost machine.