PORT NUMBERS
1. ICMP PORT NO. 1
2. SSH PORT NO. 22
3. FTP PORT NO. 21
4. SFTP PORT NO. 115
5. TELNET PORT NO. 23
6. TELNETS PORT NO. 992
7. SMTP PORT NO. 25
8. HTTP PORT NO. 80
9. HTTPS PORT NO. 443
10. POP3 PORT NO. 110
11. POP3S PORT NO. 995
12. IMAP PORT NO. 143
13. IMPAS PORT NO. 993
14. LDAP PORT NO. 389
15. LDAPS PORT NO. 636
16. NNTP PORT NO. 119
17. SNMP PORT NO. 161
18. NFS PORT NO. 2049
19. IPP PORT NO. 631
