| Port |
Service
|
| 21 |
TCP File Transfer Protocol (FTP)
|
| 22 |
TCP Secure Shell (SSH)
|
| 23 |
TCP Telnet
|
| 25 |
TCP Simple Mail Transfer Protocol (SMTP)
|
| 53 |
TCP Domain Name Service Servers (DNS)
|
| 53 |
UDP Domain Name Service Servers (DNS)
|
| 80 |
TCP HTTP
|
| 88 |
TCP Kerberos
|
| 110 |
TCP Post Office Protocol (POP3)
|
| 139 |
TCP Network Basic Input/Output System (NetBIOS) session Service
|
| 143 |
TCP Internet Mail Access Protocol (IMAP)
|
| 144 |
TCP Secure HTTP (HTTPs)
|
| 10080 |
UDP Amanda Backup Client
|
| 9101 |
TCP Bacula
|
| 9102 |
TCP Bacula
|
| 9103 |
TCP Bacula
|
| 9102 |
TCP Bacula Client
|
| 993 |
TCP IMAP over SSL
|
| 500 |
UDP IPsec
|
| 5353 |
UDP Multicast DNS
|
| 2049 |
TCP NFS4
|
| 631 |
TCP Network Printing Service (Server)
|
| 631 |
UDP Network Printing Service (Server and Client)
|
| 1194 |
UDP Open VPN
|
| 995 |
TCP POP3 over SSL
|
| 1812 |
UDP Remote Authentication Dial In User Service (RADIUS)
|
| 1813 |
UDP Remote Authentication Dial In User Service (RADIUS)
|
| 11111 |
TCP Redhat Cluster Suite
|
| 21064 |
TCP Redhat Cluster Suite
|
| 5404 |
UDPRedhat Cluster Suite
|
| 5405 |
UDP Redhat Cluster Suite
|