Question | Answer |
Application | 7- End user layer |
Presentation | 6- Syntax, Encrypt/decrypt |
Session | 5- Sync/send, Logical ports |
Transport | 4- TCP, host-to-host, flow control |
Network | 3- Packets, contains IP addresses |
Data Link | 2- Frames, contains MAC address |
Physical | 1- Physical Structure |
20 | FTP data |
21 | FTP control |
22 | SSH |
23 | Telnet |
25 | SMTP |
53 | DNS |
69 | TFTP |
80 | HTTP |
110 | POP3 |
123 | NTP |
143 | IMAP |
443 | HTTPS |
161 | SNMP |
POP3? | Mail is downloaded locally then deleted from server upon successful retrieval |
IMAP? | Mail is not deleted upon retrieval, and is located on a central server |
Exchange? | Microsoft email software running on a server, synchronized between nodes |
3389 | RDP |
43 | WhoIs |
H.323? | Components- terminals, gateways, and gatekeepers
-requires more configuration on the gateway, compared to MGCP |
SIP(Session Initiation Protocol)? | -uses a request/response method to establish communications between various components in the network |
Media Gateway Control Protocol (MGCP)? | -enables a call agent (media gateway controller) to remotely control and manage voice and data communication devices at the edge of multiservice IP packet networks |
Skinny Client Control Protocol (SCCP) | -uses Cisco-proprietary messages to communicate between IP devices and Cisco CallManager |
Extensible Messaging and Presence Protocol (XMPP) | -a communications protocol for message-oriented middleware based on XML |