1. On a TCP/IP network every device must have an IP address. The IP address identifies the device e.g. computer.
2. A computer can run multiple applications and/or services. Just as the IP address identifies the computer, The network port ___________________________
3. Read the following alternative definition of ports and fill in the blanks.
4. The use of ports allow computers/devices to _________________________________
5. The diagram below shows a computer to computer connection and identifies the IP addresses and ports.
6. The ports referred to in the context of TCP/IP are …..
7. To use an analogy, if you lived in a house on a street, the IP address corresponds to the ________________
8. In an analogy of houses on a street, all houses share the same street addres (IP ADDRESS). The port number in this case would correspond to the ______________
9. A port number uses ____________ and can have a value from 0 to 65535 decimal. Port numbers are divided into ranges.
10. Port numbers 0 - 1023 are usually well known ports. These are allocated to server services b the Internet Assigned Numbers Authority (IANA). E.g. Web servers normally use ______________ and SMTP use _____________.
11. The 'third' category ports 49152 - 65535 are used by _________________and unlike 'registered ports/semi reserved) they are also called ephemeral ports
12. The client port that a server request is returned to is usually a temporary and arbitary port number. This is a ________________________
13. The default port number for HTTP is 80 - and it is used to identify packets for transfer to the web server
14. Port numbers are never used in providing firewall security as they are not capable of stipulating the destination of information on a network.
15. Other well known port numbers include 20 and 21 for FTP (Data transfer and Command control), 22 for Secure Shell, 23 for Telnet and 443 for ______________