1. You have decided to use SNAT and PAT on your small office network. At minimum, how many IP addresses must you obtain from your ISP for all five clients in your office to be able to access servers on the Internet?
To use SNAT and PAT for all five clients in your office to access servers on the Internet, you would need a minimum of one public IP address from your ISP. With one public IP address, you can perform Network Address Translation (NAT) and Port Address Translation (PAT) to allow multiple clients to share the same public IP address for Internet access.
To calculate the minimum number of IP addresses you need for all five clients to access servers on the Internet using SNAT and PAT, we need to consider the number of clients and the IP address requirements.
Since you are using SNAT (Source Network Address Translation) and PAT (Port Address Translation), you can use a single public IP address for multiple private IP addresses.
SNAT translates the source IP address of outgoing packets from the private IP address of a client to a single public IP address. PAT adds port numbers to uniquely identify different connections.
To determine the minimum number of IP addresses, we need to allocate one public IP address for SNAT and PAT translation. And since you have five clients, the minimum number of IP addresses needed is:
1 (SNAT/PAT) + 5 (clients) = 6 IP addresses
Therefore, you need at least six IP addresses from your ISP for all five clients in your office to access servers on the Internet with SNAT and PAT.