Tinabrought her own laptop. $$Please help them to build a private network between her and Tom$$slaptops$.$Sometime$,$ Tom and Tinalike to work on each other$$ssystem from their own laptop. Please guide them about remote log$-$in$.$ Please explain them about pros and cons of SSH and Telnet. $$Sometimesthey want to share their files with each other over network. Please provide them various alternatives like FTP$,$ TFTP$,$ SCP and SFTP etc with their relative advantages $$They noticed that none of the alternatives worked for them. Please introduce them about various troubleshooting tools at Linux. It can be$,$ wireshark, tcpdump, netstat command etc. $$Also explain them, the relevance and importance of opening of a specific port at firewall to run any server. $$Now they got Internet connectivity and they are about to connect both laptop to Internet. Explain them about possible DoS attack $($and its remedy$)$ if any port is open in the system.Approach to solve: $$Connect Tom and Tina by lan cable or by wireless.$$Run command $$ifconfig$$ to find if they are in same subnet.$$Try ping to other machines.$$If ping is successful then a connection is established.$$Let the communicate via ftp$,$ scp $,$ ssh$,$ etc