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→Set-up Firewall Policies
#Traffic on the loopback interface for each virtual machine is allowed.
#The host machine (and only the host machine) must be able to ssh to them. ICMP traffic is allowed if it originated within the local network only.
#Allow an exception to allow mail messages to be relayed from your '''pine STMP server ''' to your '''fir IMAP server'''.
#Other than that, only the traffic necessary to support their roles described below should be allowed.