PLEASE INCLUDE EXPLANATION AND SCREENSHOT

.. ptables 1. In an Ubuntu (version 12.04, 14.04 or later preferred) environment, make sure iptables is installed. Call this host firevall1. 2. Install a permissive firewall setup. Scan your network from outside the firewall using nmap 3. Establish rules to enact the following restrictions on the outside interface: passively ignore any traffic inbound to the interface that says it's coming from the server itself (obvious spoof attempt) allow new inbound TCP connections to the ssh, web, and NFS servers on their standard ports. The NFS server should only accept connections from a host named client. What other rules are necessary to make NFS work? allow inbound and outbound ICMP ping requests and replies e allow new outbound TCP connections to ssh and web servers. passively ignore all other traffic. (Do not allow it or respond to it in any way.) 4. Again, scan your network from outside the firewalsing nmap