What security technique could provide secure access to a server located in a small office without the expense of implementing a DMZ or purchasing a hardware firewall?

What security technique could provide secure access to a server located in a small office without the expense of implementing a DMZ or purchasing a hardware firewall?

  • implement hash encoding for all wireless devices
  • implement MAC address filtering
  • implement port forwarding
  • implement basic security on all wireless access points
    Explanation:

    Port forwarding provides a rule-based method to direct traffic between devices on separate networks. This method provides access to devices across the Internet in a less expensive way than using a DMZ.