A classroom lecture. VPN site to site, VPN host to the site, VPN host to host. IPsec and GRE protocols are used in VPN. SSL is very popular for today's VPN. PPTP is an older layer 2 secure connection but is being replaced by RADIUS servers. A quick took at Cisco's TACACS. XML is both human and machine-readable which makes up Web Services. Unified Voice Services have taken on whole new importance during the COVID crisis. A look at Network + questions and answers. A classroom coverage of Network + exam objectives

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