different between pptp vs pppoa

pptp

pptp From the web:

• what pptp vpn
• what is pptp passthrough
• what is pptp protocol
• what is pptp in router
• what is pptp server
• what is pptp and l2tp
• what is pptp connection
• what is pptp vpn connection

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pppoa

pppoa From the web:

• what is pppoa connection
• what is pppoa and pppoe
• what does pppoa mean
• what is pppoa username
• what does pppoe stand for
• what is pppoe in networking
• what is my pppoa username and password
• what is the difference between pppoe and pppoa