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Garry ShapeFlag for United States of America

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Windows VPN server allow iPhone connect without username and password?

can you have a windows VPN on a server that allows an iPhone to connect to it, and also not require a username and password?
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Mal Osborne
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Simple answer is yes.

VPN clients can be authenticated using either user credentials, or certificates. IOS versions greater than 5.1 support certificate authentication. Using this, each iPhone needs to be set up with appropriate certificates installed so that it can present one during authentication, have it trusted, and connect. This would typically involve setting up a PKI (Public Key Infrastructure), in a Windows environment, usually employing a Certificate Authority role running on a server.

It is rather complex to set up, but can work well, once everything is in place.
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Thanks so I guess a user/password approach would be more simply? Any VPN solution you recommend I could run in Azure or GCP?
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Mal Osborne
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Does VPN server also need DHCP and DNS or does iPhone use Cell for internet while on VPN
Generally, the device terminating a VPN will refer to an DHCP server for an IP address, and it will get assigned to the client making the connection. Usually, the client will also receive the IP address of a server inside of the LAN for DNS.