Why is RDP unstable (disconnected) when connected via PPTP? How to determine exactly where the problem is?

Question

VPN

Good afternoon! When connecting to RDP via VPN, RDP loses connection and resumes when the vpn connection is restarted. PPTP

settings: User settings:

Tell me where to look for the problem?

Answer 1

It is necessary to look towards MTU/MSS, fragmentation of IPv4 packets. Only tcpdump/wireshark/mikrotik packet sniffer will help you here.

Answer 2

For RDP connections, you should choose those types of vpn that can work through udp. For microts it's ipsec/ikev2.

Answer 3

Subnets (remote, local and VPN) must not match!!! Hence a lot of problems. I suspect that this is exactly what you have, judging by the symptoms and almost default VPN addresses.
Plus, note that your server is running on the default-encryption profile, and clients are connecting with the default profile. Everything you have there is correctly assigned and razruleno?