as title says, I tried to create a PPTP vpn connection I didn't find any option for PPTP under setting and network in CentOS 8 default DE which is Gnome, Then I tried install KDE plasma as I'm familiar with more than Gnome and I think KDE packages installed pptp for me as I switched back to Gnome I got on option for creating PPTP VPN, now I've create a vpn connection but when I try to turn it on, it fails right away and switch back its state to turn off right away.
Also I tried this tutorial here : https://linuxconfig.org/how-to-establis ... el-7-linux
here is some input might be usefull :
/var/log/messages
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Mar 4 16:44:56 localhost NetworkManager[1203]: <info> [1614863696.2938] audit: op="connection-activate" uuid="c592935a-8655-4343-9824-6f2fd5f5ac3e" name="PPTP" pid=12339 uid=1000 result="success"
Mar 4 16:44:56 localhost NetworkManager[1203]: <info> [1614863696.2971] vpn-connection[0x558479684360,c592935a-8655-4343-9824-6f2fd5f5ac3e,"PPTP",0]: Started the VPN service, PID 16376
Mar 4 16:44:56 localhost NetworkManager[1203]: <info> [1614863696.3027] vpn-connection[0x558479684360,c592935a-8655-4343-9824-6f2fd5f5ac3e,"PPTP",0]: Saw the service appear; activating connection
Mar 4 16:44:56 localhost journal[12339]: Invalid VPN service type (cannot find authentication binary)
Mar 4 16:44:56 localhost journal[12339]: Invalid VPN service type (cannot find authentication binary)
Mar 4 16:44:56 localhost NetworkManager[1203]: <error> [1614863696.3401] vpn-connection[0x558479684360,c592935a-8655-4343-9824-6f2fd5f5ac3e,"PPTP",0]: Failed to request VPN secrets #3: No agents were available for this request.
Mar 4 16:44:56 localhost NetworkManager[1203]: <info> [1614863696.3425] vpn-connection[0x558479684360,c592935a-8655-4343-9824-6f2fd5f5ac3e,"PPTP",0]: VPN plugin: state changed: stopped (6)
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Linux localhost.localdomain 4.18.0-240.15.1.el8_3.x86_64 #1 SMP Mon Mar 1 17:16:16 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux