How to execute a script when a client connects via VPN?

Question

linux

Good day!
The task is simple, but I can’t find a normal solution for two days. I am a VPN server, I have three remote clients, I have pptpd up. They connect to me and get ip addresses from chap-secret , each one needs to execute a script when connecting, each to his own. Tell me how to implement?

Answer 1

/etc/ppp/ip-up.d/
create a script, on connection it will be run with parameters
$1 interface name used by pppd
$2 tty device name
$3 tty device speed
$4 local IP address for interface
$5 remote IP address
$6 parameter specified by option 'ipparam' in pppd