internet connection with PPTP client

hello

I bought RB951-2n and I would like to create PPTP client option with WIFI.
my ISP gave me:
username
password
gateway IP: 10.0.0.1
DHCP is giving IP address, DNS

i turned Mikrotik up and plug my ISP lan cable to WAN port, after I created PPTP client connection with my informations(username, password, gateway IP). i saw that I got IP and DNS(DHCP client is default on WAN interface). but when i open some page my ISP redirects me to their CAPTIVE portal saying that I’m not connected? (seems that Mikrotik is just bridging my WAN and LAN connection)
how to force Mikrotik to send all traffic using PPTP connection?
do I have to create some NAT rule?(there is default NAT rule created)
or do I have to create some routing rules?(only default rules are created)
thanks :slight_smile: