Hi everyone, currently i have problem relate to vpn l2tp vpn. i have set up l2tp vpn for long time, and it work normally.
at the moment my company start to join vpn site to site with partner. after i done configure and active vpn, all my l2tp vpn remote access user can't connect, but if i disable vpn site to site, l2tp vpn remote access can connect properly.

anything you don't clarify, please let me know. thank before hand.

Make sure your IPsec secret is the same for the tunnel and the VPN client.

Make sure your IPsec secret is the same for the tunnel and the VPN client.

Hi, as I describe above, if i disable vpn site to site, my client can remote access. but if i enable vpn site to site, my cleint can't.

My win 10 PC can connect using L2TP to my RB751, that 751 is using an EOIP tunnel to another 751, nothing drops.

Does your log show any error messages?