You'll have to do it via CLI:
SSH into your appliance and authenticate using same username and password you've setup in WebUI.
If Expert mode password is not set up yet, do so.
change mode to "Expert":
drawbridge> expert
Enter expert password:
You are in expert mode now.
[Expert@drawbridge]#
then use commands in bold to see the connected users, execute vpn management via "vpn tu" and select an option, by pressing corresponding # to either see or delete the session, it will be 1 or 3 to list and 8 to delete:
[Expert@drawbridge]# pep show user all
Trying to run main_pep
Command: root->show->user->all
ID (PDP; UID) Username@Machine CID (IP, PacketID) PT
====================================================================================================
127.0.0.1 :00000000; 24497579 Vladimir 172.16.10.1 , 00000000 -
[Expert@drawbridge]# vpn tu
********** Select Option **********
(1) List all IKE SAs
(2) List all IPsec SAs
(3) List all IKE SAs for a given peer (GW) or user (Client)
(4) List all IPsec SAs for a given peer (GW) or user (Client)
(5) Delete all IPsec SAs for a given peer (GW)
(6) Delete all IPsec SAs for a given User (Client)
(7) Delete all IPsec+IKE SAs for a given peer (GW)
(8) Delete all IPsec+IKE SAs for a given User (Client)
(9) Delete all IPsec SAs for ALL peers and users
(0) Delete all IPsec+IKE SAs for ALL peers and users
(Q) Quit
*******************************************
1
Peer 172.16.10.1, user md5 19647299870406a7:
1. IKE SA <a7248af8edb55d16,33e37a972cdc151d>:
Hit <Enter> key to continue ...
8
Enter IP of peer (format: xxx.xxx.xxx.xxx): 172.16.10.1
Enter peer name (for users):Vladimir
Hit <Enter> key to continue ...
********** Select Option **********
(1) List all IKE SAs
(2) List all IPsec SAs
(3) List all IKE SAs for a given peer (GW) or user (Client)
(4) List all IPsec SAs for a given peer (GW) or user (Client)
(5) Delete all IPsec SAs for a given peer (GW)
(6) Delete all IPsec SAs for a given User (Client)
(7) Delete all IPsec+IKE SAs for a given peer (GW)
(8) Delete all IPsec+IKE SAs for a given User (Client)
(9) Delete all IPsec SAs for ALL peers and users
(0) Delete all IPsec+IKE SAs for ALL peers and users
(Q) Quit
*******************************************
1
Hit <Enter> key to continue ...