My WebVPN config:
UC_520#sh runn | b webvpn
webvpn gateway SDM_WEBVPN_GATEWAY_1
ip address 171.71.232.88 port 443
ssl trustpoint TP-self-signed-995375956
inservice
!
webvpn install svc flash:/webvpn/anyconnect-win-3.0.3050-k9.pkg sequence 1
!
webvpn context SDM_WEBVPN_CONTEXT_1
secondary-color white
title-color #CCCC66
text-color black
ssl authenticate verify all
!
!
policy group SDM_WEBVPN_POLICY_1
functions svc-enabled
svc address-pool "SDM_WEBVPN_POOL_1"
svc keep-client-installed
svc dtls
virtual-template 1
default-group-policy SDM_WEBVPN_POLICY_1
aaa authentication list sdm_vpn_xauth_ml_1
gateway SDM_WEBVPN_GATEWAY_1
max-users 20
inservice
!
end