ASA 5505 VPN no access to inside network

Question

Trying to set up ipsec/l2tp vpn to provide full access to internal network for remote users with only Windows built-in vpn client.
The vpn client can connect successfully, but can't see anything on the inside network.
The ASA is not the gateway for hosts on the internal network
name x.y.z.129 isp-gateway
name 172.16.1.0 vpn-address-pool
name 10.11.10.0 inside-network
name x.y.z.128 outside-network
same-security-traffic permit inter-interface
same-security-traffic permit intra-interface
access-list vpn extended permit ip inside-network 255.255.254.0 vpn-address-pool 255.255.255.0
access-list outside_access_in extended permit ip any any
global (outside) 1 interface
nat (outside) 1 vpn-address-pool 255.255.255.0
nat (inside) 0 access-list vpn
nat (inside) 1 0.0.0.0 0.0.0.0
route outside 0.0.0.0 0.0.0.0 isp-gateway 1
ciscoasa# show route
Gateway of last resort is cic-gateway to network 0.0.0.0
C    outside-network 255.255.255.128 is directly connected, outside
S    172.16.1.5 255.255.255.255 [1/0] via isp-gateway, outside
C    inside-network 255.255.254.0 is directly connected, inside
S*   0.0.0.0 0.0.0.0 [1/0] via isp-gateway, outside

Answer 1

Do you configure split tunnel or no split tunnel policy?
Also when you are connected and try to access internal network, can you pls share the output of :
show cry isa sa
show cry ipsec sa