global (outside) 1 interface
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
static (inside,outside) x.x.x.17 x.x.x.228 netmask 255.255.255.255 0 0 
static (inside,outside) x.x.x.18 x.x.x.232 netmask 255.255.255.255 0 0 
static (inside,outside) x.x.x.19 x.x.x.185 netmask 255.255.255.255 0 0 
static (inside,outside) x.x.x.20 x.x.x.207 netmask 255.255.255.255 0 0 
access-group outside_access_in in interface outside