Cisco – ASA/PIX enable ASDM

fw01a> enable
Password:
fw01a# configure terminal
fw01a(Config)# interface ethernet1
fw01a(Config-if)# nameif inside
fw01a(Config-if)# ip address 192.168.1.1 255.255.255.0
fw01a(Config-if)# no shutdown
fw01a(Config-if)#

Activate ASDM and enable http server.

fw01a(Config)# asdm image flash:/asdm.bin.
fw01a(Config)# http server enable.

Open a connection for your inside network.

fw01a(Config)# http 192.168.1.0 255.255.255.0 inside

Make sure all your config running properly.

fw01a(Config)# show running http
http server enabled
http 192.168.1.0 255.255.255.0 inside
fw01a(Config)#

Now your Cisco ASA/PIX can be access from your PC, open your web browser then enter this address https://192.168.1.1/admin