You can ban inappropriate URL or contents that contain keywords such as pornography, torrentz etc using signature blocking option in MS ISA.
Step1 create an allow access policy as follows
| name | Action | Protocols | listener | To | Condition |
| Allow users | Allow | HTTP HTTPS |
Internal Local Host |
External | All Users |
Step2 Right click on Allow policy you just created>Configure HTTP>Signature>Add
Click ok>Apply>Ok>Apply on ISA Management console
Similarly, you add more signature to block. Now the entire contents/url will be blocked whenever any user search or browse it.
