I want to protect my LAN from internet with Cisco PIX firewall 525 series.I want to open all ports for outbond traffic (from LAN to internet) and close all ports for inbond traffic (from internet to LAN).
Here is the document, where you will get sample configuration for PIX to protect internal network from internet. here is an internet router as well, but if you dont have this router in your network then you can ignore it :
Just to add to that the firewall will by default protect your internal hosts so you do not need any configuration there. However, providing access from internal clients to the internet does require some basic configuration and there are a few different ways this can be achieved. The following article covers these different approaches of establishing connectivity through the PIX firewall:
