Microsoft PPTP VPN will not work behind PIX 501

[plane123]

I have a PIX 501 setup at home. It has out of the box default settings. The "outside" interface is plugged into a cable modem. I have my server plugged into interface 1 of the PIX. It receives it's IP from the PIX and I can get out onto the internet and browse.
Before placing the PIX in front of my Microsoft VPN client using PPTP, I use to be able to VPN into my Corporate network.
Now with the PIX 501 in front,I cannot access the network.
At Corporate we use a PIX 515 for VPN.
Any help would be appreciated.

 

[crazynoodle]

Have you configured the access lists to allow this connection on the Pix 501... If you can post your current 501 configuration - that would help. You can xxx the first two octets of the ip addresses if you wish. You going to need some static nat mappings also..

 

[crazynoodle]

I should of included this but you should have an access-list that permits port 1723 to pass.