how do i restore a saved configuration in a cisco pix 515e

i have pix 515e that i configured for about 1 year it was working perfectly until yesterday  my inside interface doesn't go out .taht means taht all my local hots can't go to the internet and my static nats are not working.i have made a backup of my configuration and would like to restore it. ven the configuration are the same in the running config now. but i would like to go back to factory configuration and them restore the pix with the saved configuration.can anyone help me?
prdmezaAsked:
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grbladesConnect With a Mentor Commented:
Here is a guide on using config net
http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_tech_note09186a008072142a.shtml

Note though that just like pasteing in a new configuration it always does a merge and therefore you have to start with an empty config in order to make sure the restore is identical to when you did the backup.
Therefore you sill need to manually configure the network parameters via a console connection and hence it is often easier to erase the config and just paste in the full configuration as I described earlier.
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grbladesCommented:
Did you save the configuration after making the change?
If you didnt then you can use the 'reload' command to reboot the pix and reload the saved configuration.

If you did save it then run the 'write erase' command which will erase the saved configuration and then you can issue the 'reload' command and at this point the system will be at factory defaults. You can then connect over the console port and pase in your saved configuration.
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prdmezaAuthor Commented:
thanks but you ve shown me how to get it to the factory defaults,but how to i restore the backup?
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grbladesCommented:
You have the backup as a text file somewhere?

After you have restored it to factory defaults connect via a console cable and go into configuration mode (conf t) and simply cut and paste the backup config in. Then save the config using 'wri mem'.
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prdmezaAuthor Commented:
just like that and it will work?
i'll try it than i'll let you know
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prdmezaAuthor Commented:
do you know config net? how do i get it to work? what are the exact line codes?
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prdmezaAuthor Commented:
excuse me to be stupid,when i erase the config  what will be the default password for enable mode?
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grbladesCommented:
It wont prompt you for a password.
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