The default account for all Cisco IDS running v4 is 'cisco' with the password set to 'cisco' as well.
There are no other accounts configured on the appliance as part of the default software installation. If you cannot login using the default account, either because you have forgotten or do not know the password, the quickest way to repair the problem is to re-image the device using the appropriate recovery CD or application image.
Restoring a Cisco IDS appliance using this method will restore the 'factory settings' on the system, including the default login.
I hope this helps,
Alex Arndt
