# Identify Failed Registrations for SIP User-agents

To identify attempts using invalid users:

1. On the MiVoice Border Gateway main page, click the Security tab and click SIP User-agent filtering.

2. In the page that opens, under SIP User-agents of failed registrations, the Attempts using invalid users field displays the invalid users trying to get access.

To identify attempts using invalid passwords for a known user:

1. On the MiVoice Border Gateway main page, click the Security tab and click SIP User-agent filtering.

2. In the page that opens, under SIP User-agents of failed registrations, the Attempts using invalid passwords for a known user field displays the users that have forgotten their passwords.

Parent topic: SIP User-agent Filtering
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