Just in case anyone is using Blockhosts (http://www.aczoom.com/blockhosts/) with their Linux servers and Asterisk here are the rules necessary to block invalid users: "asterisk-NoPeer": r'Registration from .* failed for \'{HOST_IP}\' - No matching peer found', "asterisk-NoAuth": r'Registration from .* failed for \'{HOST_IP}\' - Username/auth name mismatch', "asterisk-NoPass": r'Registration from .* failed for \'{HOST_IP}\' - Wrong password', Just add these rules to your /etc/blockhosts.conf file. -- Telecomunicaciones Abiertas de M?xico S.A. de C.V. Carlos Ch?vez Prats Director de Tecnolog?a +52-55-91169161 ext 2001 -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 198 bytes Desc: This is a digitally signed message part Url : http://lists.digium.com/pipermail/asterisk-users/attachments/20100831/03dbe141/attachment.pgp