<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Chances are he never received the challenge.. thus never logs an auth failure.<div><br></div><div>/b</div><div><br><div><div>On Jan 3, 2011, at 9:26 AM, xuyan yang wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div><div>2011-01-03 15:19:32.360152 [WARNING] sofia_reg.c:1161 SIP auth failure (REGISTER) on sofia profile 'internal' for [<a href="mailto:music@192.168.0.3">music@192.168.0.3</a>] from ip 192.168.0.6</div><div><br></div><div>So, how can this hacker successfully registered music account and avoid to be baned? it is strange.</div><div><br></div></div><div>Thanks</div></span></blockquote></div><br></div></body></html>