Got it. But if no failure log. fail2ban will not work. So how can we protect fs from this kind of attack besides manually setup firewall rules 1 by 1 on discovery?<br><br><div class="gmail_quote">On Tue, Jan 4, 2011 at 12:54 AM, Brian West <span dir="ltr"><<a href="mailto:brian@freeswitch.org">brian@freeswitch.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div style="word-wrap:break-word">Chances are he never received the challenge.. thus never logs an auth failure.<div><br>
</div><font color="#888888"><div>/b</div></font><div class="im"><div><br><div><div>On Jan 3, 2011, at 9:26 AM, xuyan yang wrote:</div><br><blockquote type="cite"><span style="border-collapse:separate;font-family:Helvetica;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing: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" target="_blank">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></div></div><br>_______________________________________________<br>
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