<div dir="ltr">Is that IP in your network or outside (I can ping it so I'm guessing it's outside your network)? Do you have a firewall between your asterisk box and the internet? Is there a WHITELIST of IP addresses that only allow your provider's limited IP pool to connect to your asterisk box from outside?<div><br></div><div>If you are getting TFTP requests hitting your Asterisk box, they are not properly being filtered at your firewall - ftp and tftp are considered insecure communication methods, that port (69 I think) should be closed on your firewall unless you have a really good reason to have it opened (and unless you run a public FTP site, THERE IS NO GOOD REASON).<br><div><br></div><div>Fail2Ban is a BLACKLIST method, blacklists are most effective after good network hygiene is implemented, as you drastically limit the pool of potential bad actors with a whitelist.</div></div><div><br></div><div>Best,</div><div><br></div><div>-Tim</div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Apr 21, 2017 at 9:38 AM, Dovid Bender <span dir="ltr"><<a href="mailto:dovid@telecurve.com" target="_blank">dovid@telecurve.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">This is old news. They use Shodan and then try to connect. Set up Fail2Ban that say after 10 404's to ban the IP.<div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Apr 21, 2017 at 12:27 PM, Jerry Geis <span dir="ltr"><<a href="mailto:jerry.geis@gmail.com" target="_blank">jerry.geis@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">I "justed" happened to look at /var/log/messages...<div><br></div><div>I saw:</div><div><div>Apr 21 12:18:40 in.tftpd[22719]: RRQ from 69.64.57.18 filename 0004f2034f6b.cfg</div><div>Apr 21 12:18:40 in.tftpd[22719]: Client 69.64.57.18 File not found 0004f2034f6b.cfg</div><div>Apr 21 12:18:40 in.tftpd[22720]: RRQ from 69.64.57.18 filename 0004f2034f6c.cfg</div><div>Apr 21 12:18:40 in.tftpd[22720]: Client 69.64.57.18 File not found 0004f2034f6c.cfg</div><div>Apr 21 12:18:40 in.tftpd[22721]: RRQ from 69.64.57.18 filename 0004f2034f6d.cfg</div><div>Apr 21 12:18:40 in.tftpd[22721]: Client 69.64.57.18 File not found 0004f2034f6d.cfg</div><div>Apr 21 12:18:40 in.tftpd[22722]: RRQ from 69.64.57.18 filename 0004f2034f6e.cfg</div></div><div><br></div><div>so basically an sequential read of polycom MAC address config files.</div><div>Some is trying to read to determine if I have any polycom files just sequential read after read.</div><div>And if so - it would get any extension and password at that time.</div><div>Luckily I have none.</div><div><br></div><div>However - how does one block attempts like this ?</div><div><br></div><div>Thanks!</div><span class="m_7476294809382659296HOEnZb"><font color="#888888"><div><br></div><div>Jerry</div></font></span></div><span class="HOEnZb"><font color="#888888">
<br>--<br>
______________________________<wbr>______________________________<wbr>_________<br>
-- Bandwidth and Colocation Provided by <a href="http://www.api-digital.com" rel="noreferrer" target="_blank">http://www.api-digital.com</a> --<br>
<br>
Check out the new Asterisk community forum at: <a href="https://community.asterisk.org/" rel="noreferrer" target="_blank">https://community.asterisk.org<wbr>/</a><br>
<br>
New to Asterisk? Start here:<br>
<a href="https://wiki.asterisk.org/wiki/display/AST/Getting+Started" rel="noreferrer" target="_blank">https://wiki.asterisk.org/wiki<wbr>/display/AST/Getting+Started</a><br>
<br>
asterisk-users mailing list<br>
To UNSUBSCRIBE or update options visit:<br>
<a href="http://lists.digium.com/mailman/listinfo/asterisk-users" rel="noreferrer" target="_blank">http://lists.digium.com/mailm<wbr>an/listinfo/asterisk-users</a><br></font></span></blockquote></div><br></div>
<br>--<br>
______________________________<wbr>______________________________<wbr>_________<br>
-- Bandwidth and Colocation Provided by <a href="http://www.api-digital.com" rel="noreferrer" target="_blank">http://www.api-digital.com</a> --<br>
<br>
Check out the new Asterisk community forum at: <a href="https://community.asterisk.org/" rel="noreferrer" target="_blank">https://community.asterisk.<wbr>org/</a><br>
<br>
New to Asterisk? Start here:<br>
<a href="https://wiki.asterisk.org/wiki/display/AST/Getting+Started" rel="noreferrer" target="_blank">https://wiki.asterisk.org/<wbr>wiki/display/AST/Getting+<wbr>Started</a><br>
<br>
asterisk-users mailing list<br>
To UNSUBSCRIBE or update options visit:<br>
<a href="http://lists.digium.com/mailman/listinfo/asterisk-users" rel="noreferrer" target="_blank">http://lists.digium.com/<wbr>mailman/listinfo/asterisk-<wbr>users</a><br></blockquote></div><br></div></div>