Archive for the 'Computers' Category

Using S.M.A.R.T. under NetBSD

Sunday, 10th of July 2011

NetBSD has supported S.M.A.R.T. for a long time. But this functionality is well hidden. You can enable S.M.A.R.T. and check a single disk like this: # atactl wd0 smart enable SMART supported, SMART enabled # atactl wd0 smart status SMART supported, SMART enabled id value thresh crit collect reliability description                    raw 1 200   51     yes online  [...]

Automated attacks against Postfix

Monday, 13th of June 2011

Yesterday evening I discovered thousands of lines like these in my server’s mail logfile: Jun 12 08:58:37 colwyn postfix/smtpd[25605]: warning: unknown[212.154.6.176]: SASL CRAM-MD5 authentication failed: PDM3MjM3NzE1Mzk1NjU1MDEuMTMwNzg2NTUxNUBjb2x3eW4uemhhZHVtLm9yZy51az4= Jun 12 08:58:44 colwyn postfix/smtpd[25605]: warning: unknown[212.154.6.176]: SASL CRAM-MD5 authentication failed: PDU0MDA0NDczMjgzNjU2NDAuMTMwNzg2NTUyMkBjb2x3eW4uemhhZHVtLm9yZy51az4= [...] Jun 12 23:00:15 colwyn postfix/smtpd[12864]: warning: unknown[212.154.6.176]: SASL CRAM-MD5 authentication failed: PDQ2NjM4MzI0NTAyNTQ2ODIuMTMwNzkxNjAxM0Bjb2x3eW4uemhhZHVtLm9yZy51az4= Jun 12 23:00:26 colwyn [...]

World IPv6 Day

Wednesday, 8th of June 2011

Today is World IPv6 Day where a lot of major websites like Google or Facebook finally support IPv6 access for everyone. Unfortunately they plan to turn IPv6 access off tomorrow. Well, this blog supports IPv6 since its creation. And I don’t have any plans to turn IPv6 access off. Oh, before I forget. Some people hid [...]