April 2014 Archives

Mon Apr 21 15:16:58 CEST 2014

new sendmail on old ips

Some leisure work done during Easter Monday, resulting in:

220 ips.marshlabs.gaertner.de ESMTP Sendmail 8.14.8/8.14.8; \
    Mon, 21 Apr 2014 15:05:52 +0200

A current sendmail, build from source with just minimal tweaks (adjusting for optimizer limits and new-style syslog-routines). Nothing that exciting, unless you take into account that ips is running Ultrix-4.4, which is 20 years older than this sendmail-release.


Posted by neitzel | Permanent link | File under: done, marshlabs, bsd

Tue Apr 1 22:00:00 CEST 2014

clamping down on NTP ddos attacks

Lotsa reading upon IOS-12.1 and restricting access to the NTP service running on my cisco switches {shake,rattle,roll}.marshlabs.gaertner.de

It turns out that IOS is employing something quite similiar (but a bit simpler) as ntp.org-ntpd with its restrict clauses. Also learned: using ntpdc (in particular where ntpq does not exist).


Posted by neitzel | Permanent link | File under: learned, done
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