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June 24, 2009
Today's DNS Superstars: Entel Chile
Take a look at the PTRs in 200.72.157.0/24 for a stellar example of why there should be a basic intelligence requirement for anyone touching the IN-ADDR.ARPA zones for any given ISP.
200.72.157.1: pcsistema1.eiser.local
200.72.157.4: pcproyectista1.eiser.local
200.72.157.5: pcsistema3.eiser.local
200.72.157.6: christian.christian
200.72.157.7: pcsecretaria.eiser.local
200.72.157.8: pcdibujante2.eiser.local
200.72.157.9: pcproyectista1.eiser.local
200.72.157.11: pcsecretaria.eiser.local
200.72.157.12: pcsistema1.eiser.local
200.72.157.13: regiones-serena.previred.lan
200.72.157.14: pcproyectista2.eiser.local
200.72.157.15: pcsistema1.eiser.local
[...]
200.72.157.247: pcdibujante2.eiser.local
200.72.157.248: pcsistema4.eiser.local
200.72.157.249: servidordsn.datasoftnet.local
200.72.157.250: pcdibujante1.eiser.local
200.72.157.251: pcproyectista1.eiser.local
200.72.157.252: regiones-serena.previred.lan
200.72.157.253: pcsistema4.eiser.local
200.72.157.254: pcdibujante2.eiser.local
I know, .local is actually a valid DNS suffix, in the context of zero-configuration networking discovery protocols, such as Bonjour or Microsoft Windows Active Directory, if the host is never to be visible from the public Internet. The presence of a few dozen of these very hosts in the CBL zones, however, suggests that something is wrong here, and they are actually capable of reaching the Internet directly. Nice work, guys.
I really should work up a badge for these sorts of things, maybe a bear trap containing a keyboard with hands caught in it.
Posted by schampeo at June 24, 2009 4:26 PM
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