Postfix home server
If you have a mail server at home and your Internet service provider (ISP) has no right PTR record for your assigned IP, you will get trouble the most mail servers will reject you. Some best examples...
View ArticleUnbound DNS-Server
Unbound is a validating, recursive, and caching DNS server alternative to BIND(Berkeley Internet Name Daemon) its a software product from NLnet Labs, VeriSign, Nominet, and Kirei. And of course its...
View ArticleMac OS X 10.8 flush DNS cache
I came across this Apple specific DNS cache situation this morning. I changed a DNS record for my GIT-server and was trying to access it again, the DNS was still showing the old IP-Address. After some...
View ArticleHide BIND sever version from nmap
Security fix for the DNS infrastructure to hide the the sensible information about the version and potential security critical bugs. Edit your named.conf.options and add the following additional 3...
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