OTP in FreeRADIUS

OTP in FreeRADIUS

One time passwords (OTP) are a very safe way to implement two factor authentication. So I looked for a easy possibililty to use OTP in FreeRADIUS. I also wanted to use smart phone based OTP generators, since everybody has such a device nowadays. Finally I found a …

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DNS requests dropped at the firewall

My customer saw a very strange behaviour of DNS packets. Some of the packets where dropped at the firewall. Since this caused a short delay I was asked to do some analysis. It turned out I had to debug an IPv4/IPv6 glibc problem. But first things first…

What happened …

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