Documentation for sysctl parameters? I've found a magic bullet for one of my problems, namely:

net.ipv4.ip_local_port_range

My linux beard instinct is telling me that how wide I'm setting this too (15000 65000) is dangerous.  However, I cannot find any documentation other than 'suggestions are: x y.'

Are there any hard manpages for this kind of thing?  sysctl 8/sysctl.conf 5 manpages are a bit lean.

I just want a hard 'this is exactly what this does' with potential dangers (what I'm really looking for) of changing it kind of documentation.