[RFC] Q&A propose to add into FAQ

[Warren Block]

> Q8: This server of mine is a public DNS and it seems to be rejecting
> connections because of too many TCP connections with "TIME_WAIT" status
> (from "netstat -an"). How can I reduce the timeout?
> A8: In short, tune the sysctl value "net.inet.tcp.msl" to something
> modern and acceptable, such as 7500.
> In detail, the default timeout value for TIME_WAIT status is set to 60
> seconds. This value is based on RFC 793. Since this RFC is drafted in
> year 1981, equipments & bandwidth of that time wasn't as fast as what we
> have now. A 60 seconds of waiting, for TCP session to terminate is a
> long time. For a busy server opening & closing TCP connections, this
> value should set to a fairly short time, such as 15 seconds.
> The value of "net.inet.tcp.msl" is not the usual "literal" seconds
> though. In order to reduce from the default 60 seconds to 15 seconds,
> convert it to milliseconds and then divide it by 2. For example,
> when 15 seconds is converted to 15,000 milliseconds, it then should
> divide by 2, which sums up as "7500". This will be the value for
> "net.inet.tcp.msl".

> Q9: I just updated /etc/newsyslog.conf. How do I check for syntax error?
> A9: Use the parameter "-nvv" when executing "newsyslog". For example,
> "newsyslog -nvv" would tell what are each of the lines in
> /etc/newsyslog.conf would do when the time comes.

While these are helpful, they are not frequently asked.  They would be 
better suited to the Configuration and Tuning chapter of the Handbook.