[HamGateNY] Why DNS Records After Creating Public Gateway

[Charles J. Hargrove]

After receiving your allocation, setting up your public gateway address
and linking your subnet to it, some are wondering why the DNS records
for them need to be set up in the database by the state coordinator.

 > What is the DNS on your side for?
 > What is the typical DNS entry usually used?

A typical DNS will always have your callsign followed by ampr.org.
Anything before your callsign typically describes what is is used for.

Some examples could be:
n2nov.ampr.org
gw.n2nov.ampr.org
220.n2nov.ampr.org
webcam.n2nov.ampr.org

While all allocation holders are part of a "mesh" by virtue that their
subnet is linked to a public gateway, connections between us do not hit
UCSD at all. Any use of the "mesh" IPIP encap table locally is via the
AMPR-RIPD program to set up iptables as opposed to manually updating
them. The encap table is broadcast every five minutes to anyone in the
public gateway table with at least one DNS record. I personally use the
DOTUN.SH script to set up the variables for setting up a tunnel on my
Linux box, call the AMPR-RIPD program to accept the encap broadcast and
set up the iptables.

When someone is coming from outside of 44Net, they will enter through
UCSD and the DNS table along with the gateways list will be used to send
them to their destination. Your local security structure will expose
certain ports or require passwords. My JNOS bbs has certain ports open
for things like telnet, chat, ftp, POP3 and all others are set to deny
entry. I then have each user's callsign in a table with their password.
Anyone not in the table is allowed only the minimum permissions of
reading messages or sending a message to the sysop, but no message
creation or node hopping.

-- 
Charles J. Hargrove - N2NOV
NYC-ARECS/RACES Citywide Radio Officer/Skywarn Coord.

NYC-ARECS/RACES Nets 441.100/136.5 PL
ARnewsline Broadcast Mon. @ 8:00PM
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http://www.nyc-arecs.org

NY-NBEMS Net Saturdays @ 10AM & USeast-NBEMS Net Wednesdays @ 7PM
on 7.036 Mhz USB (alt 3.536)/1500 hz waterfall spot; MFSK-16 or 32

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