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OMREX
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ORPORATION
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STAC Product Manual
35
It’s fairly straightforward to serve STAC IP information around a LAN, but
things become more complex when STAC IP needs to be delivered over
the public Internet. In essence, STAC can be treated like any other Internet
server in that it requires a known, public IP address to be accessed. If your
network infrastructure has a firewall that prevents unsolicited traffic from
entering or blocks off all ports other than those that are “well-known” or
uses Network Address Translation (NAT), you will need to modify your net-
work to allow STAC to deliver STAC IP to the outside world.
It’s not possible to make specific recommendations on how to alter any-
one’s network to allow this. We recommend consultation by an IT profes-
sional to set up or make changes to your network. We can, however, make
the following general suggestions:
1) If you cannot remotely access STAC IP, don’t assume that it’s always the
fault of the network on the STAC side. Double check the STAC IP settings
(especially the netmask and gateway settings). Try a different computer. Be
sure you have Macromedia Flash 6 or higher installed. Try another browser
if possible.
2) By definition, Network Address Translation (NAT) and Internet servers
are not compatible. If your network uses NAT, you will need to locate STAC
in front of the NAT device to obtain a publicly accessible IP.
3) If you do suspect firewall issues, try opening port 8080 to TCP traffic on
your firewall. You’ll need this port to be open on your client’s firewall as
well.
4) If you do find that your network won’t allow a server, investigate a Virtu-
al Private Network (VPN). This will allow you to keep your firewall security
settings for the general network, but looser settings for STAC, with the VPN
providing its own security.
5) A VPN is a good idea even for those without network access issues. STAC
only provides a simple password protection and allowing external access
only via VPN increases security dramatically.
6) Check the Comrex support page at
http://www.comrex.com/support
for updates. We will post any info we get on network compatibility.
D
ELIVERING
STAC IP
O
UTSIDE
THE
LAN
E
NVIRONMENT
