good question. the s3 has many more options then the s5 does..
are all your s5s connected to one network? you can always setup a vpn and connect to that through the firewall.. then you would have complete access to all the miners.
Looks like it runs lighttpd i can edit the lighttpd.conf file. if i mess this up will hitting the reset button on the miner do anything?
http://redmine.lighttpd.net/boards/2/topics/4110