i just received 3 units, i had ordered from DHgate. in the process of testing them, i found out that the problem with them is due to a factory default cgminer setting "api-allow" that is set to accept commands from "W:0/0". what i did is i ssh'd in and manually configured the setting to "W:127.0.0.1,W:192.168.1.0/24". i wasn't sure which of the files were responsible, so i changed all that i can find, in /etc and /config. this is also a good time to change queue to 1 instead of the factory 8192.
2 of the s4+'s are exhibiting hotter temperature, 6C hotter than yours. the one normal acting one is at 70C/71C, which i'm not worried about. i am in contact with bitmain support about this and hopefully they can help me resolve this problem. i'm squeamish about opening them up and readjusting heatsink/reapplying thermal paste, hopefully i can get RMA units sent to me instead.
also, has anyone updated their firmware to s4p_20150518? after updating the option to halt units at 80C has been changed to 95C! i think this is a bit dangerous as i'm concerned about other components in the unit being able to operate safely at this kind of heat level. anyone care to chime in on this?
http://i.imgur.com/BGGU8pn.png
Well, it happened! All of my S4+ (6 in total) have been hijacked...
http://i.imgur.com/MKLHdlL.png
I have different passwords for each device, and they are bulletproof... I've read some posts here and it seems that the developers of cgminer have reported that this will happend to bitmaintech but they didn't care... Even KNC Miner Neptune can restrict access to specific IPs... Seems like the only solution is to put the devices behind a firewall, which is a bit annoying, as the solution would be so easy!
Why can I not access the device by ssh and adjust cgminer api? It keeps telling me access denied (on all devices), altough password is correct for sure... Is there some kinda default user/password for ssh?
Thanks for your help
2 of the s4+'s are exhibiting hotter temperature, 6C hotter than yours. the one normal acting one is at 70C/71C, which i'm not worried about. i am in contact with bitmain support about this and hopefully they can help me resolve this problem. i'm squeamish about opening them up and readjusting heatsink/reapplying thermal paste, hopefully i can get RMA units sent to me instead.
also, has anyone updated their firmware to s4p_20150518? after updating the option to halt units at 80C has been changed to 95C! i think this is a bit dangerous as i'm concerned about other components in the unit being able to operate safely at this kind of heat level. anyone care to chime in on this?
http://i.imgur.com/BGGU8pn.png
btw: it would be great if it was possible to restrict ui access, I only want the miner to be accessible from one (or more) ips... would appreciate if bitmain tech could add this feature in a future firmware upgrade 
Well, it happened! All of my S4+ (6 in total) have been hijacked...
http://i.imgur.com/MKLHdlL.png
I have different passwords for each device, and they are bulletproof... I've read some posts here and it seems that the developers of cgminer have reported that this will happend to bitmaintech but they didn't care... Even KNC Miner Neptune can restrict access to specific IPs... Seems like the only solution is to put the devices behind a firewall, which is a bit annoying, as the solution would be so easy!
Why can I not access the device by ssh and adjust cgminer api? It keeps telling me access denied (on all devices), altough password is correct for sure... Is there some kinda default user/password for ssh?
Thanks for your help