Hello people,
Some time ago I bought two Escam QD520 ip cameras in order to monitor my backyard at my house. Everything worked fine for 3 months (sending Emails on detection / FTP upload on detection), but suddenly it stopped. Cams cannot connect to none of SMTP server (gmail, yahoo, net.hr, any...) and FTP upload of motion detection sometime worked, sometime it uploaded a blank jpeg picture. Accessing Cams using Web interface works with no problems.
Does anyone have sympthoms like that with their QD520?
Anyhow, I contacted the manufacturer and in simple ENGRISH they said " yes yes we aware of problem, we fix it in few days", well more than few days passed - they haven't fixed it yet. I had some free time so i fired up a Wireshark and sniffed my network traffic in order to determine whats going on. I hope some of you can shine some light or lead me in the right direction
Gmail server / cam communication:
POP3 server:
IMAP server:
Basically, Camera does initiate some communication between Email servers but it doesn't authenticate and send mail. In Gmail there is BAD CERTIFICATE error in comunication, and on other POP3/IMAP there is just HELLO server / client welcome.
Other problem is FTP upload:
I have local FTP storage set on the same network, sometimes jpeg files are uploaded okay, sometimes blank, sometimes partially
Hex view of uncomplete image:
Hex view of empty image: (no header, no data)
Camera firmware version is: V4.02.R12.00006510.10010.1407 any ideas how to resolve the problem?
Cameras have Telnet enabled, I also have dumped firmware with all filesystem files if that helps
Some time ago I bought two Escam QD520 ip cameras in order to monitor my backyard at my house. Everything worked fine for 3 months (sending Emails on detection / FTP upload on detection), but suddenly it stopped. Cams cannot connect to none of SMTP server (gmail, yahoo, net.hr, any...) and FTP upload of motion detection sometime worked, sometime it uploaded a blank jpeg picture. Accessing Cams using Web interface works with no problems.
Does anyone have sympthoms like that with their QD520?
Anyhow, I contacted the manufacturer and in simple ENGRISH they said " yes yes we aware of problem, we fix it in few days", well more than few days passed - they haven't fixed it yet. I had some free time so i fired up a Wireshark and sniffed my network traffic in order to determine whats going on. I hope some of you can shine some light or lead me in the right direction
Gmail server / cam communication:
POP3 server:
IMAP server:
Basically, Camera does initiate some communication between Email servers but it doesn't authenticate and send mail. In Gmail there is BAD CERTIFICATE error in comunication, and on other POP3/IMAP there is just HELLO server / client welcome.
Other problem is FTP upload:
I have local FTP storage set on the same network, sometimes jpeg files are uploaded okay, sometimes blank, sometimes partially
Hex view of uncomplete image:
Hex view of empty image: (no header, no data)
Camera firmware version is: V4.02.R12.00006510.10010.1407 any ideas how to resolve the problem?
Cameras have Telnet enabled, I also have dumped firmware with all filesystem files if that helps
