If you have hosted VOIP files on your server, check to see if appConf.htm is one of those files then block the following IP Address from getting access. Once this is done, contact the Support Department of your VOIP program to gain any patches to strengthen your online software to help in stopping appConf.htm exploits.
Specify impossible match behavior, trailing # behavior,
digit map matching strings, and time out value.
Navigate to: http:///appConf.htm#ls
Changes are saved to local flash and backed up to
-phone.cfg on the boot server.
Changes will permanently override global settings unless
deleted through the Reset Local Config menu selection