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jgeboski/CWMP-INSTRUCTIONS

Created January 17, 2014 03:50
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Instructions to disable the CWMP interface on OpenRG based routers
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CWMP-INSTRUCTIONS
Verizon FiOS (and possibly other ISPs) deploy CPE routers based on
OpenRG which enable CWMP (port 4567) by default. The CWMP protocol
enables remote management of the CPE device, however, the protocol can
also enable a remote attacker to obtain unwarranted access. The simple
solution is to disable the CWMP protocol, which is done below. Please
note, this operation is likely unsupported by ISPs, so do the following
at your own risk.
Information on CWMP: http://en.wikipedia.org/wiki/TR-069
First off, telnet support must be enabled via the web interface. On my
router (a MI424WR-GEN3I), it can be enabled via:
Advanced -> Local Administration
Then, ensure the router actually has CWMP enabled:
$ telnet 192.168.1.1 23 # Router address may differ
$ conf print /cwmp/enabled
If the above prints `enabled(1)`, then CWMP is enabled. Proceed with:
$ conf set /cwmp/enabled 0
$ system reboot
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