Created
January 17, 2014 03:50
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Instructions to disable the CWMP interface on OpenRG based routers
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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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