Hello all,
My old Actiontec gt784 DSL modem was dying so I replaced it with a used Actiontec C1000A. I had a script setup to login via telnet to the 784 twice a day and modify the configuration to enable NAT loopback and extra static IP addresses my ISP provided me. This was in case the modem rebooted due to a power outage or some other issue.
I'm trying to do the same with the C1000A modem and am running into a couple problems. Originally I had the CAC003-31.30L.86firmware on the device so by default telnet was disabled but SSH port was available. I made the mistake of upgrading to CAC004-31.30L.95 and now the SSH port is no longer enabled: the firmware adds drop entries in the iptables input chain for the SSH destination port on both the ATM0 and BR0 interfaces regardless of the firewall settings. The second issue is that the configuration setting to enable the telnet console interface is reset after every reboot. It has to be re-enabled on the web-interface before I can telnet into the modem after a power cycle.
So I have two questions:
1) how can I downgrade the firmware back to CAC003? I tried it through the web-interface, but it errors out saying it doesn't allow downgrading firmware. I found some information on the OpenWRT wiki about the CFE bootloader that appears to be on the C1000A and how to boot it into firmware loading mode. Has anyone tried it?
2) is there anyway to set the configuration on the modem so the telnet console is enabled after a reboot? I could try writing a script to automate the web fields to enable the console, but I'd prefer not to have to.
Thanks for your interest.
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