Mike, SNMPv3 uses TCP.
Also, I never said I had a daemon listening on port 161, the cable modem would simply reboot if it saw a TCP SYN packet destined to port 161 to IP address space sitting behind my cable modem. FYI - Charter engineers responded to me indicating it's a known bug with this Ubee modem and Ubee is working on a new revision of firmware to fix the bug. On Fri, Aug 26, 2016 at 11:11 AM, Mike <mike-na...@tiedyenetworks.com> wrote: > > > On 08/24/2016 10:39 PM, Gabriel Kuri wrote: > >> I was able to confirm my Ubee >> was susceptible to this bug and would reboot by simply telneting to IP >> space on port 161 behind the modem. I figured my random reboots were >> related to random people port scanning my IP space throughout the day. I >> called support to let them know and got them to bump it up to their >> manager, who then referred it to a "technical specialist" that ended up >> blocking port 161 on my cable modem. >> > Not to be unhelpful, but SNMP is a UDP protocol, you can't "telnet" to > port 161 and be talking to the snmp deamon on the device because it's not > listening for that. If you do get a connection, there's really something > wrong.... > > > -- > Mike Ireton > WillitsOnline LLC > >