Re: Anyone running C-Data OLTs?

[blakangel () gmail com]

Well here are a couple hundred:

https://www.shodan.io/search?query=Command+Line+Interface+for+EPON+System

-Keith

Mel Beckman wrote on 7/10/2020 1:07 PM:

> Perhaps you’re confusing OLT with ONT? An OLT is a “curbside” 
> distribution node, the ONT is the CPE. The vulnerability is in the 
> distribution node, not the CPE. No provider with any sense exposes 
> their distribution node admin interface to the Internet.
>
> -mel via cell
>
> > On Jul 10, 2020, at 1:01 PM, mel () beckman org wrote:
> >
> > The “WAN” port of an OLT _is_ it’s management port. Data, IPTV, and 
> > VoIP traffic pass on VLANs, typically encrypted. These are passive 
> > optical network (PON) devices, where all CPE in a group of, say, 32 
> > premises receive the same light via an optical splitter. Thus network 
> > partitioning is a requirement of the architecture. There is no 
> > concept of a traditional “WAN” port facing the Internet.
> >
> > -mel via cell
> >
> > > On Jul 10, 2020, at 12:21 PM, Owen DeLong <owen () delong com> wrote:
> > >
> > > 
> > > Um, from the article it appears that this isn’t on the Management 
> > > interface, but the WAN port of the OLT.
> > >
> > > Owen
> > >
> > >
> > > > On Jul 10, 2020, at 11:01 , Mel Beckman <mel () beckman org 
> > > > <mailto:mel () beckman org>> wrote:
> > > >
> > > > But who, who I ask, opens their management interface to the public 
> > > > Internet?!?!
> > > >
> > > > Maybe this is vulnerability if you have a compromised management 
> > > > network, but anybody who opens CPE up to the Internet is just 
> > > > barking mad :-)
> > > >
> > > > -mel via cell
> > > >
> > > > > On Jul 10, 2020, at 10:00 AM, Owen DeLong <owen () delong com 
> > > > > <mailto:owen () delong com>> wrote:
> > > > >
> > > > >  
> > > > > https://www.zdnet.com/article/backdoor-accounts-discovered-in-29-ftth-devices-from-chinese-vendor-c-data/?ftag=TRE-03-10aaa6b&bhid=29077120342825113007211255328545&mid=12920625&cid=2211510872 
> > > > >
> > > > >
> > > > > Wow… Just wow.
> > > > >
> > > > > Owen