Post date: Dec 24, 2013 1:21:57 AM
So a friend of mine lent me an STC branded ADSL modem router. I used it as a wifi access point when I was jumping from hotel to hotel by disabling the DHCP server and plugging the provided internet connections into the LAN side. The modem looked a bit like a picture frame and had no identifiable markings on it and I never thought much of it... until the other day.
I discovered it's a Huawei HG520B with STC branding. And it seems I cannot make it create a PPPoE connection and connect off the LAN side. Even if I could it forces an @stc in the PPPoE login. There is no unbranded firmware that I can find and my attempts at fetching and extracting the current firmware have been of limited success. With only 2mb of flash, the DD-WRT guys aren't interested in it. I was able to disable some of the STC specific configuration but I guess I just had to get a real router.
Anyway, here is what I learned:
It's actually a quite a feature rich router. It can:
bridge vci/vpis to vlans on each interface
do basic policy routing
TR-069 provisioning
stateful packet inspection
RIP
ADSL2+
Login usename/pass: Afaq_shamel/stccpe_2007
Default IP: 192.168.1.1
Stop the username from changing to Afaq_shamel on reboot:
telnet 192.168.1.1
Password: stccpe_2007
HG520s> sys view autoexec.net
wan adsl rate off
wan dmt2 db tlb 2
wan dmt set bngrelink 0
wan hwdmt afe set ecpause 4000 4000
wan ghs set multi_number 3 2
wan atm vc service 2
wan atm vc action ovr
wan atm vc rxchk on
ip igmpsnoop swigmpadvprxy on
ip igmpsnoop advproxyport ff
sys resetbtntime 6
wan dmt2 set largeD 2
sys adminname Afaq_shamel
wan dmt2 set pmonoff off
wan dmt eoc dyingasp off
sys cwmp recvtimeout 30
w dmt2 set lpr off
ether portreverse on
HG520s> sys edit autoexec.net
EDIT cmd: q(uit) x(save & exit) i(nsert after) d(elete) r(eplace) n(ext)
wan adsl rate off<n>
wan dmt2 db tlb 2<n>
wan dmt set bngrelink 0<n>
wan hwdmt afe set ecpause 4000 4000<n>
wan ghs set multi_number 3 2<n>
wan atm vc service 2<n>
wan atm vc action ovr<n>
wan atm vc rxchk on<n>
ip igmpsnoop swigmpadvprxy on<n>
ip igmpsnoop advproxyport ff<n>
sys resetbtntime 6<n>
wan dmt2 set largeD 2<n>
sys adminname Afaq_shamel<d>
wan dmt2 set pmonoff off<n>
wan dmt eoc dyingasp off<n>
sys cwmp recvtimeout 30<n>
w dmt2 set lpr off<n>
ether portreverse on<n>
Turn off dhcp and stuff:
set lan dhcp none
sys feature tr069 0