I am 7 days into a 2-year NBN50 plan (HFC) with Optus.
Generally happy despite a speed drop from Telstra non-NBN cable but I have basically no connection when I hook up to my work's VPN. Upload is 0.01MBps, so can't event create an empty folder on the work network drives.
I switch my cable back to the Telstra router and everything works fine on the VPN with good speed.
I thought it might have been the (new model) Sagemcom router, so connected straight to the NBN ethernet cable and got similar results, so the router doesn't seem to be the issue.
It looks like something on the Optus line / NBN is blocking my VPN traffic. Any tips on how to troubleshoot this? I have logged with Optus who said it was an NBN fault and then NBN said it wasn't their fault without visiting. So 1 week in I am looking to pull the plug if I can't get this resolved.
Speedtest results below:
|Optus NBN via sagemcom router||No VPN||30||45.63||18.73||https://www.speedtest.net/result/8699831304|
|Optus NBN via sagemcom router||VPN enabled||55||9.87||0.11||https://www.speedtest.net/result/8699826875|
|Optus NBN direct to NBN box||No VPN||29||45.08||18.19||https://www.speedtest.net/result/8699376056|
|Optus NBN direct to NBN box||VPN enabled||40||4.45||0.1||https://www.speedtest.net/result/8699372529|
|Telstra Cable via Netgear router||No VPN||26||67.8||5.18||https://www.speedtest.net/result/8699852280|
|Telstra Cable via Netgear router||VPN enabled||24||37.98||4.88||https://www.speedtest.net/result/8699944274|
Appreciate any advice!
It's not uncommon for a VPN to degrade speeds to a certain degree, but not to the extent that your speed tests are showing.
I can't speak for the specific staff VPN client you're using at home, but in general- speeds shouldn't be throttled for customers using a VPN. I often work from home and I don't experience any noticeable issues when connected to my VPN at home on the Optus FTTP NBN Network.
If we raise a ticket with NBN, they'll perform a remote diagnostic from their end. If they're able to see two-way data flow and the speeds are in line with what we'd expect, they'll close your ticket and it's to us to troubleshoot the issue.
They'll only send out a technician if the results of their tests indicate that there's an issue on the NBN network. Do you have the Optus fault reference number? I can check if there's been progress on our side.
Yes I have tried that already. Speed test results don't really change whether I am going via the sagemcom router or directly to the nbn box via Ethernet cable.
Had Optus technician visit today. Saw the same slow speeds when on the VPN. Saw the expected speeds when off the VPN and also when connected to the VPN either via Telstra Cable or 4G via phone hotspot.
Spoke to supervisors and other techs and said there was nothing they could do.
So looks like I'll be starting the process of backing out of my Optus 2 year plan after 10 days and go back to Telstra Cable for as long as it is active.
Surely there are others out there using Optus NBN via HFC and connecting to VPNs? I work for a large Australian company (10,000+ staff) and we use Cisco VPN client.