Zyxel USG 100 - can't access with latest browsers - unsupported protocol

Hockingp

I have an old USG 100 in production and when I try to sign in from Microsoft Edge I get an error.

Unsupported protocol

The client and server don't support a common SSL protocol version or cipher suite.

I think this might be a lack of support on the USG for TLS1.2.

What can be done??

mMontana

Use IE temporarely.

Than https://community.zyxel.com/en/discussion/comment/41995

Hockingp

mMontana said:

Use IE temporarely.

That's exactly what I'm using but was wondering if there were any firmware releases which addressed the problem.

Assuming the problem is lack of TLS1.2 support??

mMontana

https://community.zyxel.com/en/discussion/comment/35200

https://community.zyxel.com/en/discussion/comment/40907

Different devices, same generation and ZLD firmware (3.x). Scrub on the three topics i linked, you'll have some answers.

Zyxel_James

Thanks for @mMontana suggestion.
We have v3.30P9 (WK48) for Zywall/USG Series, this version supports TLS 1.2
https://community.zyxel.com/en/discussion/4247/zywall-usg-series-v3-30p9-wk48-firmware-released

James