Can uBlock Origin block WebRTC?

Do you loathe online banking as much as I do? Does your bank make online banking more cumbersome each week in the name of "combating fraud" and "staying compliant" with anti-money laundering and counter terrorist financing laws? Have you ever looked under online banking's hood? Here's an example from a bank that I use in Japan to pay for life necessities and to keep a roof over my head. When accessing my online banking with SBI Shinsei Bank (SBI新生銀行) I noticed the following Little Snitch1 popup: SBI Shinsei bank's log in screen connects to aa.online-metrix.net on 3478/UDP Open in new tab (full image size 30 KiB) Something in the background of the log in page tries to connect to aa.online-metrix.net on port 3478/TCP. IANA3 lists port 3478/TCP as follows:4 Session Traversal Utilities for NAT (STUN) port (RFC8489) TURN over TCP (RFC8656) STUN Behavior Discovery over TCP (RFC5780) This is what the log in screen2 looks like: Screenshot showing log in screen Open in new tab (full image size…