Diagnosing eBay Seller Hub Connection Resets
eBay Seller Hub uses a multi-CDN architecture (Akamai and Cloudflare) that implements TLS 1.3 with ECH for all seller-facing endpoints. When sellers access Seller Hub from macOS Safari, the ECH-enabled ClientHello can trigger resets from ISP gateways that perform SSL inspection or from corporate proxies that terminate and re-sign TLS certificates mid-session.
The issue is particularly prevalent among sellers using satellite internet services (Starlink, HughesNet) or regional ISPs in developing markets, where the ISP infrastructure does not support ECH decryption and responds to the encrypted ClientHello with a TCP RST.
The Role of Cloudflare’s TLS Edge in eBay’s Infrastructure
Cloudflare terminates TLS for eBay’s seller portal at its edge nodes, which support TLS 1.3 with ECH. The connection between Safari and Cloudflare is encrypted with ECH, preventing ISP inspection. However, the TCP RST is sent by the ISP gateway before the TLS handshake even reaches Cloudflare — the reset is triggered at the ISP level, not by eBay’s infrastructure.
Resolving eBay Seller Hub Connection Resets
Disabling SSL Inspection on Router or Firewall
If your network uses a corporate firewall or router with SSL inspection, disable this feature for eBay’s domains (ebay.com, sellerhub.ebay.com). Consult your router or firewall manufacturer’s documentation for the exact steps to configure SSL inspection exceptions. This allows ECH to pass through without interception, resolving the connection reset issue.
Using HTTP/2 Instead of HTTP/3
eBay’s Cloudflare configuration supports HTTP/2, which does not require ECH and uses a standard TLS 1.2 handshake. While less secure than HTTP/3 with ECH, HTTP/2 is fully compatible with legacy ISP gateways. Configure Safari to prefer HTTP/2 by installing an extension like “HTTP/2 and SPDY Indicator” or by using Chrome, which defaults to HTTP/2 on sites that support it.
Testing with Mobile Hotspot
Connect your Mac to a mobile hotspot (iPhone personal hotspot or dedicated LTE modem) and attempt to access eBay Seller Hub. If the portal loads successfully over mobile data, the issue is your primary ISP’s infrastructure — the mobile carrier’s network supports ECH, while your primary ISP does not. Use the mobile hotspot for seller hub access until your ISP upgrades their gateway infrastructure.
Call to Action
If ERR_CONNECTION_RESET persists across networks, use the webs.ninja network lab to verify whether eBay’s infrastructure is operational. Search “is the platform down right now” for eBay’s status page to confirm whether the issue is platform-side or local. The diagnostic tool provides a complete picture of the connection path, identifying whether the reset is coming from your ISP, a specific CDN edge node, or eBay’s origin servers.