firewall-traversal

Peer-to-peer, secure, TCP/UDP port forwarding using HTTP(s) relay for NAT/firewall traversal

Random IPv6 - circumvents restrictive IP address-based filter and blocking rules

Punch firewall holes to connect TCP, SCTP and UDP between network peers

Data bridge between dedicated folders on 2 computers via Email

OPC UA Reverse Connect listener for PHP (Part 6 7.1.2.3). Lets a server behind NAT/firewall dial into your PHP process and hand the live socket off to opcua-client without a second TCP handshake. Extends php-opcua/opcua-client v4.4+.

Cisco Expressway — independent third-party profile of a public API surface, by API Evangelist. API definitions for Cisco Expressway, a session border controller and firewall traversal solution for Unified Communications that provides secure remote and mobile access for collaboration workloads including video, voice, content, and presence.