Auth aka cluster #3786
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Auth aka cluster #3786
+652
−75
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Implement IPSec NAT Traversal according to: - 3GPP TS 33.203 Annex M: IPsec NAT traversal - 3GPP TS 24.229: IP multimedia call control protocol - RFC 3948: UDP Encapsulation of IPsec ESP Packets New features: - New module parameter 'nat_traversal' (default: 0/disabled) - Support for mod=UDP-enc-tun in Security-Client headers - UDP encapsulation for ESP packets when NAT-T mode is negotiated - Tunnel mode instead of transport mode for NAT-T SAs - New pseudo-variable field $ipsec(mode) to query the IPSec mode - Persistent storage/restoration of NAT-T mode in usrloc When nat_traversal=1, the module accepts Security-Client headers with mod=UDP-enc-tun and creates Security Associations with UDP encapsulation (ESPINUDP) in tunnel mode, allowing UEs behind NAT devices to establish IPSec tunnels with the P-CSCF.
This reverts commit 49bc814.
- Introduced clustering and multi-node support in the Auth_aka module. - Added `cachedb_url` parameter to enable synchronization of authentication vectors across OpenSIPS nodes. - Implemented CacheDB functions for storing, fetching, and removing authentication vectors. - Updated README and admin documentation to reflect new features and usage examples. - Modified existing functions to integrate CacheDB operations for cross-node authentication.
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