Goal (short description)
Usage of SIP identity (RFC4474)
Applicability
User Agent A – TLS — > proxy domainA — Identity (TLS) — > proxy domainB — Identity (TLS,UDP,TCP) — > User Agent B
TLS and Identity doesn't work together yet, ther some intermodule conflict
Prerequisites
- Linux machine
- SER version 2.1 - Current cvs version
- Server certificate and private key in PEM fomrat
- CA list - list of trusted authorities in PEM format
- web server to allow others to download your certificate
Ser head cvs branch
export CVSROOT=:pserver:anonymous@cvs.berlios.de:/cvsroot/ser cvs co sip_router
*Compiling of source*
Make everything
make group_include="standard" include_modules="tls auth_identity" all
Install it (and make before)
make group_include="standard" include_modules="tls auth_identity" install
You can adjust compiled modules by group_include, include_modules and exclude_modules parameters.
Print-modules parameter show set of modules that will compiled.
make group_include="standard" include_modules="tls auth_identity" print-modules
It cvs version, if any other non-critical module make problmes, just remove him with exclude_modules="module_name1 module_name2"
Configuration 
Edit your ser.cfg
Load the module
# ------------------ module loading ---------------------------------- loadmodule "/usr/local/lib/ser/modules/auth_identity.so"
Set the parameters
# ----------------- setting module-specific parameters ---------------
modparam("auth_identity","privatekey_path","/etc/certs/key.pem")
modparam("auth_identity","certificate_path","/etc/certs/cert.pem")
modparam("auth_identity","cainfo_path","/etc/certs/ca_list.pem")
modparam("auth_identity","certificate_url","http://sip.domainA.net/cert.pem")