The SSH Tectia SOCKS Proxy component used in transparent tunneling does not use the regular client configuration ssh2_config. Instead, the configuration is read from the ssh-socks-proxy-config.xml file.
Like the ssh2_config file, the ssh-socks-proxy-config.xml file can be located in the system-wide /etc/ssh2 directory and/or in the user-specific $HOME/.ssh2 directory.
The SOCKS Proxy reads the user public keys and server host keys from the normal locations ($HOME/.ssh2 and $HOME/.ssh2/hostkeys). However, if the server authenticates itself using a certificate, the CA information must be defined seprately in the ssh-socks-proxy-config.xml file. The certificates must be stored in files. SAF certificates are currently not supported with the SOCKS Proxy.