3.2.7. Enabling STARTTLS

Zorp supports the STARTTLS method for encrypting connections. STARTTLS support can be configured separately for the client- and server side. Currently, the following proxies support STARTTLS: Ftp proxy (to start FTPS sessions), Smtp proxy, and Pop3 proxy.

STARTTLS is enabled by default in the following encryption scenarios:

Example 3.3. Configuring FTPS support

This example is a standard FtpProxy with FTPS support enabled.

class FtpsProxy(FtpProxy):
    def config(self):
        FtpProxy.config(self)
        self.max_password_length=64

    EncryptionPolicy(name="ForwardSTARTTLS", encryption=ForwardStartTLSEncryption(client_verify=ClientCertificateVerifier(), client_ssl_options=ClientSSLOptions(), server_verify=ServerCertificateVerifier(), server_ssl_options=ServerSSLOptions(), client_certificate_generator=DynamicCertificate(private_key=PrivateKey.fromFile(key_file_path="/etc/key.d/ZMS_Engine/key.pem"), trusted_ca=Certificate.fromFile(certificate_file_path="/etc/ca.d/certs/my-trusted-ca-cert.pem", private_key=PrivateKey.fromFile("/etc/ca.d/keys/my-trusted-ca-cert.pem")), untrusted_ca=Certificate.fromFile(certificate_file_path="/etc/ca.d/certs/my-untrusted-ca-cert.pem", private_key=PrivateKey.fromFile("/etc/ca.d/keys/my-untrusted-ca-cert.pem")))))

    def demo() :
        Service(name='demo/MyFTPSService', router=TransparentRouter(), chainer=ConnectChainer(), proxy_class=FtpsProxy, max_instances=0, max_sessions=0, keepalive=Z_KEEPALIVE_NONE, encryption_policy="ForwardSTARTTLS")

    Rule(rule_id=2,
    proto=6,
    service='demo/MyFTPSService'
    )
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