x11vnc- TLS Handshake failed

I'm trying to connect x11vnc server through VncViewer (TigerVnc). I'm
giving following command to start vnc server with -ssl option

$ x11vnc -ssl -rfbauth /home/root/.vnc/passwd

When I'm trying to connect the vnc server, I'm getting TLS handshake
failed error.

Following is the vncserver log

07/05/2020 13:25:58 SSL: accept_openssl(OPENSSL_VNC)
07/05/2020 13:25:58 SSL: spawning helper process to handle: 172.21.33.47:64181
07/05/2020 13:25:58 SSL: helper for peerport 64181 is pid 629:
07/05/2020 13:25:58 connect_tcp: trying:   127.0.0.1 20000
07/05/2020 13:25:59 check_vnc_tls_mode: waited: 1.422183 / 1.40 input:
(future) RFB Handshake
07/05/2020 13:26:00 check_vnc_tls_mode: version: 3.8
07/05/2020 13:26:00 check_vnc_tls_mode: reply: 19 (VeNCrypt)
07/05/2020 13:26:00 vencrypt: received 0.2 client version.
07/05/2020 13:26:00 vencrypt: client selected sub-type: 257 (rfbVencryptTlsNone)
07/05/2020 13:26:00 Using Anonymous Diffie-Hellman mode.
07/05/2020 13:26:00 WARNING: Anonymous Diffie-Hellman uses encryption but is
07/05/2020 13:26:00 WARNING: susceptible to a Man-In-The-Middle attack.
07/05/2020 13:26:00 loaded Diffie Hellman 1024 bits, 0.001s
07/05/2020 13:26:00 SSL: ssl_init[629]: 6/6 initialization timeout: 20 secs.
07/05/2020 13:26:01 SSL: ssl_helper[629]: SSL_accept() *FATAL: -1 SSL FAILED
07/05/2020 13:26:01 SSL: error:1417A0C1:SSL
routines:tls_post_process_client_hello:no shared cipher
07/05/2020 13:26:01 SSL: ssl_helper[629]: Proto: unknown
07/05/2020 13:26:01 SSL: accept_openssl: cookie from ssl_helper[629] FAILED.

Wondering what is the reason for failure. Any help is appreciable.

Thanks & Regards,
Vishnu Motghare


___________________________________________________________
TightVNC mailing list, [email protected]
To change your subscription or to UNSUBSCRIBE, please visit
https://lists.sourceforge.net/lists/listinfo/vnc-tight-list