Comments (3)
Your server only supports TLSv1 with ancient and insecure 3DES cipher. (The IP address was easily visible in the original screenshot and you can use https://github.com/drwetter/testssl.sh to test it.)
$ ./testssl.sh A.B.C.D
…
Testing protocols via sockets except NPN+ALPN
SSLv2 not offered (OK)
SSLv3 offered (NOT ok)
TLS 1 offered (deprecated)
TLS 1.1 not offered
TLS 1.2 not offered and downgraded to a weaker protocol
TLS 1.3 not offered and downgraded to a weaker protocol
NPN/SPDY not offered
ALPN/HTTP2 not offered
Testing cipher categories
NULL ciphers (no encryption) not offered (OK)
Anonymous NULL Ciphers (no authentication) not offered (OK)
Export ciphers (w/o ADH+NULL) not offered (OK)
LOW: 64 Bit + DES, RC[2,4], MD5 (w/o export) not offered (OK)
Triple DES Ciphers / IDEA offered
Obsoleted CBC ciphers (AES, ARIA etc.) not offered
Strong encryption (AEAD ciphers) with no FS not offered
Forward Secrecy strong encryption (AEAD ciphers) not offered
Testing server's cipher preferences
Has server cipher order? yes (OK)
Negotiated protocol TLSv1
Negotiated cipher DES-CBC3-SHA
Cipher per protocol
Hexcode Cipher Suite Name (OpenSSL) KeyExch. Encryption Bits Cipher Suite Name (IANA/RFC)
-----------------------------------------------------------------------------------------------------------------------------
SSLv2
-
SSLv3 (server order)
x0a DES-CBC3-SHA RSA 3DES 168 TLS_RSA_WITH_3DES_EDE_CBC_SHA
TLSv1 (server order)
x0a DES-CBC3-SHA RSA 3DES 168 TLS_RSA_WITH_3DES_EDE_CBC_SHA
TLSv1.1
-
TLSv1.2
-
TLSv1.3
-
I can use openconnect PC client (openconnect gui VPN client) 1.5.3 (32bit) to connect.
It's basically an accident that some older versions of OpenConnect support these servers, if built with the right GnuTLS or OpenSSL library.
I very recently added explicit support for these ancient servers with insecure crypto in OpenConnect !114. In order to reliably support these in ics-openconnect, we'll need to update to a very version of libopenconnect5 (and add an "Allow insecure crypto" checkbox in the config).
I'll probably get to it eventually, but don't hold your breath… building and testing the Android client is kind of a pain. 🤕
from ics-openconnect.
@dlenski thanks for your response and ssl query :-D.
can I know if 1.14 android app has that capability? for my app version is 1.15, can I understand I should have that parameter? how i can enable it and try to connect?
i download it from https://play.google.com/store/apps/details?id=com.github.digitalsoftwaresolutions.openconnect&hl=zh&gl=US
Actually, when I used another mobile that connects that server successfully before, I also get a failed result. That is confusing me and confirm with the VPN maintainer if there has changed recently, the answer is not. :-(
from ics-openconnect.
No released version of the Android app will reliably support these ancient servers. These servers require specific support in the OpenConnect library that wasn't added until long after the Android app was developed.
You'd need to rebuild from source to test, and enable the "insecure crypto" flag in the library.
That is confusing me and confirm with the VPN maintainer if there has changed recently, the answer is not. :-(
Traffic through this VPN should generally not be considered secure because of the ancient cryptographic algorithms that it uses.
from ics-openconnect.
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