Могу только в клиенте под iOS проверить. Вот такой лог, если есть возможность направить приблизительно куда копать, буду крайне благодарен.
[Nov 30, 2023, 12:34:57] START CONNECTION
[Nov 30, 2023, 12:34:57] ----- OpenVPN Start -----
OpenVPN core 3.8.3connect1 ios arm64 64-bit
[Nov 30, 2023, 12:34:57] OpenVPN core 3.8.3connect1 ios arm64 64-bit
[Nov 30, 2023, 12:34:57] Frame=512/2112/512 mssfix-ctrl=1250
[Nov 30, 2023, 12:34:57] NOTE: This configuration contains options that were not used:
[Nov 30, 2023, 12:34:57] Unsupported option (ignored)
[Nov 30, 2023, 12:34:57] 7 [resolv-retry] [infinite]
[Nov 30, 2023, 12:34:57] 8 [persist-key]
[Nov 30, 2023, 12:34:57] 9 [persist-tun]
[Nov 30, 2023, 12:34:57] EVENT: RESOLVE
[Nov 30, 2023, 12:34:57] Contacting 178.208.90.43:1194 via TCP
[Nov 30, 2023, 12:34:57] EVENT: WAIT
[Nov 30, 2023, 12:34:57] Connecting to [178.208.90.43]:1194 (178.208.90.43) via TCP
[Nov 30, 2023, 12:34:57] EVENT: CONNECTING
[Nov 30, 2023, 12:34:57] Tunnel Options:V4,dev-type tun,link-mtu 1559,tun-mtu 1500,proto TCPv4_CLIENT,cipher AES-128-CBC,auth SHA1,keysize 128,key-method 2,tls-client
[Nov 30, 2023, 12:34:57] Creds: UsernameEmpty/PasswordEmpty
[Nov 30, 2023, 12:34:57] Sending Peer Info:
IV_VER=3.8.3connect1
IV_PLAT=ios
IV_NCP=2
IV_TCPNL=1
IV_PROTO=990
IV_MTU=1600
IV_CIPHERS=AES-128-CBC:AES-192-CBC:AES-256-CBC:AES-128-GCM:AES-192-GCM:AES-256-GCM:CHACHA20-POLY1305
IV_AUTO_SESS=1
IV_GUI_VER=net.openvpn.connect.ios_3.4.1-5463
IV_SSO=webauth,openurl,crtext
[Nov 30, 2023, 12:34:57] VERIFY FAIL: depth=1, /CN=AntiZapret CA, signature: RSA-SHA256 [self-signed certificate in certificate chain]
[Nov 30, 2023, 12:34:57] Transport Error: OpenSSLContext::SSL::read_cleartext: BIO_read failed, cap=2640 status=-1: error:0A000086:SSL routines::certificate verify failed
[Nov 30, 2023, 12:34:57] EVENT: CERT_VERIFY_FAIL OpenSSLContext::SSL::read_cleartext: BIO_read failed, cap=2640 status=-1: error:0A000086:SSL routines::certificate verify failed [ERR]
[Nov 30, 2023, 12:34:57] EVENT: DISCONNECTED
[Nov 30, 2023, 12:34:57] EVENT: CORE_THREAD_DONE
[Nov 30, 2023, 12:34:58] EVENT: DISCONNECT_PENDING
[Nov 30, 2023, 12:34:58] Raw stats on disconnect:
BYTES_IN : 2531
BYTES_OUT : 349
PACKETS_IN : 3
PACKETS_OUT : 3
SSL_ERROR : 1
CERT_VERIFY_FAIL : 1
[Nov 30, 2023, 12:34:58] Performance stats on disconnect:
CPU usage (microseconds): 34556
Network bytes per CPU second: 83342
Tunnel bytes per CPU second: 0