id summary reporter owner description type status priority component resolution keywords cc component_version os os_version 5475 "Failed to connect to z/OS V1.8 using ""FTP over explicit TLS/SSL""" Sam "My client is WINXP SP3. My host is z/OS V1.8 with a FTPD running. Here is the log: Status: Connecting to 192.xxx.xx.xx:21... Status: Connection established, waiting for welcome message... Trace: CFtpControlSocket::OnReceive() Response: 220-FTPD1 IBM FTP CS V1R8 at PROD, 09:06:34 on 2010-07-20. Trace: CFtpControlSocket::OnReceive() Response: 220 Connection will close if idle for more than 5 minutes. Trace: CFtpControlSocket::SendNextCommand() Command: AUTH TLS Trace: CFtpControlSocket::OnReceive() Response: 234 Security environment established - ready for negotiation Status: Initializing TLS... Trace: CTlsSocket::Handshake() Trace: CTlsSocket::ContinueHandshake() Trace: CTlsSocket::OnSend() Trace: CTlsSocket::OnRead() Trace: CTlsSocket::ContinueHandshake() Trace: CTlsSocket::OnRead() Trace: CTlsSocket::ContinueHandshake() Trace: CTlsSocket::Failure(-12, 10053) Trace: GnuTLS alert 80: Internal error Error: GnuTLS error -12: A TLS fatal alert has been received. Trace: CRealControlSocket::OnClose(10053) Trace: CControlSocket::DoClose(64) Trace: CFtpControlSocket::ResetOperation(66) Trace: CControlSocket::ResetOperation(66) Error: Could not connect to server Trace: CFileZillaEnginePrivate::ResetOperation(66) Status: Waiting to retry... Trace: CControlSocket::DoClose(64) Trace: CControlSocket::DoClose(64) Status: Connecting to 192.xxx.xx.xx:21... Status: Connection established, waiting for welcome message... Trace: CFtpControlSocket::OnReceive() Response: 220-FTPD1 IBM FTP CS V1R8 at PROD, 09:06:39 on 2010-07-20. Trace: CFtpControlSocket::OnReceive() Response: 220 Connection will close if idle for more than 5 minutes. Trace: CFtpControlSocket::SendNextCommand() Command: AUTH TLS Trace: CFtpControlSocket::OnReceive() Response: 234 Security environment established - ready for negotiation Status: Initializing TLS... Trace: CTlsSocket::Handshake() Trace: CTlsSocket::ContinueHandshake() Trace: CTlsSocket::OnSend() Trace: CTlsSocket::OnRead() Trace: CTlsSocket::ContinueHandshake() Trace: CTlsSocket::OnRead() Trace: CTlsSocket::ContinueHandshake() Trace: CTlsSocket::Failure(-12, 10053) Trace: GnuTLS alert 80: Internal error Error: GnuTLS error -12: A TLS fatal alert has been received. Trace: CRealControlSocket::OnClose(10053) Trace: CControlSocket::DoClose(64) Trace: CFtpControlSocket::ResetOperation(66) Trace: CControlSocket::ResetOperation(66) Error: Could not connect to server Trace: CFileZillaEnginePrivate::ResetOperation(66) Here below is my z/OS's TLS setting in FTPSDATA, which is the config file for ftp server: TLSRFCLEVEL RFC4217 EXTENSIONS AUTH_TLS SECURE_PASSWORD OPTIONAL CIPHERSUITE SSL_NULL_MD5 CIPHERSUITE SSL_NULL_SHA CIPHERSUITE SSL_RC4_MD5_EX CIPHERSUITE SSL_RC4_MD5 CIPHERSUITE SSL_RC4_SHA CIPHERSUITE SSL_RC2_MD5_EX CIPHERSUITE SSL_DES_SHA CIPHERSUITE SSL_3DES_SHA CIPHERSUITE SSL_AES_128_SHA CIPHERSUITE SSL_AES_256_SHA KEYRING TCPSTC/TCPRING I have already applied the PTF for z/OS V1.8, UO00701. Please help. " Bug report closed high FileZilla Client fixed FTP over explicit TLS/SSL Other