all，
在我的MS2012服务器中安装了Comodo的新证书后，我的RHEL6服务器的FTPS连接失败了" Gnutls_handshake"错误。我们从签名的Verisign搬到Comodo。我浏览了不同的"集合"命令，但仍然无法成功连接。你能帮忙吗？谢谢一堆..
lx1234$ lftp
lftp :~> open -u uname ftps://server
Password:
lftp uname@server:~> set ftps:initial-prot ""
lftp uname@server:~> set ftp:ssl-force true
lftp uname@server:~> set ftp:ssl-protect-data true
lftp uname@server:~> set ssl:verify-certificate "yes"
lftp uname@server:~>debug 99999999
ls
FileCopy(0x15c4e80) enters state INITIAL
FileCopy(0x15c4e80) enters state DO_COPY
---- dns cache hit
---- Connecting to server port 990
GNUTLS: HSK[0x19c5d40]: Keeping ciphersuite: DHE_RSA_AES_128_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Keeping ciphersuite: DHE_RSA_CAMELLIA_128_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Keeping ciphersuite: DHE_RSA_AES_256_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Keeping ciphersuite: DHE_RSA_CAMELLIA_256_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Keeping ciphersuite: DHE_RSA_3DES_EDE_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Keeping ciphersuite: DHE_DSS_AES_128_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Keeping ciphersuite: DHE_DSS_CAMELLIA_128_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Keeping ciphersuite: DHE_DSS_AES_256_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Keeping ciphersuite: DHE_DSS_CAMELLIA_256_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Keeping ciphersuite: DHE_DSS_3DES_EDE_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Keeping ciphersuite: DHE_DSS_ARCFOUR_SHA1
GNUTLS: HSK[0x19c5d40]: Removing ciphersuite: DHE_PSK_SHA_AES_128_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Removing ciphersuite: DHE_PSK_SHA_AES_256_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Removing ciphersuite: DHE_PSK_SHA_3DES_EDE_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Removing ciphersuite: DHE_PSK_SHA_ARCFOUR_SHA1
GNUTLS: HSK[0x19c5d40]: Removing ciphersuite: SRP_SHA_RSA_AES_128_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Removing ciphersuite: SRP_SHA_RSA_AES_256_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Removing ciphersuite: SRP_SHA_RSA_3DES_EDE_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Removing ciphersuite: SRP_SHA_DSS_AES_128_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Removing ciphersuite: SRP_SHA_DSS_AES_256_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Removing ciphersuite: SRP_SHA_DSS_3DES_EDE_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Keeping ciphersuite: RSA_AES_128_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Keeping ciphersuite: RSA_CAMELLIA_128_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Keeping ciphersuite: RSA_AES_256_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Keeping ciphersuite: RSA_CAMELLIA_256_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Keeping ciphersuite: RSA_3DES_EDE_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Keeping ciphersuite: RSA_ARCFOUR_SHA1
GNUTLS: HSK[0x19c5d40]: Keeping ciphersuite: RSA_ARCFOUR_MD5
GNUTLS: HSK[0x19c5d40]: Removing ciphersuite: PSK_SHA_AES_128_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Removing ciphersuite: PSK_SHA_AES_256_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Removing ciphersuite: PSK_SHA_3DES_EDE_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Removing ciphersuite: PSK_SHA_ARCFOUR_SHA1
GNUTLS: HSK[0x19c5d40]: Removing ciphersuite: SRP_SHA_AES_128_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Removing ciphersuite: SRP_SHA_AES_256_CBC_SHA1
GNUTLS: HSK[0x19c5d40]: Removing ciphersuite: SRP_SHA_3DES_EDE_CBC_SHA1
GNUTLS: EXT[0x19c5d40]: Sending extension CERT_TYPE
GNUTLS: EXT[0x19c5d40]: Sending extension SAFE_RENEGOTIATION
GNUTLS: HSK[0x19c5d40]: CLIENT HELLO was sent [93 bytes]
GNUTLS: REC[0x19c5d40]: Sending Packet[0] Handshake(22) with length: 93
GNUTLS: REC[0x19c5d40]: Sent Packet[1] Handshake(22) with length: 98
GNUTLS: ASSERT: gnutls_buffers.c:599
GNUTLS: XXX[]: ret: 0 Success.
GNUTLS: XXX2[]: ret: 0 Success.
GNUTLS: ASSERT: gnutls_record.c:921
GNUTLS: ASSERT: gnutls_buffers.c:1032
GNUTLS: ASSERT: gnutls_handshake.c:2700
**** gnutls_handshake: A TLS packet with unexpected length was received.
---- Closing control socket
ls: Fatal error: gnutls_handshake: A TLS packet with unexpected length was
received.
很可能您已经设置了FTP服务器，因此连接是纯文本。
尝试与ftp://连接：
$ lftp
lftp :~> open -u uname ftp://server
lftp uname@server:~> set ftp:ssl-force yes
lftp uname@server:~> ls