SSL Problems

Our company has set up an "AUTH SSL" server, running on port 21. I can log in with the client, but then I get a

536 unsupported protection level

error. The entire connection log is:

220 sslftp.centerpointenergy.com X2 WS_FTP Server 3.1.4 (2342878943)
AUTH TLS
234 SSL enabled and waiting for negotiation
Connected. Exchanging encryption keys...
Session Cipher: 128 bit RC4
TLS encrypted session established.
PBSZ 0
200 PBSZ=0
USER tmhftp
331 Password required
PASS (hidden)
230-user logged in
230-This site is for authorized use only. Any unauthorized, criminal or malicious activity will be prosecuted to the full extent of the law.
230 user logged in
SYST
215 UNIX
FEAT
211-Extensions supported
SIZE
MDTM
MLST size*;type*;perm*;create*;modify*;
LANG EN*
REST STREAM
TVFS
UTF8
AUTH SSL;TLS-P;
PBSZ
PROT C;P;
211 end
Detected Server Software: WS_FTP Server 3.x
SITE UTF8
200 UTF8 encoding forced.
PWD
257 "/tmhftp" is current directory
TYPE I
200 Type set to IMAGE.
PROT C
536 unsupported protection level
PROT C
536 unsupported protection level

I have played with all of the settings that I can find which look like they might help, but nothing.....

Anyone have ideas?

Hi, try change at settings, SSL the auth mode and the control connection mode to Private (TLS-P) and Private (Secure)

Didn't work... same problem

Do you have that site on favorites? if yes check that you have changed that as well, also post another log.

I am actually editing the favorites entry when I test, so that the configuration settings are retained. Here is the log:

220 sslftp.centerpointenergy.com X2 WS_FTP Server 3.1.4 (2600099114)
AUTH TLS
234 SSL enabled and waiting for negotiation
Connected. Exchanging encryption keys...
Session Cipher: 128 bit RC4
TLS encrypted session established.
PBSZ 0
200 PBSZ=0
USER tmhftp
331 Password required
PASS (hidden)
230-user logged in
230-This site is for authorized use only. Any unauthorized, criminal or malicious activity will be prosecuted to the full extent of the law.
230 user logged in
SYST
215 UNIX
FEAT
211-Extensions supported
SIZE
MDTM
MLST size*;type*;perm*;create*;modify*;
LANG EN*
REST STREAM
TVFS
UTF8
AUTH SSL;TLS-P;
PBSZ
PROT C;P;
211 end
Detected Server Software: WS_FTP Server 3.x
SITE UTF8
200 UTF8 encoding forced.
PWD
257 "/tmhftp" is current directory
TYPE I
200 Type set to IMAGE.
PROT C
536 unsupported protection level
PROT C
536 unsupported protection level