configurar serv-u con no-ip

[bvh_wrc]

1)-si activo el pasv mode me da este log:

[R] Connecting to xxxxxxxx.no-ip.biz -> DNS=xxxxxxxxxx.no-ip.biz IP=200.117.186.XX PORT=2321
[R] Connected to xxxxxxxxx.no-ip.biz
[R] 220 Serv-U FTP Server v6.4 for WinSock ready...
[R] USER xxxxxxxxx
[R] 331 User name okay, need password.
[R] PASS (hidden)
[R] 230 User logged in, proceed.
[R] SYST
[R] 215 UNIX Type: L8
[R] FEAT
[R] 211-Extension supported
[R] CLNT
[R] MDTM
[R] MDTM YYYYMMDDHHMMSS[+-TZ];filename
[R] SIZE
[R] SITE PSWD;EXEC;SET;INDEX;ZONE;CHMOD;MSG
[R] REST STREAM
[R] XCRC filename;start;end
[R] MODE Z
[R] MLST Type*;Size*;Create;Modify*;Win32.ea*;
[R] 211 End
[R] CLNT FlashFXP 3.4.0.1145
[R] 200 Noted.
[R] PWD
[R] 257 "/" is current directory.
[R] TYPE A
[R] 200 Type set to A.
[R] MODE Z
[R] 200 MODE Z ok.
[R] PASV
[R] 227 Entering Passive Mode (200,117,186,XX,7,160)
[R] Opening data connection IP: 200.117.186.XX PORT: 1952
[R] Data Socket Error: Connection timed out
[R] List Error
[R] PASV
[R] 227 Entering Passive Mode (200,117,186,XX,7,163)
[R] Opening data connection IP: 200.117.186.XX PORT: 1955
[R] Data Socket Error: Connection timed out
[R] List Error
[R] PASV mode failed, trying PORT mode.
[R] Listening on PORT: 1345, Waiting for connection.
[R] PORT 10,0,0,5,5,65
[R] 200 PORT Command successful.
[R] LIST -al
[R] 150 Opening ASCII mode data connection for /bin/ls.
[R] 426 Data connection closed, transfer aborted.
[R] List Error

2)- si desactibo el pasv mode me da este log:

[R] Connecting to xxxxxxx.no-ip.biz -> DNS=xxxxxxxxx.no-ip.biz IP=200.117.186.XX PORT=2321
[R] Connected to xxxxxxxx.no-ip.biz
[R] 220 Serv-U FTP Server v6.4 for WinSock ready...
[R] USER xxxxxxxx
[R] 331 User name okay, need password.
[R] PASS (hidden)
[R] 230 User logged in, proceed.
[R] SYST
[R] 215 UNIX Type: L8
[R] FEAT
[R] 211-Extension supported
[R] CLNT
[R] MDTM
[R] MDTM YYYYMMDDHHMMSS[+-TZ];filename
[R] SIZE
[R] SITE PSWD;EXEC;SET;INDEX;ZONE;CHMOD;MSG
[R] REST STREAM
[R] XCRC filename;start;end
[R] MODE Z
[R] MLST Type*;Size*;Create;Modify*;Win32.ea*;
[R] 211 End
[R] CLNT FlashFXP 3.4.0.1145
[R] 200 Noted.
[R] PWD
[R] 257 "/" is current directory.
[R] TYPE A
[R] 200 Type set to A.
[R] MODE Z
[R] 200 MODE Z ok.
[R] Listening on PORT: 1347, Waiting for connection.
[R] PORT 10,0,0,5,5,67
[R] 200 PORT Command successful.
[R] LIST -al
[R] 150 Opening ASCII mode data connection for /bin/ls.
[R] 426 Data connection closed, transfer aborted.
[R] List Error

en todas las pruebas, tengo en las dos maquinas desactivadas el firewall por las dudas y los puertos 2321 estan abiertos tanto en el router del pc servidor como en el router del cliente. por ultimo me queda decirles que hice un ping desde la pc cliente al dominio que me dio no-ip.com (xxxxxxxxx.no-ip.biz) y me responde perfectamente, asique quiere decir que el no-ip me anda bien.
mañana les voy a pegar el log que me larga el serv-u cuando me intento conectar desde el clioente. pero les anticipo que ne el log del serv-u aparece como conected pero a los 10 segundos, dice closing conection (conection lost). estuve leyendo sobre ese error en este foro ya que una vez se posteo algo asi aca pero lei todo el post y no le dieron una solucion.
bueno espero que alguien que sepa me ayude.
nos vemos y por favor contesten!!!!!