topic Re: tFTPConnection_1 : Algorithm negotiation fail in Talend Studio

tFTPConnection_1 : Algorithm negotiation fail

Anonymous — Tue, 22 Dec 2015 18:08:58 GMT

Hello everyone,
Here is my problem : I had a job that worked very well and that would get me my files on a remote server. But since they changed their FTP for SFTP I have this error that appears.
"Exception in component tFTPConnection_1
com.jcraft.jsch.JSchException: Algorithm negotiation fail
    at com.jcraft.jsch.Session.receive_kexinit(Session.java:529)
    at com.jcraft.jsch.Session.connect(Session.java:291)
    at com.jcraft.jsch.Session.connect(Session.java:154)
    at projectname.import_ftp_acf_wc_ong_v1_0_1.import_FTP_ACF_WC_ONG_V1.tFTPConnection_1Process(import_FTP_ACF_WC_ONG_V1.java:1139)
    at projectname.import_ftp_acf_wc_ong_v1_0_1.import_FTP_ACF_WC_ONG_V1$3.run(import_FTP_ACF_WC_ONG_V1.java:9552)"
I can connect with WinSCP on the server so my IDs are good.
I am new at Talend, I have no idea how to remedy that.
Thank you for your help.
PS: Sorry for my poor english

Re: tFTPConnection_1 : Algorithm negotiation fail

Anonymous — Wed, 23 Dec 2015 08:41:53 GMT

Hi,
Have you checked out "SFTP support" on tFTPConnection component? There is no network issue on your end? Can you connect your changed remote server through other tools successfully without using talend tool?
Best regards
Sabrina

Re: tFTPConnection_1 : Algorithm negotiation fail

Anonymous — Wed, 23 Dec 2015 10:00:44 GMT

Hello,
Yes, the "SFTP support" is checked and i connect my changed remote server with Winscp to get my remote files manually.
Cordially

Re: tFTPConnection_1 : Algorithm negotiation fail

Anonymous — Thu, 24 Dec 2015 14:13:08 GMT

Hello,
Try to upgrade the library jsch.jar in TOS_DI-20141024_1545-V5.6.0\configuration\lib\java to the latest version(jsch-0.1.53.zip and rename it to jsch.jar) that you can get from jcraft.com/jsch/, restart talend and execute your job.
Regards,
Amine

Re: tFTPConnection_1 : Algorithm negotiation fail

_AnonymousUser — Fri, 10 Jun 2016 17:06:52 GMT

Hello, I'm facing the same issue
dase the tFTPconnection in talend support :
- KexAlgorithms diffie-hellman-group-exchange-sha256
- MACs hmac-sha2-512,hmac-sha2-256
- Ciphers aes256-ctr,aes192-ctr,aes128-ctr

and yep, "SFTP support" is selected.
i'm using private key with key Passphrase.

Thanks.

Re: tFTPConnection_1 : Algorithm negotiation fail

Anonymous — Mon, 06 Jan 2020 10:34:35 GMT

I had the same issue using TOS 6.1 to connect to a FTP with implicit TLS.

I had the sftp support checked.

Following this thread, I downloaded jsch-0.1.55, copied it into D:\Talend\TOS_DI-20151214_1327-V6.1.1\workspace\.Java\lib and renamed it jsch-0.1.51.jar. After restzrting the studio, same issue.

I then copied it to D:\Talend\TOS_DI-20151214_1327-V6.1.1\configuration\.m2\repository\org\talend\libraries\jsch-0.1.51\6.0.0-SNAPSHOT to replace the existing jsch-0.1.51-6.0.0-SNAPSHOT.jar

It now works after restarting the studio

Hope it helps !