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in Java FTP by (140 points)
  • It seems that here the firewall blocks the ACK for SSH
  • setting the sftp timeout to an lower value as the default SSH timeout (mostly set to 10) this is closing connection and works then
  • But when i set to 30 seconds, It doesnot work.
  • What or why sftp behaves like this for 10 seconds and 30 seconds configured.

1 Answer

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by (154k points)
I've never heard of a firewall blocking an SSH message. A debug log file might tell us more.