I'm testing SFTP server
in Windows 10 and .net core 2.2 with Rebex.FileServer(5.0.7357)
when client download big file
closed by client after "Initiating key re-exchange"
This is my server code
when I using scp
then change bind protocol Sftp to Shell
Rebex.Security.Cryptography.CryptoHelper.UseFipsAlgorithmsOnly = false;
FileServer = new FileServer();
FileServer.LogWriter = new Rebex.FileLogWriter("rebex.txt");
FileServer.LogWriter.Level = Rebex.LogLevel.Debug;
FileServer.Settings.ShellEncoding = System.Text.Encoding.UTF8;
FileServer.Bind(22, FileServerProtocol.Sftp);
SshPrivateKey privateKey = SshPrivateKey.Generate(SshHostKeyAlgorithm.RSA, 2048);
FileServer.Keys.Add(privateKey);
FileServer.Start();
it occurs scp and filezilla
I attach rebex logs with scp
2020-03-13 11:18:31.649 DEBUG ShellModule(1)[11] SSH: Opening file '/~/SW_DVD9_Win_Pro_10_1903.1_64BIT_Korean_Pro_Ent_EDU_N_MLF_X22-14075.ISO' (Open, Read): success.
2020-03-13 11:18:45.621 DEBUG FileServer(1)[5] SSH: Session 1: Performing algorithm negotiation and key exchange.
2020-03-13 11:18:45.626 DEBUG FileServer(1)[4] SSH: Session 1: Performing key exchange using curve25519-sha256 with rsa-sha2-512.
2020-03-13 11:18:45.638 DEBUG FileServer(1)[5] SSH: Session 1: Current encryptor is aes128-ctr/hmac-sha2-256.
2020-03-13 11:18:45.661 DEBUG FileServer(1)[4] SSH: Session 1: Current decryptor is aes128-ctr/hmac-sha2-256.
2020-03-13 11:18:45.663 DEBUG FileServer(1)[4] SSH: Session 1: Key exchange finished.
2020-03-13 11:18:45.665 INFO FileServer(1)[4] SSH: Session 1: Connection reset by peer.
2020-03-13 11:18:45.702 ERROR FileServer(1)[12] SSH: Session 1: Error while sending packet data: System.Net.Sockets.SocketException (10054): 현재 연결은 원격 호스트에 의해 강제로 끊겼습니다
at pxbh.blyc(pxcr ne)
2020-03-13 11:18:45.703 ERROR ShellModule(1)[12] Server: Session 1: Error: pxbj: Error while sending packet data.
and it is scp -v log
debug1: rekeying in progress
debug1: rekeying in progress
debug1: Server host key: ssh-rsa SHA256:LvUH9F1LwzYI26gvB54CE8/HlYzZT+0GzdXBIFTU5nY
debug1: set_newkeys: rekeying, input 1114554432 bytes 69659560 blocks, output 314064 bytes 19540 blocks
debug1: rekey after 4294967296 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: rekeying in progress
debug1: rekeying in progress
debug1: rekeying in progress
debug1: rekeying in progress
debug1: rekeying in progress
debug1: rekeying in progress
debug1: SSH2_MSG_NEWKEYS received
debug1: set_newkeys: rekeying, input 1114603744 bytes 69662642 blocks, output 314064 bytes 0 blocks
debug1: rekey after 4294967296 blocks
Bad packet length 2538355513.
ssh_dispatch_run_fatal: Connection to 192.168.32.47 port 22: message authentication code incorrect
lost connection
next rebex log with fileZilla
2020-03-13 11:34:35.781 DEBUG FileServer(1)[10] SSH: Session 3: Performing algorithm negotiation and key exchange.
2020-03-13 11:34:35.781 DEBUG FileServer(1)[10] SSH: Session 3: Performing key exchange using curve25519-sha256@libssh.org with ssh-rsa.
2020-03-13 11:34:35.785 DEBUG FileServer(1)[10] SSH: Session 3: Current encryptor is aes256-ctr/hmac-sha2-256.
2020-03-13 11:34:35.790 DEBUG FileServer(1)[10] SSH: Session 3: Current decryptor is aes256-ctr/hmac-sha2-256.
2020-03-13 11:34:35.790 DEBUG FileServer(1)[10] SSH: Session 3: Key exchange finished.
2020-03-13 11:34:35.830 DEBUG FileServer(1)[10] SSH: Session 3: Received SSH_MSG_CHANNEL_REQUEST: winadj@putty.projects.tartarus.org('').
2020-03-13 11:34:55.864 DEBUG FileServer(1)[10] SSH: Session 3: Performing algorithm negotiation and key exchange.
2020-03-13 11:34:55.864 DEBUG FileServer(1)[10] SSH: Session 3: Performing key exchange using curve25519-sha256@libssh.org with ssh-rsa.
2020-03-13 11:34:55.868 DEBUG FileServer(1)[10] SSH: Session 3: Current encryptor is aes256-ctr/hmac-sha2-256.
2020-03-13 11:34:55.872 DEBUG FileServer(1)[10] SSH: Session 3: Current decryptor is aes256-ctr/hmac-sha2-256.
2020-03-13 11:34:55.872 DEBUG FileServer(1)[10] SSH: Session 3: Key exchange finished.
2020-03-13 11:34:55.875 INFO FileServer(1)[10] SSH: Session 3: Connection reset by peer.
2020-03-13 11:34:55.936 ERROR FileServer(1)[5] SSH: Session 3: Error while sending packet data: System.Net.Sockets.SocketException (10054): 현재 연결은 원격 호스트에 의해 강제로 끊겼습니다
at pxbh.blyc(pxcr ne)
2020-03-13 11:34:55.937 ERROR SftpModule(1)[5] Server: Session 3: Error: pxbj: Error while sending packet data.
at pxbh.blyc(pxcr ne)
at pxaf.vdhi(Int32 agh, Byte[] agi, Int32 agj, Int32 agk)
at pxaf.vdhi(Byte[] agl, Int32 agm, Int32 agn)
at pwzi.wunb(ArraySegment`1 di, Action`1 dj)
at pwzm.rlyf(omyj gb)
at pwzm.rlxs(omyj fa, Int32 fb)
at pwzm.wund(omyj adf)
and fileZilla's log
(ignore korean message it just "trace", "error")
추적: Initiating key re-exchange (too much data received)
추적: Doing ECDH key exchange with curve Curve25519 and hash SHA-256 (unaccelerated)
추적: Initialised AES-256 SDCTR (AES-NI accelerated) outbound encryption
추적: Initialised HMAC-SHA-256 (unaccelerated) outbound MAC algorithm
추적: Initialised AES-256 SDCTR (AES-NI accelerated) inbound encryption
추적: Initialised HMAC-SHA-256 (unaccelerated) inbound MAC algorithm
추적: Initiating key re-exchange (too much data received)
추적: Doing ECDH key exchange with curve Curve25519 and hash SHA-256 (unaccelerated)
추적: Initialised AES-256 SDCTR (AES-NI accelerated) outbound encryption
추적: Initialised HMAC-SHA-256 (unaccelerated) outbound MAC algorithm
추적: Initialised AES-256 SDCTR (AES-NI accelerated) inbound encryption
추적: Initialised HMAC-SHA-256 (unaccelerated) inbound MAC algorithm
추적: Incoming packet was garbled on decryption
**오류: FATAL ERROR: Incoming packet was garbled on decryption**
추적: CSftpControlSocket::OnTerminate without error
추적: CControlSocket::DoClose(66)
추적: CControlSocket::ResetOperation(66)
추적: CSftpFileTransferOpData::Reset(66) in state 4
and use linux's sftp command
debug1: rekeying in progress
debug1: rekeying in progress
debug1: rekeying in progress
debug1: rekeying in progress
debug1: Server host key: ssh-rsa SHA256:scHTMIjQvKeAnem0xRyAv4fvggRqfb5gDGWEtaZ1eI4
debug1: set_newkeys: rekeying, input 1311704976 bytes 81981469 blocks, output 2339216 bytes 146112 blocks
debug1: rekey after 4294967296 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: set_newkeys: rekeying, input 1311704992 bytes 81981470 blocks, output 2339216 bytes 0 blocks
debug1: rekey after 4294967296 blocks
Bad packet length 3357880771.
ssh_dispatch_run_fatal: Connection to 192.168.32.47 port 22: message authentication code incorrect
Connection closed