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Date:	Sat, 4 Dec 2021 18:30:45 +0300
From:	Andrey Repin <anrdaemon AT yandex DOT ru>
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To:	Mark Hansen <cygwin AT mehconsulting DOT com>, cygwin AT cygwin DOT com
Subject:	Re: sftp hangs when trying to connect to SFTP server
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Greetings, Mark Hansen!

> I'm not sure when this started, but I know for sure I was able to do this in the past.

> I'm running cygwin on Windows 10 and want to connect to an SFTP server using the 'sftp' command.

> Note that when I try to connect to the same SFTP server using a different client, File Zilla, it works.

It seems you are connection to an FTP(S) server, not SSH(SFTP) server.

> When I run sftp, it appears to hang. I've run it with -vvvv to get some
> debugging output and get the following:

> 1001 jdk16->> sftp -vvvv -P 2100 192.168.160.62
> OpenSSH_8.8p1, OpenSSL 1.1.1l  24 Aug 2021
> debug1: Reading configuration data /cygdrive/c/Users/mark.hansen/.ssh/config
> debug1: /cygdrive/c/Users/mark.hansen/.ssh/config line 1: Applying options for *
> debug1: Reading configuration data /etc/ssh_config
> debug1: /etc/ssh_config line 46: Applying options for *
> debug2: resolve_canonicalize: hostname 192.168.160.62 is address
> debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts' ->
> '/cygdrive/c/Users/mark.hansen/.ssh/known_hosts'
> debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts2' ->
> '/cygdrive/c/Users/mark.hansen/.ssh/known_hosts2'
> debug3: ssh_connect_direct: entering
> debug1: Connecting to 192.168.160.62 [192.168.160.62] port 2100.
> debug3: set_sock_tos: set socket 4 IP_TOS 0x48
> debug1: Connection established.
> debug1: identity file /cygdrive/c/Users/mark.hansen/.ssh/id_rsa type 0
> debug1: identity file /cygdrive/c/Users/mark.hansen/.ssh/id_rsa-cert type -1
> debug1: identity file /cygdrive/c/Users/mark.hansen/.ssh/id_dsa type -1
> debug1: identity file /cygdrive/c/Users/mark.hansen/.ssh/id_dsa-cert type -1
> debug1: identity file /cygdrive/c/Users/mark.hansen/.ssh/id_ecdsa type -1
> debug1: identity file /cygdrive/c/Users/mark.hansen/.ssh/id_ecdsa-cert type -1
> debug1: identity file /cygdrive/c/Users/mark.hansen/.ssh/id_ecdsa_sk type -1
> debug1: identity file /cygdrive/c/Users/mark.hansen/.ssh/id_ecdsa_sk-cert type -1
> debug1: identity file /cygdrive/c/Users/mark.hansen/.ssh/id_ed25519 type -1
> debug1: identity file /cygdrive/c/Users/mark.hansen/.ssh/id_ed25519-cert type -1
> debug1: identity file /cygdrive/c/Users/mark.hansen/.ssh/id_ed25519_sk type -1
> debug1: identity file /cygdrive/c/Users/mark.hansen/.ssh/id_ed25519_sk-cert type -1
> debug1: identity file /cygdrive/c/Users/mark.hansen/.ssh/id_xmss type -1
> debug1: identity file /cygdrive/c/Users/mark.hansen/.ssh/id_xmss-cert type -1
> debug1: Local version string SSH-2.0-OpenSSH_8.8
> debug1: kex_exchange_identification: banner line 0: 220 Welcome to AT FTP service
> debug1: kex_exchange_identification: banner line 1: 530 Please login with USER and PASS.

> ... after some time ...
> debug1: kex_exchange_identification: banner line 2: 421 Timeout.
> kex_exchange_identification: Connection closed by remote host
> Connection closed by 192.168.160.62 port 2100
> Connection closed

> Here is my local config file (.ssh/config):

> Host *
>      Protocol 2
>      ForwardX11Trusted yes
>      ForwardX11 yes

> Here is /etc/ssh_config:

> Host *
> ForwardX11 yes



> Yesterday, I upgraded to the latest cygwin packages and now the cygwin DLL is version 3.3.2

> I tried running the command with the login user name on the command line (user AT 192 DOT 168 DOT 160 DOT 62) and
> assuming it was just waiting for the password, I tried entering it, but the characters were
> just echoed to the terminal and the process continued to hang.

> Any idea what is causing this? What can I do to troubleshoot this further?

See above, connect to an actual SSH server.


-- 
With best regards,
Andrey Repin
Saturday, December 4, 2021 18:26:06

Sorry for my terrible english...


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