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Dreamweaver can no longer access my server via SFTP

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My site's server just changed its sshd configuration to remove insecure algorithms and Dreamweaver (v18.0 on a Mac with High Sierra 10.13) can no longer access it via SFTP. It does not support FTP. I have the list of my server's supported SSH Ciphers, Kex Algorithms and MACs.

How can I find out what ssh standards Dreamweaver supports? Is there a way (e.g., a config file) that I can update Dreamweaver to ensure it uses one of our supported crypto standards for SFTP?

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PreranCorrect answer

Legend

The team is aware of the limitation and is working towards updating the feature.You can share your feedback with the team using Adobe Dreamweaver CC: Feature Ideas

Meanwhile, I suggest using Filezilla.

Thanks,

Preran

K

Kratika Agarwal

Participating Frequently

Hi,

Dreamweaver 18.2 is live. It can be downloaded from creative cloud Desktop application.

It includes the SFTP connection issue fix, Please refer to release notes:

Release notes for the 2018 and 2017 releases of Dreamweaver

Thanks

Kratika Agarwal

Adobe Dreamweaver

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mahakk20912952

Adobe Employee

Hi,

We are happy to announce, the long awaited fix for SFTP connection issue has been addressed and is available in the latest pre-release drop. Please go the link Adobe Prerelease and install the latest build 11099.

Try connecting to SFTP server with this build. Looking forward to your feedback!

Regards,

Mahak Kudyar

Adobe Dreamweaver.

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K

kevinb96402020

Participating Frequently

I still don't have a fix for this problem. What's going on?? it's now mid May and still no update available.

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mahakk20912952

Adobe Employee

Hi kevinb96402020,

Apologies you had to wait!

We have a great news for you.

Dreamweaver 18.2 is live now and it has the SFTP fix.

Can you please download the latest build from Creative Cloud and give it a try.

Looking forward to hear from you.

Regards,

Mahak Kudyar

Adobe Dreamweaver

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mahakk20912952

Adobe Employee

Hi kevinb96402020,

Can you please tell us the hosting server provider that you are trying to connect to?

Also, if you could mention the list of ciphers, MACs and KexAlgorithms that the server supports- this will help us in debug the issue better?

Regards,

Mahak Kudyar

Adobe Dreamweaver

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K

kevinb96402020

Participating Frequently

From my host, although I have already reported this info previously.

It's a standard linux server. OpenSSH.

Here is the connection from your side:

Feb 2 09:30:41 100023bf0000 sshd[6426]: Unable to negotiate with xxx.xx.xx.xxx port 54843: no matching MAC found. Their offer: hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96 [preauth]

Here is what the server supports currently:

KexAlgorithms curve25519-sha256@libssh.org,diffie-hellman-group-exchange-sha256
Ciphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr
MACs hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-512,hmac-sha2-256,umac-128@openssh.com

Basically, dreamweaver is trying to connect to the server using very old ciphers that are basically no longer secure (and haven't been for some time).

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Niharika Jha

Adobe Employee

Hi,

Can you tell us to which hosting server are you trying to connect?

Also, if you could list down the whole list of ciphers, MACs and KexAlgorithms supported by your server- we could debug this issue better.

Regards,
Niharika Gupta
Adobe Dreamweaver

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BenPleysier

Community Expert

This may be of help Re: SFTP Broken in Dreamweaver 2017

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fininAuthor

Participant

Thanks. I had reviewed that and checked everything I could think of before finding out that out sysadmin had removed some less secure standards from our sshd configuration. So my working theory is that the problem is that Dreamweaver is using one that our server no longer supports. Hence my desire to find out what ciphers etc. Dreamweaver uses and if there there is a way to reconfigure it.

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PreranCorrect answer

Legend

The team is aware of the limitation and is working towards updating the feature.You can share your feedback with the team using Adobe Dreamweaver CC: Feature Ideas

Meanwhile, I suggest using Filezilla.

Thanks,

Preran

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