Exchange BACKUPSET - using SFTP / FTP (#10499, #10506)

Discuss any issues related to SFTP here.

Exchange BACKUPSET - using SFTP / FTP (#10499, #10506)

Postby steveyg_uk » Tue Nov 18, 2014 9:14 pm

Hi,

When creating a new backup set for Exchange (2010), I select SFTP as backup destination. Enter my credentials and get a popup saying;-

Failed to access destination "SFTP". Reason="Alorithm negotiation fail"

Please help. Currently trailing the software, if the above is fixed I'll be looking to purchase for 3 different sites.
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Re: Exchange BACKUPSET - using SFTP

Postby rafael » Wed Nov 19, 2014 1:09 pm

Hello,

Thank you for your interest in CloudBacko.

The "SFTP". Reason="Algorithm negotiation fail" error is actually returned by the SFTP server when CloudBacko Pro tried to connect. It may related to a cipher setup/configuration issue on your SFTP server.

Can you tell us what type of ciphers are enabled on your SFTP server, i.e. AES-256, Twofish , Triple DES (3DES) etc?
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Re: Exchange BACKUPSET - using SFTP

Postby steveyg_uk » Wed Nov 19, 2014 3:46 pm

I am using Synology Ds213+ box using DSM Manager 5.1 OS.

I have simply enabled SFTP protocol on port 7002 with nothing else set. It works when using BACKUP4ALL by just specifying SFTP.

Please can you help.
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Re: Exchange BACKUPSET - using SFTP

Postby rafael » Wed Nov 19, 2014 4:46 pm

Hello,

Thank you for updating us on your SFTP server setup.

CloudBacko Pro/Lite by default uses AES 128 cipher for negotiating connections to a SFTP server. Can you check if AES 128 cipher is installed or enabled on your SFTP server?

If you are not able to install or enable AES 128 ciphers on the device, another option is to use FTP service. As the CloudBacko Pro encrypts all backup data by default using a AES 256bit random key so you data is still secure.
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Re: Exchange BACKUPSET - using SFTP

Postby steveyg_uk » Wed Nov 19, 2014 4:48 pm

Oh I see. There isn't a key defined for SFTP.

If I enable FTP - I'll have to enable AES 128 bit cipher - is that correct?
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Re: Exchange BACKUPSET - using SFTP

Postby rafael » Wed Nov 19, 2014 6:12 pm

Hello,

If you setup your Synology DS213+ box as a FTP server instead and CloudBacko connects to the Synology DS213+ box using FTP protocol, this will resolve the "Algorithm negotiation fail" error. As FTP protocol does not require AES 128 ciphers.
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Re: Exchange BACKUPSET - using SFTP

Postby steveyg_uk » Wed Nov 19, 2014 10:09 pm

I have enabled non secure FTP.

Tested using BACKUP4ALL - works fine.

Tested using your software - just get a pop up window with a red 'x'.

Tested using a Command Prompt FTP connection - works fine.

Please help. getting a little a fed up with what looks like great software, but simple connection tasks taking nearly a day of my time so far.
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Re: Exchange BACKUPSET - using SFTP

Postby steveyg_uk » Wed Nov 19, 2014 11:15 pm

Latest update.........

I've now changed from SYNOLOGY to NETGEAR READYNAS same fault.

Rebooted Server that has the CLOUDBACKO connection.

Now when trying to connect using FTP - window just greys out.........

Arghhh please help.
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Re: Exchange BACKUPSET - using SFTP

Postby rafael » Thu Nov 20, 2014 12:14 pm

Hello,

You mentioned "BACKUP4ALL" can connect to your FTP server but CloudBacko cannot. Are you using the same login credentials in both cases?

Can you check on the firewall settings of CloudBacko machine and verify on the firewall settings if Java is allowed to access your FTP ports/IP addresses? As CloudBacko Pro/Lite is run on top of Java.

Do you mind posting the screenshots of all the errors you encountered when connecting to your FTP server? This will give us a better understanding of the problem.
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Re: Exchange BACKUPSET - using SFTP

Postby steveyg_uk » Thu Nov 20, 2014 3:47 pm

Thank you. I will be more than happy to provide screenshots. However, I would like to try and work on allowing JAVA through the firewall.

I have a BILLION 8800NL. I'll have a look and see how I do that and get back to you.
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Re: Exchange BACKUPSET - using SFTP

Postby steveyg_uk » Thu Nov 20, 2014 4:32 pm

I've checked the firewall and it isn't blocking JAVA. JAVA blocking would be blocked if URL Filtering was enabled; which it isn't.

Secondly, both NETGEAR READYNAS and SYNOLOGY do not have any kind of JAVA APPLET running. Would this be needed for your backup system to work? I suspect the answer is no......as If I configure any of my 3 customer sites (using your 30 day trail software) to connect my hosting FTP server - it connects fine and there isn't any java on that.

I can't supply any error messages, as you advised to use just plain FTP. When I use this and click TEST - it says connecting..........and will sit there for hours.
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Re: Exchange BACKUPSET - using SFTP

Postby rafael » Thu Nov 20, 2014 4:59 pm

Hello,

Q: Secondly, both NETGEAR READYNAS and SYNOLOGY do not have any kind of JAVA APPLET running. Would this be needed for your backup system to work?

You are correct, the NAS devices do not need any kind of JAVA APPLET running for CloudBacko to connect to it.

Have you tried selecting the "Connect with SSL" feature?

FTP_config.PNG
FTP_config.PNG (35.03 KiB) Viewed 14821 times
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Re: Exchange BACKUPSET - using SFTP

Postby steveyg_uk » Thu Nov 20, 2014 6:08 pm

Thought we had it there......

Enabled SSL for FTP.

TEST from remote customer site.....shows SYNOLOGY Certificate. Click YES......then another CLOUDBACKO internal window flashes up with a RED CROSS and no writing.

Looks like we are nearly there ??
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Re: Exchange BACKUPSET - using SFTP

Postby rafael » Thu Nov 20, 2014 6:42 pm

Hello,

From the latest test results we suspect it may be related to a permissions issue. Does the FTP login account you use have write permissions to the root folder?

As by default CloudBacko saves backup files under ~/CloudBacko (where ~ is the home directory of the login account). Please make sure that you have write access permission to this directory.

Alternatively, you can specify your preferred directory for storing the backup files (a shared folder with read/write permission for everyone) in the option settings on CloudBacko.
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Re: Exchange BACKUPSET - using SFTP

Postby steveyg_uk » Thu Nov 20, 2014 7:08 pm

Your system does it use SSL Implicit or Explicit.
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Re: Exchange BACKUPSET - using SFTP

Postby steveyg_uk » Thu Nov 20, 2014 8:41 pm

Also ontop of the SSL question.............. how should I write the FTP folder?

\xyz
/xyz
xyz
~\xyz

and so forth
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Re: Exchange BACKUPSET - using SFTP

Postby CloudBacko » Fri Nov 21, 2014 11:38 am

I believe rafael is correct. You have run into the problem that the user specified doesn't have access to ~/CloudBacko. What complicating the matter is that "~" on NAS device sometimes doesn't refer to the home directory of the user (i.e. admin in your case) but refers to "/" instead. Usually on NAS devices, /CloudBacko refers to a read-only partition. I would recommend you specify a full path to a writable, e.g. /home/admin, instead in the "(option) FTP Directory to store backup data)" field provided.

For your information, CloudBacko uses FTP SSL explicit.

If this doesn't work, please open up the FTP port for us to try and send me the credentials via private message. I will check what is wrong for you.
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Re: Exchange BACKUPSET - using SFTP

Postby steveyg_uk » Fri Nov 21, 2014 4:01 pm

Thank you for your email. I've tried to PM says I am not authorised to do so?
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Re: Exchange BACKUPSET - using SFTP

Postby rafael » Fri Nov 21, 2014 4:24 pm

Hello,

You PM feature is enabled.

I have sent you a PM, you can reply directly to the PM.
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Re: Exchange BACKUPSET - using SFTP

Postby steveyg_uk » Fri Nov 21, 2014 4:29 pm

I've just tested whilst waiting to PM you.... FILEZILLA from all 3 customer sites.

It connects fine to the specified sub folder.

using \<foldername>

I just don't understand why I am having so many issues with your software.
:?
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Re: Exchange BACKUPSET - using SFTP

Postby steveyg_uk » Fri Nov 21, 2014 4:40 pm

I've replied via PM.

Thank you.
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Re: Exchange BACKUPSET - using SFTP

Postby rafael » Fri Nov 21, 2014 4:48 pm

Hello,

Thanks we have performed a quick test it is related to the setup with your FTP server.

Please enable passive transfer mode on your FTP server this should resolve the problem.

We apologize for inconvenience caused.

I will pass on the details to our developers to improve the error message handling for FTP/SFTP connections.
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Re: Exchange BACKUPSET - using SFTP

Postby CloudBacko » Fri Nov 21, 2014 5:18 pm

According to RFC 959 ( https://www.ietf.org/rfc/rfc959.txt ), when a FTP client sends a PASV command to FTP server, the FTP server should reply with "227 Entering Passive Mode. ....." but this is not the case here (your FTP server replies "500 PASV : command not understood.") .

Which FTP server software are you using ? We recommend FileZilla Server for Windows and proftpd for Linux because these are the platforms on which we have tested extensively.
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Re: Exchange BACKUPSET - using SFTP

Postby steveyg_uk » Fri Nov 21, 2014 5:18 pm

Passive mode works from File Zilla when removing port 21.

Your software doesn't like it when I remove port 21 states a port must be defined. So what should I put?
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Re: Exchange BACKUPSET - using SFTP

Postby steveyg_uk » Fri Nov 21, 2014 5:21 pm

CloudBacko wrote:According to RFC 959 ( https://www.ietf.org/rfc/rfc959.txt ), when a FTP client sends a PASV command to FTP server, the FTP server should reply with "227 Entering Passive Mode. ....." but this is not the case here (your FTP server replies "500 PASV : command not understood.") .

Which FTP server software are you using ? We recommend FileZilla Server for Windows and proftpd for Linux because these are the platforms on which we have tested extensively.


Orginally passive mode wasn't working as it wasn't responding with EXNTERNAL IP it was responding with internal IP. This has been resolved.

Please can you try and connect again externally.
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Re: Exchange BACKUPSET - using SFTP

Postby CloudBacko » Fri Nov 21, 2014 5:23 pm

I would also like to revisit the SFTP issue if you are interested in getting this resolved. After googling a bit, I can see there are some other people running into the same problem too. If you have let me access your SFTP device, I think I can get this resolved. (Sorry, we don't have any synology NAS here but I did do some tests on Netgear ReadyRAS Pro, everything went fine with SFTP setup under the root user.
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Re: Exchange BACKUPSET - using SFTP

Postby steveyg_uk » Fri Nov 21, 2014 5:27 pm

CloudBacko wrote:I would also like to revisit the SFTP issue if you are interested in getting this resolved. After googling a bit, I can see there are some other people running into the same problem too. If you have let me access your SFTP device, I think I can get this resolved. (Sorry, we don't have any synology NAS here but I did do some tests on Netgear ReadyRAS Pro, everything went fine with SFTP setup under the root user.


Will do, if we could focus on one connection at a time please.

I noticed PASSIVE wasn't working when connecting via FILEZILLA. This has been resolved. See my comment above.

Could you try and connect again.
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Re: Exchange BACKUPSET - using SFTP

Postby CloudBacko » Fri Nov 21, 2014 7:04 pm

I have bypassed the checking the PASV mode. Please do the following to patch the software:

1. Make sure that you have CloudBacko 1.7.0.0 running
2. Stop "CloudBacko Pro Services" from Windows Services and close CloudBacko GUI if running
3. Download https://s3.amazonaws.com/CloudBacko/unofficial/cb.jar and save it in C:\Program Files\CloudBacko Pro\bin (overwrite existing file)
4. Start "CloudBacko Pro Services" from Windows Services
5. Open CloudBacko GUI and try again

I have set the FTP location to be /nightlayer-ftp with SSL disabled. If I enable SSL, the test fails. I need more time to see what is wrong.

I have also added a few parameters to the SFTP configuration which might help solve the problem you have run into. Feel free to try.
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Re: Exchange BACKUPSET - using SFTP

Postby steveyg_uk » Fri Nov 21, 2014 7:20 pm

Thank you very helpful.

It works !! ONLY (as you say) using PLAIN FTP.

SSL doesn't work.
SFTP doesn't work.

So what now? Has Cloudbacko been tested against SYNOLOGY boxes? I can't be the only SYNOLOGY user with this problem - surely?
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Re: Exchange BACKUPSET - using SFTP

Postby CloudBacko » Fri Nov 21, 2014 10:50 pm

You are right. We haven't tested Cloudbacko with SYNOLOGY but we have tested it against QNAP, Thecus and Netgear NAS.

I think there is something wrong with the firewall setting which doesn't support FTP passive mode. I tried connecting using FTP SSL explicit with WinSCP and it wouldn't connect.

Under FTP PASV mode, FTP server replies FTP client with the port to connect for data transfer. When using SSL, this information can't be viewed by firewall and the firewall doesn't know which port to open up for data transfer.
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Re: Exchange BACKUPSET - using SFTP

Postby steveyg_uk » Fri Nov 21, 2014 11:04 pm

I see. I use BILLION 8800NG.

I'll see if it works with FILE ZILLA. If it does, then it shows it isn't the firewall; as why would it work with one product and not the other.
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Re: Exchange BACKUPSET - using SFTP

Postby steveyg_uk » Fri Nov 21, 2014 11:06 pm

Afraid it doesn't appear to be the firewall....

Command: PASV
Response: 227 Entering Passive Mode (x,x,238,115,216,249)
Command: MLSD
Response: 150 Opening BINARY mode SSL data connection for 'file list'.
Response: 226 Transfer complete.
Status: Directory listing successful

See from above, connection made using passive mode FTP with SSL.

Am I correct?
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Re: Exchange BACKUPSET - using SFTP

Postby CloudBacko » Fri Nov 21, 2014 11:35 pm

Can you try sending/receiving files using passive mode from external IP ?
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Re: Exchange BACKUPSET - using SFTP

Postby steveyg_uk » Fri Nov 21, 2014 11:39 pm

Of course - using FileZilla? Shall I use SSL or non SSL?

Currently I have a connection from a customer site using plain FTP passive mode using your software doing a test FTP of Exchange.
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Re: Exchange BACKUPSET - using SFTP

Postby steveyg_uk » Fri Nov 21, 2014 11:48 pm

CloudBacko wrote:Can you try sending/receiving files using passive mode from external IP ?


I've tried from external customer site, using FILEZILLA, SSL, Passive;-

Can create folder
delete folder
send 18 meg file
can delete 18 meg file
and send file from SYNOLOGY to External Customer.

All works fine using filezilla.

Command: PASS **********
Response: 230 User xyz logged in.
Command: OPTS UTF8 ON
Response: 200 OK, UTF-8 enabled
Command: PBSZ 0
Response: 200 PBSZ command successful (PBSZ=0).
Command: PROT P
Response: 200 Protection level set to Private.
Status: Connected
Status: Starting download of /nightlayer-ftp/test-ext-customer-ssl/outlook2010-kb2825795-fullfile-x86-glb.exe
Command: CWD /nightlayer-ftp/test-ext-customer-ssl
Response: 250 CWD command successful.
Command: TYPE I
Response: 200 Type set to I.
Command: PASV
Response: 227 Entering Passive Mode (x,x,238,115,216,245)
Command: RETR outlook2010-kb2825795-fullfile-x86-glb.exe
Response: 150 Opening BINARY mode SSL data connection for 'outlook2010-kb2825795-fullfile-x86-glb.exe' (18853816 bytes).
Response: 226 Transfer complete.
Status: File transfer successful, transferred 18,853,816 bytes in 10 seconds
Command: DELE outlook2010-kb2825795-fullfile-x86-glb.exe
Response: 250 DELE command successful.
Command: CWD /nightlayer-ftp
Response: 250 CWD command successful.
Command: RMD test-ext-customer-ssl
Response: 250 RMD command successful.
Status: Retrieving directory listing...
Command: PASV
Response: 227 Entering Passive Mode (x,x,238,115,216,243)
Command: MLSD
Response: 150 Opening BINARY mode SSL data connection for 'file list'.
Response: 226 Transfer complete.
Status: Directory listing successful
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Re: Exchange BACKUPSET - using SFTP

Postby CloudBacko » Sat Nov 22, 2014 1:49 pm

I have found out what is wrong. The passive data channel must be configured to be under SSL encryption explicitly. Please do the following again. It should work now.

1. Make sure that you have CloudBacko 1.7.0.0 running
2. Stop "CloudBacko Pro Services" from Windows Services and close CloudBacko GUI if running
3. Download https://s3.amazonaws.com/CloudBacko/unofficial/cb.jar and save it in C:\Program Files\CloudBacko Pro\bin (overwrite existing file)
4. Start "CloudBacko Pro Services" from Windows Services
5. Open CloudBacko GUI and try again
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Re: Exchange BACKUPSET - using SFTP

Postby steveyg_uk » Sat Nov 22, 2014 4:57 pm

Bingo !!

We have it working via SSL - Thank you.

Questions;-

1. Will this 'fix' be applied to future updates?
2. Exchange Backup - what's difference between Sequential and Concurrent
3. Exchange Backup - should I create two schedules - daily / logs
4. If I want to backup for 3 sites to my Synology System, do I have to purchase 3 licences? If so, any chance of a discount due to amount of hours both you and I have spent on this?
5. Licencing - is it 'one off' or annually?

Once again, thank you for all your help !
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Re: Exchange BACKUPSET - using SFTP

Postby CloudBacko » Sun Nov 23, 2014 2:35 pm

steveyg_uk wrote:1. Will this 'fix' be applied to future updates?

Yes, the fix will be available in future update.

steveyg_uk wrote:2. Exchange Backup - what's difference between Sequential and Concurrent

If you have multiple destinations, it defines whether you want backup to multiple destinations to be run sequentially or concurrently.

steveyg_uk wrote:3. Exchange Backup - should I create two schedules - daily / logs

Normally, our users creates a daily log backup schedule and a weekly database schedule.

steveyg_uk wrote:4. If I want to backup for 3 sites to my Synology System, do I have to purchase 3 licences? If so, any chance of a discount due to amount of hours both you and I have spent on this?

You need a license for each instance of CloudBacko. In your case, you need 3 licenses. Please don't ask for discount. $US39 / instance is already the cheapest in the market.

steveyg_uk wrote:5. Licencing - is it 'one off' or annually?

It is a one-off licensing model which include free update within the major release (version 1) but it doesn't include upgrade to version 2. If you want version 2, you need to buy again.
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Re: Exchange BACKUPSET - using SFTP / FTP

Postby steveyg_uk » Sun Nov 23, 2014 5:01 pm

Thank you for your email.

You mention I just need to spend $39 dollars? I thought I have to spent $190 odd in order to get the Exchange Addon? Am I incorrect?
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Re: Exchange BACKUPSET - using SFTP / FTP

Postby steveyg_uk » Sun Nov 23, 2014 5:44 pm

This is from your website;-

If you need to back up Microsoft Exchange Server installed on a Windows server, you need to purchase 1 CloudBacko Pro and 1 Microsoft Exchange Server. The total price would be US$39 + US$159 = US$198

As I've spent many many hours on this with your great assistance, if the above is correct at a cost of $198 each; could I have a discount; as I am looking to order 3.

Thank you.
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Re: Exchange BACKUPSET - using SFTP / FTP

Postby CloudBacko » Sun Nov 23, 2014 6:20 pm

You are correct. However, the problem here is on SFTP and FTP which is part of the basic module which costs only US$39. There is no problem on Exchange module so a discount on troubleshooting is not relevant.
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Re: Exchange BACKUPSET - using SFTP / FTP

Postby steveyg_uk » Sun Nov 23, 2014 6:23 pm

I understand that.

I guess a potential customer looking to place an order for 3 licences to include Exchange Module - can you do a discount, is all I'm trying to ask.
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Re: Exchange BACKUPSET - using SFTP / FTP

Postby CloudBacko » Mon Nov 24, 2014 9:59 am

I just consult our sales manager on the possibility of a discount after coming back to the office. He says a discount is not compliant with CloudBacko pricing strategy of keeping a very simple and static pricing structure and he can only offer discount if you make purchase of US$1000 or above.

I am sorry that I can offer no further help on discount here.
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Re: Exchange BACKUPSET - using SFTP / FTP

Postby CloudBacko » Mon Dec 01, 2014 4:02 pm

I would like to get back to the SFTP problem on Synology. After searching a while for a solution, it might be related to the problem described in this post http://forum.synology.com/enu/viewtopic.php?f=250&t=92648 . We need to see how Synology address this problem before investigate further.

See also https://forum.synology.com/enu/viewtopic.php?f=145&t=93518 . My guess is that if you can enable the support of diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1 or diffie-hellman-group14-sha1 on the SFTP server of the Synology NAS device, SFTP will work.
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Re: Exchange BACKUPSET - using SFTP / FTP (#10499, #10506)

Postby stephenk » Thu Dec 18, 2014 2:04 pm

I am also looking for a solution to the SFTP issue as I am in the process of deploying multiple Synology NAS for off site backups using CloudBacko. I would be happy to test the internal version if possible as I am still within the 30 days trial of CloudBacko with a view to finalising the whole backup process before making my purchase.
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Re: Exchange BACKUPSET - using SFTP / FTP (#10499, #10506)

Postby CloudBacko » Thu Dec 18, 2014 4:55 pm

I have sent you a private message which contains the instructions of how to test with the internal release.
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Re: SFTP destination with error "Algorithm negotiation fail"

Postby CloudBacko » Tue Jan 06, 2015 4:30 pm

When setting up a SFTP destination, an error "Algorithm negotiation fail" may sometimes pop up. This is because the OpenSSH version (6.6 in this case) used by the SFTP server is using a key exchange algorithm not supported by CloudBacko bundled Java runtime environment. It is required to add the BouncyCastle crypto provider to CloudBacko to support this crypto algorithm. You can do the following to fix this problem:

1. Make sure you are on at least 1.9.0.0
2. Download http://s3.amazonaws.com/CloudBacko/unof ... 0x/bin.zip
3. Shutdown CloudBacko Windows Services
4. Expand the files inside bin.zip to "C:\Program Files\CloudBacko Pro" or "C:\Program Files\CloudBacko Lite"
5. Startup CloudBacko Windows Services again
6. Open CloudBacko GUI to configure a new SFTP destination again.
Samuel Chan
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Re: Exchange BACKUPSET - using SFTP / FTP (#10499, #10506)

Postby stephenk » Wed Jan 07, 2015 7:27 am

Working fine for me now. Thank you.

Can you confirm if this will be included in a future release?
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Re: Exchange BACKUPSET - using SFTP / FTP (#10499, #10506)

Postby rafael » Wed Jan 07, 2015 11:50 am

Hello,

Yes, this fix will be included in the next official release.

But we are not able to provide you with a firm release date at the moment.
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