KeyExchangeFailed
Open
Nobody has claimed this yet.
- Dominant language
- C#
- Stars
- 4.4k
- Forks
- 993
- Avg merge
- 9d 21h
- Merged PRs (30d)
- 1
Description
I'm connecting to an external SFTP Server. I can connect using WinSCP which gives me the following information:
File transfer protocol = SFTP-6
Cryptographic protocol = SSH-2
SSH implementation = CerberusFTPServer_12.0 FIPS
Encryption algorithm = AES-256 SDCTR (AES-NI accelerated)
Server host key algorithm = ssh-rsa 2048
Trying to connect I get the following error
Renci.SshNet.Common.SshConnectionException: 'The connection was closed by the server: Key exchange failed: Could not agree on key exchange parameters (KeyExchangeFailed).
Thank you.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by comparing the SSH-2 algorithms reported by WinSCP with the key-exchange parameters supported by SSH.NET when connecting to CerberusFTPServer_12.0 FIPS. Reproduce the KeyExchangeFailed error if possible and determine whether the client can negotiate a compatible configuration; the issue is done when the incompatibility is fixed or clearly documented with the required details.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- csharp
- Domain
- networking, security
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100