darkoperator / darkoperator/Posh-SSH
I could not connect to device after update
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Description
Hello, good evening
I could not connect in fortianalyzer device after device update to version 7.0.4, I am getting the following error on device:
SSH unable to negotiate with 192.168.10.10 port 63012: no matching host key type found. Their offer: ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-rsa,ssh-dss
I got the following SSH Error on machine:

Below there is my machine configuration:
PS U:> Get-Module posh-ssh
ModuleType Version Name ExportedCommands
Manifest 3.0.8 Posh-SSH {Get-SCPItem, Get-SFTPItem, Get-SSHHostKey, Get-SSHJsonKnownHost...}
PS U:> $PSVersionTable
Name Value
PSVersion 5.1.22000.832
PSEdition Desktop
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
BuildVersion 10.0.22000.832
CLRVersion 4.0.30319.42000
WSManStackVersion 3.0
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1
I am getting the same error in another machines.
Obs. It is working fine using "Putty".
Thanks in advance.
Contributor guide
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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 reproducing the SSH connection from PowerShell 5.1 with Posh-SSH 3.0.8 against the FortiAnalyzer 7.0.4 device, then compare the negotiation with PuTTY. Done means determining whether the failure is reproducible and documenting a verified compatibility fix or limitation.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- powershell
- Domain
- networking
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100