base-de-connaissances/ssh/algorithmes-chiffrement.md

% Gestion des algorithmes de chiffrement

Erreurs de compatibilité d'algorithmes d'échange

• "Unable to negotiate with 1.2.3.4 port 22: no matching key exchange method found. Their offer: diffie-hellman-group14-sha1"
• "Unable to negotiate" "no matching host key type found. Their offer: ssh-rsa"

Host switch-hp
    Hostname 10.29.10.10
    Ciphers 3des-cbc
    KexAlgorithms +diffie-hellman-group14-sha1
    HostKeyAlgorithms=+ssh-rsa
    User user

• SSH returns: no matching host key type found. Their offer: ssh-dss - Ask Ubuntu
• ssh unable to negotiate - no matching key exchange method found - Unix & Linux Stack Exchange
• LINUX - SSH - no matching key exchange method found - Admin Malin
• Troubleshooting SSH “No Matching Key Exchange/Host Key Method/Type Found” errors | Incredigeek