Ssh knownhosts not updating

ssh knownhosts not updating-14
The key difference comes after the string SSH2_MSG_SERVICE_ACCEPT What I want you to notice is that the old version offers (and is accepted by the 'old' server - the DSA based key pair while the new server never offers the DSA based key.Note: the 'solution' for this is to add (at least one of) the rsa, ecdsa, or the ed25519 based PKI pairs.

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Keyboard-interactive authentication is disabled to avoid man-in-the-middle attacks.

I have a bash script starting automatically when the system boots via the .profile file in the users home directory: sudo The script starts just as expected however, when calling things like ssh [email protected] inside the script, the known_hosts file gets placed in the /root/directory instead of the user account calling the script!

Looking above you can see it does not support any of the - 15 years later - preferred algorithms, not even one -cbr (rotating), only -cbc (block-copy).

If you client does not have an option to provide the keys, etc.

# ciphers aes128-cbc,aes192-cbc,aes256-cbc,blowfish-cbc,arcfour # only adding aes256-cbc as an "old" cipher ciphers aes128-ctr,aes192-ctr,aes256-ctr,[email protected],aes256-cbc # KEX Key Exchange algorithms # default from openssh 6.7 are: # [email protected],diffie-hellman-group-exchange-sha256,\ # diffie-hellman-group14-sha1 # an older kex are: none, Kex Algorithms diffie-hellman-group1-sha1 # only adding diffie-hellman-group-sha1 as an "old" KEX # and this should be deleted ASAP as it is clearly "one of the problems" with SSL based encryption Kex Algorithms [email protected],diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1 # MAC message authentification code # the new defaults are: # [email protected],[email protected], # [email protected],hmac-sha2-512- # [email protected], # [email protected],[email protected], # hmac-sha2-256,hmac-sha2-512 # older defaults (still supported) are: # macs hmac-sha1,hmac-md5 # consider removing hmac-sha1-96,hmac-sha1,hmac-md5 "Soon!

" macs hmac-sha2-256,hmac-sha2-512,hmac-sha1-96,hmac-sha1 Supported ciphers: 3des-cbc,aes256-cbc,aes192-cbc,aes128-cbc,blowfish-cbc,twofish-cbc,twofish256-cbc,twofish192-cbc,twofish128-cbc,[email protected],cast128-cbc,[email protected],arcfour,none Supported MAC algorithms: hmac-md5,hmac-md5-96,hmac-sha1,hmac-sha1-96,[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],none Mine - was - an very old client - for my desktop.

server list : [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected]: Ssh2Transport: lang s to c: `', lang c to s: `' debug: Ssh2Transport: Couldn't agree on kex or hostkey alg.

(chosen_kex = NULL, chosen_host_key = ssh-rsa) debug: Ssh2Common: DISCONNECT received: Algorithm negotiation failed.

supported (Open SSH should have the option debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug2: kex_parse_kexinit: ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-grousha1,diffie-hellman-group1-sha1 debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],[email protected]@openssh.com,[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-rsa,ssh-dss debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected]

debug: Open SSH: Major: 7 Minor: 3 Revision: 0 debug: Ssh2Transport: All versions of Open SSH handle kex guesses incorrectly.

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