KiTTY
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Published
20 hours ago •
cyd01
cyd01
Support kex algorithm - curve25519-sha256
Error connection with curve25519-sha256 kex algorithm. SSHD configuration:
...
KexAlgorithms curve25519-sha256
Ciphers [email protected]
MACs [email protected]
...
SSHD log:
авг 05 20:16:02 test systemd[1]: Starting SSH Daemon (192.168.248.143:57579)...
авг 05 20:16:02 test systemd[1]: Started SSH Daemon (192.168.248.143:57579).
авг 05 20:16:02 test sshd[93798]: debug1: inetd sockets after dupping: 3, 4
авг 05 20:16:02 test sshd[93798]: Connection from 192.168.248.143 port 57579 on 192.168.248.100 port 22 rdomain ""
авг 05 20:16:02 test sshd[93798]: debug1: Local version string SSH-2.0-OpenSSH_8.3
авг 05 20:16:02 test sshd[93798]: debug1: Remote protocol version 2.0, remote software version PuTTY_KiTTY
авг 05 20:16:02 test sshd[93798]: debug1: no match: PuTTY_KiTTY
авг 05 20:16:02 test sshd[93798]: debug2: fd 3 setting O_NONBLOCK
авг 05 20:16:02 test sshd[93798]: debug2: Network child is on pid 93799
авг 05 20:16:02 test sshd[93798]: debug1: permanently_set_uid: 498/65534 [preauth]
авг 05 20:16:02 test sshd[93798]: debug1: list_hostkey_types: ssh-ed25519 [preauth]
авг 05 20:16:02 test sshd[93798]: debug1: SSH2_MSG_KEXINIT sent [preauth]
авг 05 20:16:02 test sshd[93798]: debug1: SSH2_MSG_KEXINIT received [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: local server KEXINIT proposal [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: KEX algorithms: curve25519-sha256 [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: host key algorithms: ssh-ed25519 [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: ciphers ctos: [email protected] [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: ciphers stoc: [email protected] [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: MACs ctos: [email protected] [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: MACs stoc: [email protected] [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: compression ctos: none [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: compression stoc: none [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: languages ctos: [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: languages stoc: [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: first_kex_follows 0 [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: reserved 0 [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: peer client KEXINIT proposal [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: KEX algorithms: [email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,rsa2048-sha256,rsa1024-sha1,diffie-hellman-group1-sha1 [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: host key algorithms: ssh-ed25519,ssh-rsa,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-dss [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: ciphers ctos: [email protected],aes256-ctr,aes256-cbc,[email protected],aes192-ctr,aes192-cbc,aes128-ctr,aes128-cbc,blowfish-ctr,blowfish-cbc,3des-ctr,3des-cbc,arcfour256,arcfour128 [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: ciphers stoc: [email protected],aes256-ctr,aes256-cbc,[email protected],aes192-ctr,aes192-cbc,aes128-ctr,aes128-cbc,blowfish-ctr,blowfish-cbc,3des-ctr,3des-cbc,arcfour256,arcfour128 [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: MACs ctos: hmac-sha2-256,hmac-sha1,hmac-sha1-96,hmac-md5,[email protected],[email protected],[email protected],[email protected] [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: MACs stoc: hmac-sha2-256,hmac-sha1,hmac-sha1-96,hmac-md5,[email protected],[email protected],[email protected],[email protected] [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: compression ctos: none,zlib,[email protected] [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: compression stoc: none,zlib,[email protected] [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: languages ctos: [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: languages stoc: [preauth]
авг 05 20:16:02 test sshd[93798]: debug2: first_kex_follows 0 [preauth]
авг 05 20:16:02 test systemd[1]: [email protected]:22-192.168.248.143:57579.service: Succeeded.
авг 05 20:16:02 test sshd[93798]: debug2: reserved 0 [preauth]
авг 05 20:16:02 test sshd[93798]: debug1: kex: algorithm: (no match) [preauth]
авг 05 20:16:02 test sshd[93798]: Unable to negotiate with 192.168.248.143 port 57579: no matching key exchange method found. Their offer: [email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,rsa2048-sha256,rsa1024-sha1,diffie-hellman-group1-sha1 [preauth]
авг 05 20:16:02 test sshd[93798]: debug1: do_cleanup [preauth]
авг 05 20:16:02 test sshd[93798]: debug1: monitor_read_log: child log fd closed
авг 05 20:16:02 test sshd[93798]: debug1: do_cleanup
авг 05 20:16:02 test sshd[93798]: debug1: Killing privsep child 93799
With KexAlgorithms [email protected] worked.
ed25519 support was added to putty in 0.71 release (March 2019). kitty based on putty 0.71 but doesn't support ed25519 🤔
UPD: ed25519 works, but PPK V3 (default in puttygen) is not supported
