Am 19.10.2015 17:06, schrieb Robert Dinse:
the new version of openssh disabled certain insecure
ciphers...
Version7 is what you mean. I use 6.9 on both client and server.
you can add
the following line to your /etc/ssh/sshd_config manually enable the
insecure old ciphers:
KexAlgorithms
curve25519-sha...@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1
Adding these ciphers doesn't help - same algo error,
Thats wired coz I can ssh to the server without any issues.
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On Mon, 19 Oct 2015, i...@k4ts.net wrote:
Date: Mon, 19 Oct 2015 15:12:43 +0200
From: i...@k4ts.net
To: x2go-user@lists.x2go.org
Subject: [X2Go-User] ssh kex error
hi, i'm not able to connect
to my new hardened gentoo server using x2go.
No matter which key type i select for the connection,
the client (v. 4.0.5.0) terminates with the following:
kex error : no match for method server host key algo:
server [ssh-rsa,ssh-ed25519], client [ecdsa-sha2-nistp256]
I have rsa and ed25519 keys on my client and server.
sshing from the shell works like always. log is attached.
do you have an idea, whats might wrong?
thx,
k4t
k4tfish@e10 ~ $ ssh k4tfish@host
OpenSSH_6.9p1-hpn14v5, OpenSSL 1.0.2d 9 Jul 2015
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Connecting to host.net port 51822.
debug1: Connection established.
debug1: identity file /home/k4tfish/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /home/k4tfish/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/k4tfish/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/k4tfish/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/k4tfish/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/k4tfish/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/k4tfish/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/k4tfish/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.9p1-hpn14v5
debug1: Remote protocol version 2.0, remote software version
OpenSSH_6.9p1-hpn14v5
debug1: match: OpenSSH_6.9p1-hpn14v5 pat OpenSSH* compat 0x04000000
debug1: Authenticating to host...net:51822 as 'k4tfish'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: AUTH STATE IS 0
debug1: REQUESTED ENC.NAME is 'chacha20-poly1...@openssh.com'
debug1: kex: server->client chacha20-poly1...@openssh.com <implicit>
none
debug1: REQUESTED ENC.NAME is 'chacha20-poly1...@openssh.com'
debug1: kex: client->server chacha20-poly1...@openssh.com <implicit>
none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ssh-ed25519 SHA256:xyz
debug1: Host '[host.net]:51822' is known and matches the ED25519 host
key.
debug1: Found key in /home/k4tfish/.ssh/known_hosts:203
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: Roaming not allowed by server
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue:
publickey,password,keyboard-interactive
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /home/k4tfish/.ssh/id_rsa
debug1: Server accepts key: pkalg ssh-rsa blen 279
debug1: Authentication succeeded (publickey).
Authenticated to host ([123.123.456.7]:51822).
debug1: Final hpn_buffer_size = 2097152
debug1: HPN Disabled: 0, HPN Buffer Size: 2097152
debug1: channel 0: new [client-session]
debug1: Enabled Dynamic Window Scaling
debug1: Requesting no-more-sessi...@openssh.com
debug1: Entering interactive session.
debug1: client_input_global_request: rtype hostkeys...@openssh.com
want_reply 0
debug1: Sending environment.
debug1: Sending env LC_COLLATE = C
debug1: Sending env LANG = en_US.utf8
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