Trying to connect to a Dell iDRAC 6. The iDRAC reports it is running OpenSSH 5.2. >From Fedora Linux 20 with OpenSSH 6.4p1, connections succeed. >From Fedora Linux 23 with OpenSSH 7.2p2, connections succeed. >From Fedora Linux 27 with OpenSSH 7.6p1, connections fail prior to prompting for a password. The message is, "Received disconnect from (IP address) port 22:11: Logged out." Trying with "ssh -vvv" produces output as shown below. There must be a setting to accommodate this situation. I have no way to upgrade the iDRAC nor to run with -ddd on it. -vvv output: OpenSSH_7.6p1, OpenSSL 1.1.0g-fips 2 Nov 2017 debug1: Reading configuration data /home/user/.ssh/config debug1: /home/user/.ssh/config line 1: Applying options for * debug3: kex names ok: [diffie-hellman-group1-sha1] debug1: Reading configuration data /etc/ssh/ssh_config debug3: /etc/ssh/ssh_config line 52: Including file /etc/ssh/ssh_config.d/05-redhat.conf depth 0 debug1: Reading configuration data /etc/ssh/ssh_config.d/05-redhat.conf debug3: /etc/ssh/ssh_config.d/05-redhat.conf line 2: Including file /etc/crypto-policies/back-ends/openssh.config depth 1 debug1: Reading configuration data /etc/crypto-policies/back-ends/openssh.config debug3: gss kex names ok: [gss-gex-sha1-,gss-group14-sha1-] debug3: kex names ok: [curve25519-sha256@xxxxxxxxxx,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1] debug1: /etc/ssh/ssh_config.d/05-redhat.conf line 8: Applying options for * debug1: /etc/ssh/ssh_config line 54: Applying options for * debug3: kex names ok: [diffie-hellman-group1-sha1] debug1: auto-mux: Trying existing master debug1: Control socket "/tmp/ssh-root@idracname:22" does not exist debug2: resolving "idracname" port 22 debug2: ssh_connect_direct: needpriv 0 debug1: Connecting to idracname [(IP address)] port 22. debug1: Connection established. debug1: identity file /home/user/.ssh/id_rsa type 0 debug1: key_load_public: No such file or directory debug1: identity file /home/user/.ssh/id_rsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/user/.ssh/id_dsa type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/user/.ssh/id_dsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/user/.ssh/id_ecdsa type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/user/.ssh/id_ecdsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/user/.ssh/id_ed25519 type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/user/.ssh/id_ed25519-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_7.6 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.2 debug1: match: OpenSSH_5.2 pat OpenSSH_5* compat 0x0c000000 debug2: fd 3 setting O_NONBLOCK debug1: Authenticating to idracname:22 as 'root' debug3: hostkeys_foreach: reading file "/home/user/.ssh/known_hosts" debug3: send packet: type 20 debug1: SSH2_MSG_KEXINIT sent debug3: receive packet: type 20 debug1: SSH2_MSG_KEXINIT received debug2: local client KEXINIT proposal debug2: KEX algorithms: curve25519-sha256,curve25519-sha256@xxxxxxxxxx,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1,ext-info-c debug2: host key algorithms: ecdsa-sha2-nistp256-cert-v01@xxxxxxxxxxx,ecdsa-sha2-nistp384-cert-v01@xxxxxxxxxxx,ecdsa-sha2-nistp521-cert-v01@xxxxxxxxxxx,ssh-ed25519-cert-v01@xxxxxxxxxxx,ssh-rsa-cert-v01@xxxxxxxxxxx,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519,rsa-sha2-512,rsa-sha2-256,ssh-rsa debug2: ciphers ctos: aes256-gcm@xxxxxxxxxxx,chacha20-poly1305@xxxxxxxxxxx,aes256-ctr,aes256-cbc,aes128-gcm@xxxxxxxxxxx,aes128-ctr,aes128-cbc,3des-cbc debug2: ciphers stoc: aes256-gcm@xxxxxxxxxxx,chacha20-poly1305@xxxxxxxxxxx,aes256-ctr,aes256-cbc,aes128-gcm@xxxxxxxxxxx,aes128-ctr,aes128-cbc,3des-cbc debug2: MACs ctos: umac-128-etm@xxxxxxxxxxx,hmac-sha1-etm@xxxxxxxxxxx,hmac-sha2-256-etm@xxxxxxxxxxx,hmac-sha2-512-etm@xxxxxxxxxxx,umac-128@xxxxxxxxxxx,hmac-sha1,hmac-sha2-256,hmac-sha2-512 debug2: MACs stoc: umac-128-etm@xxxxxxxxxxx,hmac-sha1-etm@xxxxxxxxxxx,hmac-sha2-256-etm@xxxxxxxxxxx,hmac-sha2-512-etm@xxxxxxxxxxx,umac-128@xxxxxxxxxxx,hmac-sha1,hmac-sha2-256,hmac-sha2-512 debug2: compression ctos: none,zlib@xxxxxxxxxxx,zlib debug2: compression stoc: none,zlib@xxxxxxxxxxx,zlib debug2: languages ctos: debug2: languages stoc: debug2: first_kex_follows 0 debug2: reserved 0 debug2: peer server KEXINIT proposal debug2: KEX algorithms: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1 debug2: host key algorithms: ssh-rsa,ssh-dss debug2: ciphers ctos: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@xxxxxxxxxxxxxx debug2: ciphers stoc: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@xxxxxxxxxxxxxx debug2: MACs ctos: hmac-md5,hmac-sha1,umac-64@xxxxxxxxxxx,hmac-ripemd160,hmac-ripemd160@xxxxxxxxxxx,hmac-sha1-96,hmac-md5-96 debug2: MACs stoc: hmac-md5,hmac-sha1,umac-64@xxxxxxxxxxx,hmac-ripemd160,hmac-ripemd160@xxxxxxxxxxx,hmac-sha1-96,hmac-md5-96 debug2: compression ctos: none,zlib@xxxxxxxxxxx debug2: compression stoc: none,zlib@xxxxxxxxxxx debug2: languages ctos: debug2: languages stoc: debug2: first_kex_follows 0 debug2: reserved 0 debug1: kex: algorithm: diffie-hellman-group-exchange-sha256 debug1: kex: host key algorithm: ssh-rsa debug1: kex: server->client cipher: aes256-ctr MAC: hmac-sha1 compression: none debug1: kex: client->server cipher: aes256-ctr MAC: hmac-sha1 compression: none debug1: kex: diffie-hellman-group-exchange-sha256 need=32 dh_need=32 debug1: kex: diffie-hellman-group-exchange-sha256 need=32 dh_need=32 debug3: send packet: type 34 debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(2048<8192<8192) sent debug3: receive packet: type 31 debug1: got SSH2_MSG_KEX_DH_GEX_GROUP debug2: bits set: 4082/8192 debug3: send packet: type 32 debug1: SSH2_MSG_KEX_DH_GEX_INIT sent ... (long pause) debug3: receive packet: type 1 Received disconnect from (IP address) port 22:11: Logged out. Disconnected from (IP address) port 22 -- Dave Close _______________________________________________ openssh-unix-dev mailing list openssh-unix-dev@xxxxxxxxxxx https://lists.mindrot.org/mailman/listinfo/openssh-unix-dev
