Dear friends, I am not sure what has changed and it is possible that some configuration has inadvertently changed that has messed things up but over the past 3 hours, I have been having this problem in that my key is no longer recognized. So, here is what I get when I try to log in to remote.server as user fedusr (other things are below): 19:58:38~$ ssh remote -vvv OpenSSH_8.6p1, OpenSSL 1.1.1l FIPS 24 Aug 2021 debug1: Reading configuration data /home/fedusr/.ssh/config debug1: /home/fedusr/.ssh/config line 1: Applying options for * debug1: /home/fedusr/.ssh/config line 4: Applying options for remote debug1: Reading configuration data /etc/ssh/ssh_config debug3: /etc/ssh/ssh_config line 55: Including file /etc/ssh/ssh_config.d/50-redhat.conf depth 0 debug1: Reading configuration data /etc/ssh/ssh_config.d/50-redhat.conf debug2: checking match for 'final all' host remote.server originally remote debug3: /etc/ssh/ssh_config.d/50-redhat.conf line 3: not matched 'final' debug2: match not found debug3: /etc/ssh/ssh_config.d/50-redhat.conf line 5: Including file /etc/crypto-policies/back-ends/openssh.config depth 1 (parse only) debug1: Reading configuration data /etc/crypto-policies/back-ends/openssh.config debug3: gss kex names ok: [gss-curve25519-sha256-,gss-nistp256-sha256-,gss-group14-sha256-,gss-group16-sha512-] debug3: kex names ok: [curve25519-sha256,curve25519-sha256@xxxxxxxxxx,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512] debug1: configuration requests final Match pass debug1: re-parsing configuration debug1: Reading configuration data /home/fedusr/.ssh/config debug1: /home/fedusr/.ssh/config line 1: Applying options for * debug1: /home/fedusr/.ssh/config line 9: Applying options for remote.server debug1: Reading configuration data /etc/ssh/ssh_config debug3: /etc/ssh/ssh_config line 55: Including file /etc/ssh/ssh_config.d/50-redhat.conf depth 0 debug1: Reading configuration data /etc/ssh/ssh_config.d/50-redhat.conf debug2: checking match for 'final all' host remote.server originally remote debug3: /etc/ssh/ssh_config.d/50-redhat.conf line 3: matched 'final' debug2: match found debug3: /etc/ssh/ssh_config.d/50-redhat.conf line 5: 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-curve25519-sha256-,gss-nistp256-sha256-,gss-group14-sha256-,gss-group16-sha512-] debug3: kex names ok: [curve25519-sha256,curve25519-sha256@xxxxxxxxxx,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512] debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts' -> '/home/fedusr/.ssh/known_hosts' debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts2' -> '/home/fedusr/.ssh/known_hosts2' debug2: resolving "remote.server" port 51064 debug3: ssh_connect_direct: entering debug1: Connecting to remote.server [10.25.123.189] port 51064. debug3: set_sock_tos: set socket 5 IP_TOS 0x48 debug2: fd 5 setting O_NONBLOCK debug1: fd 5 clearing O_NONBLOCK debug1: Connection established. debug3: timeout: 599960 ms remain after connect debug1: identity file /home/fedusr/.ssh/id_rsa type 0 debug1: identity file /home/fedusr/.ssh/id_rsa-cert type -1 debug1: identity file /home/fedusr/.ssh/id_dsa type 1 debug1: identity file /home/fedusr/.ssh/id_dsa-cert type -1 debug1: identity file /home/fedusr/.ssh/id_ecdsa type 2 debug1: identity file /home/fedusr/.ssh/id_ecdsa-cert type -1 debug1: identity file /home/fedusr/.ssh/id_ecdsa_sk type -1 debug1: identity file /home/fedusr/.ssh/id_ecdsa_sk-cert type -1 debug1: identity file /home/fedusr/.ssh/id_ed25519 type 3 debug1: identity file /home/fedusr/.ssh/id_ed25519-cert type -1 debug1: identity file /home/fedusr/.ssh/id_ed25519_sk type -1 debug1: identity file /home/fedusr/.ssh/id_ed25519_sk-cert type -1 debug1: identity file /home/fedusr/.ssh/id_xmss type -1 debug1: identity file /home/fedusr/.ssh/id_xmss-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_8.6 debug1: Remote protocol version 2.0, remote software version OpenSSH_8.6 debug1: compat_banner: match: OpenSSH_8.6 pat OpenSSH* compat 0x04000000 debug2: fd 5 setting O_NONBLOCK debug1: Authenticating to remote.server:51064 as 'fedusr' debug3: put_host_port: [remote.server]:51064 debug3: record_hostkey: found key type ED25519 in file /home/fedusr/.ssh/known_hosts:29 debug3: record_hostkey: found key type RSA in file /home/fedusr/.ssh/known_hosts:30 debug3: record_hostkey: found key type ECDSA in file /home/fedusr/.ssh/known_hosts:31 debug3: load_hostkeys_file: loaded 3 keys from [remote.server]:51064 debug1: load_hostkeys: fopen /home/fedusr/.ssh/known_hosts2: No such file or directory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory debug3: order_hostkeyalgs: have matching best-preference key type ssh-ed25519-cert-v01@xxxxxxxxxxx, using HostkeyAlgorithms verbatim 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-group14-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,ext-info-c debug2: host key algorithms: ssh-ed25519-cert-v01@xxxxxxxxxxx,ecdsa-sha2-nistp256-cert-v01@xxxxxxxxxxx,ecdsa-sha2-nistp384-cert-v01@xxxxxxxxxxx,ecdsa-sha2-nistp521-cert-v01@xxxxxxxxxxx,sk-ssh-ed25519-cert-v01@xxxxxxxxxxx,sk-ecdsa-sha2-nistp256-cert-v01@xxxxxxxxxxx,rsa-sha2-512-cert-v01@xxxxxxxxxxx,rsa-sha2-256-cert-v01@xxxxxxxxxxx,ssh-rsa-cert-v01@xxxxxxxxxxx,ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,sk-ssh-ed25519@xxxxxxxxxxx,sk-ecdsa-sha2-nistp256@xxxxxxxxxxx,rsa-sha2-512,rsa-sha2-256,ssh-rsa debug2: ciphers ctos: aes256-gcm@xxxxxxxxxxx,chacha20-poly1305@xxxxxxxxxxx,aes256-ctr,aes128-gcm@xxxxxxxxxxx,aes128-ctr debug2: ciphers stoc: aes256-gcm@xxxxxxxxxxx,chacha20-poly1305@xxxxxxxxxxx,aes256-ctr,aes128-gcm@xxxxxxxxxxx,aes128-ctr debug2: MACs ctos: hmac-sha2-256-etm@xxxxxxxxxxx,hmac-sha1-etm@xxxxxxxxxxx,umac-128-etm@xxxxxxxxxxx,hmac-sha2-512-etm@xxxxxxxxxxx,hmac-sha2-256,hmac-sha1,umac-128@xxxxxxxxxxx,hmac-sha2-512 debug2: MACs stoc: hmac-sha2-256-etm@xxxxxxxxxxx,hmac-sha1-etm@xxxxxxxxxxx,umac-128-etm@xxxxxxxxxxx,hmac-sha2-512-etm@xxxxxxxxxxx,hmac-sha2-256,hmac-sha1,umac-128@xxxxxxxxxxx,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: 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-group14-sha256 debug2: host key algorithms: rsa-sha2-512,rsa-sha2-256,ssh-rsa,ecdsa-sha2-nistp256,ssh-ed25519 debug2: ciphers ctos: chacha20-poly1305@xxxxxxxxxxx,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@xxxxxxxxxxx,aes256-gcm@xxxxxxxxxxx debug2: ciphers stoc: chacha20-poly1305@xxxxxxxxxxx,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@xxxxxxxxxxx,aes256-gcm@xxxxxxxxxxx debug2: MACs ctos: umac-64-etm@xxxxxxxxxxx,umac-128-etm@xxxxxxxxxxx,hmac-sha2-256-etm@xxxxxxxxxxx,hmac-sha2-512-etm@xxxxxxxxxxx,hmac-sha1-etm@xxxxxxxxxxx,umac-64@xxxxxxxxxxx,umac-128@xxxxxxxxxxx,hmac-sha2-256,hmac-sha2-512,hmac-sha1 debug2: MACs stoc: umac-64-etm@xxxxxxxxxxx,umac-128-etm@xxxxxxxxxxx,hmac-sha2-256-etm@xxxxxxxxxxx,hmac-sha2-512-etm@xxxxxxxxxxx,hmac-sha1-etm@xxxxxxxxxxx,umac-64@xxxxxxxxxxx,umac-128@xxxxxxxxxxx,hmac-sha2-256,hmac-sha2-512,hmac-sha1 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: curve25519-sha256 debug1: kex: host key algorithm: ssh-ed25519 debug1: kex: server->client cipher: aes256-gcm@xxxxxxxxxxx MAC: <implicit> compression: none debug1: kex: client->server cipher: aes256-gcm@xxxxxxxxxxx MAC: <implicit> compression: none debug1: kex: curve25519-sha256 need=32 dh_need=32 debug1: kex: curve25519-sha256 need=32 dh_need=32 debug3: send packet: type 30 debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug3: receive packet: type 31 debug1: SSH2_MSG_KEX_ECDH_REPLY received debug1: Server host key: ssh-ed25519 SHA256:Oog5b0gWsmIAYZgZIFWc9Rhr087UCLchoJlb5ux8LvY debug3: put_host_port: [10.25.123.189]:51064 debug3: put_host_port: [remote.server]:51064 debug3: record_hostkey: found key type ED25519 in file /home/fedusr/.ssh/known_hosts:29 debug3: record_hostkey: found key type RSA in file /home/fedusr/.ssh/known_hosts:30 debug3: record_hostkey: found key type ECDSA in file /home/fedusr/.ssh/known_hosts:31 debug3: load_hostkeys_file: loaded 3 keys from [remote.server]:51064 debug1: load_hostkeys: fopen /home/fedusr/.ssh/known_hosts2: No such file or directory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory debug1: Host '[remote.server]:51064' is known and matches the ED25519 host key. debug1: Found key in /home/fedusr/.ssh/known_hosts:29 debug3: send packet: type 21 debug2: set_newkeys: mode 1 debug1: rekey out after 4294967296 blocks debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug3: receive packet: type 21 debug1: SSH2_MSG_NEWKEYS received debug2: set_newkeys: mode 0 debug1: rekey in after 4294967296 blocks debug1: Skipping ssh-dss key /home/fedusr/.ssh/id_dsa - corresponding algo not in PubkeyAcceptedAlgorithms debug1: Skipping ssh-dss key /home/fedusr/.ssh/id_dsa - corresponding algo not in PubkeyAcceptedAlgorithms debug1: Will attempt key: /home/fedusr/.ssh/id_rsa RSA SHA256:SiFQrcb8BaVwMr65Mm+yfyUTqSN2grVfXTutqDXfpjA agent debug1: Will attempt key: /home/fedusr/.ssh/id_ecdsa ECDSA SHA256:Pj5mRaoS/lINfM2bLBxYhv1xx9IbR0+2qY9sEz+Kq48 agent debug1: Will attempt key: /home/fedusr/.ssh/id_ed25519 ED25519 SHA256:PbBA+HdHM84Al31IsGaTsQjhhqMQdjdJcrowH4LL6J0 agent debug1: Will attempt key: /home/fedusr/.ssh/id_rsa RSA SHA256:Egveyy1ui8/cXaFoYGvF8zE63m+4zYQ1kg64WK8DM/I agent debug1: Will attempt key: /home/fedusr/.ssh/id_ecdsa ECDSA SHA256:/844OPWwIB4ly00YnMmfOf/aZAWtlImRXWhhiFkhdTw agent debug1: Will attempt key: /home/fedusr/.ssh/id_ecdsa_sk debug1: Will attempt key: /home/fedusr/.ssh/id_ed25519_sk debug1: Will attempt key: /home/fedusr/.ssh/id_xmss debug2: pubkey_prepare: done debug3: send packet: type 5 debug3: receive packet: type 7 debug1: SSH2_MSG_EXT_INFO received debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,sk-ssh-ed25519@xxxxxxxxxxx,ssh-rsa,rsa-sha2-256,rsa-sha2-512,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,sk-ecdsa-sha2-nistp256@xxxxxxxxxxx,webauthn-sk-ecdsa-sha2-nistp256@xxxxxxxxxxx> debug3: receive packet: type 6 debug2: service_accept: ssh-userauth debug1: SSH2_MSG_SERVICE_ACCEPT received debug3: send packet: type 50 debug3: receive packet: type 51 debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug3: start over, passed a different list publickey,gssapi-keyex,gssapi-with-mic,password debug3: preferred publickey,keyboard-interactive,password debug3: authmethod_lookup publickey debug3: remaining preferred: keyboard-interactive,password debug3: authmethod_is_enabled publickey debug1: Next authentication method: publickey debug1: Offering public key: /home/fedusr/.ssh/id_rsa RSA SHA256:SiFQrcb8BaVwMr65Mm+yfyUTqSN2grVfXTutqDXfpjA agent debug3: send packet: type 50 debug2: we sent a publickey packet, wait for reply debug3: receive packet: type 51 debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug1: Offering public key: /home/fedusr/.ssh/id_ecdsa ECDSA SHA256:Pj5mRaoS/lINfM2bLBxYhv1xx9IbR0+2qY9sEz+Kq48 agent debug3: send packet: type 50 debug2: we sent a publickey packet, wait for reply debug3: receive packet: type 51 debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug1: Offering public key: /home/fedusr/.ssh/id_ed25519 ED25519 SHA256:PbBA+HdHM84Al31IsGaTsQjhhqMQdjdJcrowH4LL6J0 agent debug3: send packet: type 50 debug2: we sent a publickey packet, wait for reply debug3: receive packet: type 51 debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug1: Offering public key: /home/fedusr/.ssh/id_rsa RSA SHA256:Egveyy1ui8/cXaFoYGvF8zE63m+4zYQ1kg64WK8DM/I agent debug3: send packet: type 50 debug2: we sent a publickey packet, wait for reply debug3: receive packet: type 51 debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug1: Offering public key: /home/fedusr/.ssh/id_ecdsa ECDSA SHA256:/844OPWwIB4ly00YnMmfOf/aZAWtlImRXWhhiFkhdTw agent debug3: send packet: type 50 debug2: we sent a publickey packet, wait for reply debug3: receive packet: type 51 debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug1: Trying private key: /home/fedusr/.ssh/id_ecdsa_sk debug3: no such identity: /home/fedusr/.ssh/id_ecdsa_sk: No such file or directory debug1: Trying private key: /home/fedusr/.ssh/id_ed25519_sk debug3: no such identity: /home/fedusr/.ssh/id_ed25519_sk: No such file or directory debug1: Trying private key: /home/fedusr/.ssh/id_xmss debug3: no such identity: /home/fedusr/.ssh/id_xmss: No such file or directory debug2: we did not send a packet, disable method debug3: authmethod_lookup password debug3: remaining preferred: ,password debug3: authmethod_is_enabled password debug1: Next authentication method: password fedusr@remote.server's password: I have the following in my localhost .ssh: -rw-r--r-- 1 fedusr fedusr 196 Nov 3 2015 id_ecdsa.pub -rw------- 1 fedusr fedusr 314 Nov 3 2015 id_ecdsa The authorized_keys matches the id_ecdsa.pub in the local file. However, I can no longer do as password-less connection, it worked fine till about 30 hours ago. What could be wrong? Both machines are automatically updated, the one at localhost at 21:00 hours CT (US) and the other (remote server) at 03:00 CT (US) everyday. But the connection did work fine even after the two machines got updated for a while, till around 12:00 yesterday (I can not pinpoint the exact time it last worked). Any suggestions as to what I should be looking at? Oh, yes, the passphrases are old, but I tried replacing with new ones and there was no difference to this problem and the insistence on the password. Please feel free to let me know what additional information might be helpful. Many thanks and best wishes, Ranjan _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
