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Lyor Goldstein commented on SSHD-941: ------------------------------------- {quote} With dhg keysize workaround, connection with IOS only has 50/50 chance of succeeding. {quote} I find that very strange - please make sure that you initialize the value +before+ starting the client - as part of your _main_ code. For that matter, I recommend calling +explicitly+ {{SecurityUtils#setMaxDHGroupExchangeKeySize}} in the code and not rely on the system property. > mina ssh client times out connecting with IOS 15.2 > -------------------------------------------------- > > Key: SSHD-941 > URL: https://issues.apache.org/jira/browse/SSHD-941 > Project: MINA SSHD > Issue Type: Bug > Affects Versions: 2.0.0 > Reporter: Yuefeng > Assignee: Lyor Goldstein > Priority: Major > > Other device is Cisco IOS 15.2 - > IOS-15#show version > Cisco IOS Software, Linux Software (I86BI_LINUXL2-ADVENTERPRISEK9-M), Version > 15.2(CML_NIGHTLY_20180510)FLO_DSGS7, EARLY DEPLOYMENT DEVELOPMENT BUILD, > synced to V152_6_0_81_E > > apache.sshd always times out connecting to this device - > > {code:java} > 2019-09-12 20:42:30.559Z [sshd-SshClient[4ae0d26a]-nio2-thread-15] DEBUG > o.a.s.c.session.ClientSessionImpl:68 - Client session created: > Nio2Session[local=/10.10.20.1:41950, remote=/10.10.20.25:22] > 2019-09-12 20:42:30.559Z [sshd-SshClient[4ae0d26a]-nio2-thread-15] DEBUG > o.a.s.c.s.ClientUserAuthService:101 - > ClientUserAuthService(ClientSessionImpl[null@/10.10.20.25:22]) client > methods: [publickey, keyboard-interactive, password] > 2019-09-12 20:42:30.559Z [sshd-SshClient[4ae0d26a]-nio2-thread-15] DEBUG > o.a.s.c.session.ClientSessionImpl:1569 - > sendIdentification(ClientSessionImpl[null@/10.10.20.25:22]): > SSH-2.0-SSHD-CORE-2.0.0 > 2019-09-12 20:42:30.560Z [sshd-SshClient[4ae0d26a]-nio2-thread-15] DEBUG > o.a.s.c.session.ClientSessionImpl:1716 - > sendKexInit(ClientSessionImpl[null@/10.10.20.25:22]) Send SSH_MSG_KEXINIT > 2019-09-12 20:42:30.560Z [collector-55326-2] DEBUG > o.a.s.c.s.ClientUserAuthService:150 - > auth(ClientSessionImpl[admin@/10.10.20.25:22])[ssh-connection] send > SSH_MSG_USERAUTH_REQUEST for 'none' > 2019-09-12 20:42:30.564Z [collector-55326-2] DEBUG > o.a.s.c.session.ClientSessionImpl:1110 - > writePacket(ClientSessionImpl[admin@/10.10.20.25:22])[SSH_MSG_USERAUTH_REQUEST] > Start flagging packets as pending until key exchange is done > 2019-09-12 20:42:30.612Z [sshd-SshClient[4ae0d26a]-nio2-thread-9] DEBUG > o.a.s.c.session.ClientSessionImpl:1653 - > doReadIdentification(ClientSessionImpl[admin@/10.10.20.25:22]) > line='SSH-2.0-Cisco-1.25' > 2019-09-12 20:42:30.612Z [sshd-SshClient[4ae0d26a]-nio2-thread-9] DEBUG > o.a.s.c.session.ClientSessionImpl:375 - > readIdentification(ClientSessionImpl[admin@/10.10.20.25:22]) Server version > string: SSH-2.0-Cisco-1.25 > 2019-09-12 20:42:50.565Z [collector-55326-2] WARN > c.forwardnetworks.client.web.a.b.e:181 - SSH auth failed: > DefaultAuthFuture[ssh-connection]: Failed to get operation result within > specified timeout: 20000 > org.apache.sshd.common.SshException: DefaultAuthFuture[ssh-connection]: > Failed to get operation result within specified timeout: 20000 > {code} > > ssh on linux has no problem connecting - > {code:java} > root@eve-ng:/opt/fwd/logs# ssh -vvvv admin@10.10.20.25 > OpenSSH_7.2p2 Ubuntu-4ubuntu2.8, OpenSSL 1.0.2g 1 Mar 2016 > debug1: Reading configuration data /etc/ssh/ssh_config > debug1: /etc/ssh/ssh_config line 19: Applying options for * > debug2: resolving "10.10.20.25" port 22 > debug2: ssh_connect_direct: needpriv 0 > debug1: Connecting to 10.10.20.25 [10.10.20.25] port 22. > debug1: Connection established. > debug1: permanently_set_uid: 0/0 > debug1: key_load_public: No such file or directory > debug1: identity file /root/.ssh/id_rsa type -1 > debug1: key_load_public: No such file or directory > debug1: identity file /root/.ssh/id_rsa-cert type -1 > debug1: key_load_public: No such file or directory > debug1: identity file /root/.ssh/id_dsa type -1 > debug1: key_load_public: No such file or directory > debug1: identity file /root/.ssh/id_dsa-cert type -1 > debug1: key_load_public: No such file or directory > debug1: identity file /root/.ssh/id_ecdsa type -1 > debug1: key_load_public: No such file or directory > debug1: identity file /root/.ssh/id_ecdsa-cert type -1 > debug1: key_load_public: No such file or directory > debug1: identity file /root/.ssh/id_ed25519 type -1 > debug1: key_load_public: No such file or directory > debug1: identity file /root/.ssh/id_ed25519-cert type -1 > debug1: Enabling compatibility mode for protocol 2.0 > debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.8 > debug1: Remote protocol version 2.0, remote software version Cisco-1.25 > debug1: match: Cisco-1.25 pat Cisco-1.* compat 0x60000000 > debug2: fd 3 setting O_NONBLOCK > debug1: Authenticating to 10.10.20.25:22 as 'admin' > debug3: hostkeys_foreach: reading file "/root/.ssh/known_hosts" > debug3: record_hostkey: found key type RSA in file /root/.ssh/known_hosts:9 > debug3: load_hostkeys: loaded 1 keys from 10.10.20.25 > debug3: order_hostkeyalgs: prefer hostkeyalgs: > ssh-rsa-cert-...@openssh.com,rsa-sha2-512,rsa-sha2-256,ssh-rsa > 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-sha...@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,ext-info-c > debug2: host key algorithms: > ssh-rsa-cert-...@openssh.com,rsa-sha2-512,rsa-sha2-256,ssh-rsa,ecdsa-sha2-nistp256-cert-...@openssh.com,ecdsa-sha2-nistp384-cert-...@openssh.com,ecdsa-sha2-nistp521-cert-...@openssh.com,ssh-ed25519-cert-...@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519 > debug2: ciphers ctos: > chacha20-poly1...@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-...@openssh.com,aes256-...@openssh.com,aes128-cbc,aes192-cbc,aes256-cbc,3des-cbc > debug2: ciphers stoc: > chacha20-poly1...@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-...@openssh.com,aes256-...@openssh.com,aes128-cbc,aes192-cbc,aes256-cbc,3des-cbc > debug2: MACs ctos: > umac-64-...@openssh.com,umac-128-...@openssh.com,hmac-sha2-256-...@openssh.com,hmac-sha2-512-...@openssh.com,hmac-sha1-...@openssh.com,umac...@openssh.com,umac-...@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1 > debug2: MACs stoc: > umac-64-...@openssh.com,umac-128-...@openssh.com,hmac-sha2-256-...@openssh.com,hmac-sha2-512-...@openssh.com,hmac-sha1-...@openssh.com,umac...@openssh.com,umac-...@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1 > debug2: compression ctos: none,z...@openssh.com,zlib > debug2: compression stoc: none,z...@openssh.com,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-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1 > debug2: host key algorithms: ssh-rsa > debug2: ciphers ctos: aes128-ctr,aes192-ctr,aes256-ctr > debug2: ciphers stoc: aes128-ctr,aes192-ctr,aes256-ctr > debug2: MACs ctos: hmac-sha1,hmac-sha1-96 > debug2: MACs stoc: hmac-sha1,hmac-sha1-96 > debug2: compression ctos: none > debug2: compression stoc: none > debug2: languages ctos: > debug2: languages stoc: > debug2: first_kex_follows 0 > debug2: reserved 0 > debug1: kex: algorithm: diffie-hellman-group-exchange-sha1 > debug1: kex: host key algorithm: ssh-rsa > debug1: kex: server->client cipher: aes128-ctr MAC: hmac-sha1 compression: > none > debug1: kex: client->server cipher: aes128-ctr MAC: hmac-sha1 compression: > none > debug3: send packet: type 34 > debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(2048<4096<8192) sent > debug3: receive packet: type 31 > debug1: got SSH2_MSG_KEX_DH_GEX_GROUP > debug2: bits set: 2030/4096 > debug3: send packet: type 32 > debug1: SSH2_MSG_KEX_DH_GEX_INIT sent > debug3: receive packet: type 33 > debug1: got SSH2_MSG_KEX_DH_GEX_REPLY > debug1: Server host key: ssh-rsa > SHA256:qb8x7Bb8Q3x5rtAC/s/zTeHyOGpwyLolpvIYcFIfrhk > debug3: hostkeys_foreach: reading file "/root/.ssh/known_hosts" > debug3: record_hostkey: found key type RSA in file /root/.ssh/known_hosts:9 > debug3: load_hostkeys: loaded 1 keys from 10.10.20.25 > debug1: Host '10.10.20.25' is known and matches the RSA host key. > debug1: Found key in /root/.ssh/known_hosts:9 > debug2: bits set: 2098/4096 > debug3: send packet: type 21 > debug2: set_newkeys: mode 1 > debug1: rekey 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 after 4294967296 blocks > debug2: key: /root/.ssh/id_rsa ((nil)) > debug2: key: /root/.ssh/id_dsa ((nil)) > debug2: key: /root/.ssh/id_ecdsa ((nil)) > debug2: key: /root/.ssh/id_ed25519 ((nil)) > debug3: send packet: type 5 > 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,keyboard-interactive,password > debug3: start over, passed a different list > publickey,keyboard-interactive,password > debug3: preferred > gssapi-keyex,gssapi-with-mic,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: Trying private key: /root/.ssh/id_rsa > debug3: no such identity: /root/.ssh/id_rsa: No such file or directory > debug1: Trying private key: /root/.ssh/id_dsa > debug3: no such identity: /root/.ssh/id_dsa: No such file or directory > debug1: Trying private key: /root/.ssh/id_ecdsa > debug3: no such identity: /root/.ssh/id_ecdsa: No such file or directory > debug1: Trying private key: /root/.ssh/id_ed25519 > debug3: no such identity: /root/.ssh/id_ed25519: No such file or directory > debug2: we did not send a packet, disable method > debug3: authmethod_lookup keyboard-interactive > debug3: remaining preferred: password > debug3: authmethod_is_enabled keyboard-interactive > debug1: Next authentication method: keyboard-interactive > debug2: userauth_kbdint > debug3: send packet: type 50 > debug2: we sent a keyboard-interactive packet, wait for reply > debug3: receive packet: type 60 > debug2: input_userauth_info_req > debug2: input_userauth_info_req: num_prompts 1 > Password: > {code} > > -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@mina.apache.org For additional commands, e-mail: dev-h...@mina.apache.org