По мотивам продолжения проблемы #18183 Не работает прозрачная аутентификация с сетевыми пользователями (не присутствующими в /etc/passwd): [mastersin@valhalla ~]$ klist Ticket cache: FILE:/tmp/krb5cc_503 Default principal: mastersin@SARATOV.ETERSOFT.RU Valid starting Expires Service principal 04/24/09 22:42:30 04/25/09 08:43:17 krbtgt/SARATOV.ETERSOFT.RU@SARATOV.ETERSOFT.RU renew until 04/24/09 22:42:30 04/24/09 22:42:40 04/25/09 08:43:17 host/server.saratov.etersoft.ru@SARATOV.ETERSOFT.RU renew until 04/24/09 22:42:30 [mastersin@valhalla ~]$ ssh server Connection closed by 192.168.33.1 [root@server ~]# tail /var/log/messages ...... Apr 24 22:51:32 server sshd[11352]: Connection from 192.168.33.5 port 38963 Apr 24 22:51:33 server sshd[11352]: Failed none for mastersin from 192.168.33.5 port 38963 ssh2 Apr 24 22:51:33 server sshd[11355]: Postponed gssapi-with-mic for mastersin from 192.168.33.5 port 38963 ssh2 Apr 24 22:51:33 server sshd[11352]: Authorized to mastersin, krb5 principal mastersin@SARATOV.ETERSOFT.RU (krb5_kuserok) Apr 24 22:51:33 server sshd[11352]: Failed gssapi-with-mic for mastersin from 192.168.33.5 port 38963 ssh2 Apr 24 22:51:33 server sshd[11355]: fatal: Access denied for user mastersin by PAM account configuration В параметрах ssh_config клиента включено: GSSAPIAuthentication yes В параметрах sshd_config сервера включено: GSSAPIAuthentication yes GSSAPICleanupCredentials yes При подключении в DEBUG режиме можно увидеть, что проблема в вызове pam_acct_mgmt() из auth-pam.c: do_pam_account()
Отдельно привожу DEBUG вариант: $ ssh -v server -p2222 OpenSSH_5.2p1, OpenSSL 0.9.8k 25 Mar 2009 debug1: Reading configuration data /etc/openssh/ssh_config debug1: Applying options for * debug1: Connecting to server [192.168.33.1] port 2222. debug1: Connection established. debug1: identity file /home/mastersin/.ssh/id_rsa type -1 debug1: identity file /home/mastersin/.ssh/id_dsa type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.2 debug1: match: OpenSSH_5.2 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.2 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes256-ctr hmac-md5 none debug1: kex: client->server aes256-ctr hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<4096<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: checking without port identifier debug1: Host 'server' is known and matches the RSA host key. debug1: Found key in /home/mastersin/.ssh/known_hosts:1 debug1: found matching key w/out port debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,gssapi-with-mic,password debug1: Next authentication method: gssapi-with-mic Connection closed by 192.168.33.1 [root@server ~]# /usr/sbin/sshd -ddDp2222 debug2: load_server_config: filename /etc/openssh/sshd_config debug2: load_server_config: done config len = 372 debug2: parse_server_config: config /etc/openssh/sshd_config len 372 debug1: sshd version OpenSSH_5.2p1 debug1: read PEM private key done: type RSA debug1: Checking fingerprint d8:e3:2a:eb:3c:e7:2e:43:52:32:70:0c:6e:f3:5a:b8 using blacklist file /etc/openssh/blacklist open blacklist file /etc/openssh/blacklist failed: No such file or directory Unable to check blacklist for host key d8:e3:2a:eb:3c:e7:2e:43:52:32:70:0c:6e:f3:5a:b8 debug1: private host key: #0 type 1 RSA debug1: read PEM private key done: type DSA debug1: Checking fingerprint 96:80:0d:89:30:a2:a5:39:5a:4e:74:d6:69:82:bf:cf using blacklist file /etc/openssh/blacklist open blacklist file /etc/openssh/blacklist failed: No such file or directory Unable to check blacklist for host key 96:80:0d:89:30:a2:a5:39:5a:4e:74:d6:69:82:bf:cf debug1: private host key: #1 type 2 DSA debug1: rexec_argv[0]='/usr/sbin/sshd' debug1: rexec_argv[1]='-ddDp2222' debug2: fd 3 setting O_NONBLOCK debug1: Bind to port 2222 on 0.0.0.0. Server listening on 0.0.0.0 port 2222. socket: Address family not supported by protocol debug1: Server will not fork when running in debugging mode. debug1: rexec start in 4 out 4 newsock 4 pipe -1 sock 7 debug1: inetd sockets after dupping: 3, 3 Connection from 192.168.33.5 port 52448 debug1: Client protocol version 2.0; client software version OpenSSH_5.2 debug1: match: OpenSSH_5.2 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.2 debug2: fd 3 setting O_NONBLOCK debug1: permanently_set_uid: 108/115 debug1: list_hostkey_types: ssh-rsa,ssh-dss debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1 debug2: kex_parse_kexinit: ssh-rsa,ssh-dss debug2: kex_parse_kexinit: aes256-ctr,aes192-ctr,aes128-ctr,arcfour256,arcfour128,blowfish-cbc,aes256-cbc,aes192-cbc,aes128-cbc,3des-cbc,cast128-cbc,arcfour,rijndael-cbc@lysator.liu.se debug2: kex_parse_kexinit: aes256-ctr,aes192-ctr,aes128-ctr,arcfour256,arcfour128,blowfish-cbc,aes256-cbc,aes192-cbc,aes128-cbc,3des-cbc,cast128-cbc,arcfour,rijndael-cbc@lysator.liu.se debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: none,zlib@openssh.com debug2: kex_parse_kexinit: none,zlib@openssh.com debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: first_kex_follows 0 debug2: kex_parse_kexinit: reserved 0 debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1 debug2: kex_parse_kexinit: ssh-rsa,ssh-dss debug2: kex_parse_kexinit: aes256-ctr,aes192-ctr,aes128-ctr,arcfour256,arcfour128,blowfish-cbc,aes256-cbc,aes192-cbc,aes128-cbc,3des-cbc,cast128-cbc,arcfour,rijndael-cbc@lysator.liu.se debug2: kex_parse_kexinit: aes256-ctr,aes192-ctr,aes128-ctr,arcfour256,arcfour128,blowfish-cbc,aes256-cbc,aes192-cbc,aes128-cbc,3des-cbc,cast128-cbc,arcfour,rijndael-cbc@lysator.liu.se debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: first_kex_follows 0 debug2: kex_parse_kexinit: reserved 0 debug2: mac_setup: found hmac-md5 debug1: kex: client->server aes256-ctr hmac-md5 none debug2: mac_setup: found hmac-md5 debug1: kex: server->client aes256-ctr hmac-md5 none debug2: Network child is on pid 11502 debug1: SSH2_MSG_KEX_DH_GEX_REQUEST received debug1: SSH2_MSG_KEX_DH_GEX_GROUP sent debug2: monitor_read: 0 used once, disabling now debug2: dh_gen_key: priv key bits set: 250/512 debug2: bits set: 2063/4096 debug1: expecting SSH2_MSG_KEX_DH_GEX_INIT debug2: bits set: 2085/4096 debug2: monitor_read: 4 used once, disabling now debug1: SSH2_MSG_KEX_DH_GEX_REPLY sent debug2: kex_derive_keys debug2: set_newkeys: mode 1 debug2: cipher_init: set keylen (16 -> 32) debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug2: set_newkeys: mode 0 debug2: cipher_init: set keylen (16 -> 32) debug1: SSH2_MSG_NEWKEYS received debug1: KEX done debug1: userauth-request for user mastersin service ssh-connection method none debug1: attempt 0 failures 0 debug2: parse_server_config: config reprocess config len 372 debug2: monitor_read: 6 used once, disabling now debug2: input_userauth_request: setting up authctxt for mastersin debug2: input_userauth_request: try method none debug1: PAM: initializing for "mastersin" debug1: PAM: setting PAM_RHOST to "valhalla.saratov.etersoft.ru" debug1: PAM: setting PAM_TTY to "ssh" debug2: monitor_read: 45 used once, disabling now debug2: monitor_read: 3 used once, disabling now Failed none for mastersin from 192.168.33.5 port 52448 ssh2 debug1: userauth-request for user mastersin service ssh-connection method gssapi-with-mic debug1: attempt 1 failures 0 debug2: input_userauth_request: try method gssapi-with-mic Postponed gssapi-with-mic for mastersin from 192.168.33.5 port 52448 ssh2 debug1: Got no client credentials Authorized to mastersin, krb5 principal mastersin@SARATOV.ETERSOFT.RU (krb5_kuserok) debug1: do_pam_account: called Failed gssapi-with-mic for mastersin from 192.168.33.5 port 52448 ssh2 sshd: Access denied for user mastersin by PAM account configuration debug1: do_cleanup debug1: do_cleanup debug1: PAM: cleanup [root@server ~]# id mastersin uid=65541(mastersin) gid=65537(netadmins) groups=65537(netadmins),2(daemon),10(wheel),100(users),109(fuse),503(vboxusers),528(admins) [root@server ~]# getent passwd mastersin mastersin:x:65541:65537:Evgeny Sinelnikov:/home/remote/mastersin:/bin/bash
Привожу также конфиг PAM: [root@server ~]# cat /etc/pam.d/sshd #%PAM-1.0 auth required pam_userpass.so auth include system-auth-use_first_pass auth required pam_nologin.so session required pam_loginuid.so account include system-auth password include system-auth session include system-auth [root@server ~]# cat /etc/pam.d/system-auth #%PAM-1.0 auth sufficient pam_tcb.so shadow fork prefix=$2a$ count=8 nullok auth requisite pam_succeed_if.so uid >= 500 quiet auth required pam_krb5.so use_first_pass account sufficient pam_tcb.so shadow fork account required pam_krb5.so password required pam_passwdqc.so config=/etc/passwdqc.conf password sufficient pam_tcb.so use_authtok shadow fork prefix=$2a$ count=8 nullok write_to=tcb password requisite pam_succeed_if.so uid >= 500 quiet #password required pam_krb5.so use_authtok session optional pam_tcb.so session optional pam_krb5.so #session required pam_mktemp.so session required pam_limits.so session required pam_mkhomedir.so silent skel=/etc/skel umask=0022 [root@server ~]# cat /etc/pam.d/system-auth-use_first_pass #%PAM-1.0 auth sufficient pam_tcb.so shadow fork prefix=$2a$ count=8 nullok use_first_pass auth requisite pam_succeed_if.so uid >= 500 quiet auth required pam_krb5.so use_first_pass password sufficient pam_tcb.so use_authtok shadow fork prefix=$2a$ count=8 nullok write_to=tcb password requisite pam_succeed_if.so uid >= 500 quiet password required pam_krb5.so use_authtok
gssapi это не совсем моя епархия, попробуйте разобраться сами.
Уже давно работает.
