更改默认端口后，无法使用LDAP帐户通过SSHlogin

我更改了CentOS7安装的ssh默认端口。但是我无法使用ldap帐户连接到服务器。我正在“连接被拒绝，并出现以下错误：

Nov 16 16:43:52 server sshd[26297]: PAM 2 more authentication failures; logname= uid=0 euid=0 tty=ssh ruser= rhost=localhost Nov 16 16:43:59 server sshd[26308]: Invalid user random2 from ::1 Nov 16 16:43:59 server sshd[26308]: input_userauth_request: invalid user random2 [preauth] Nov 16 16:44:04 server sshd[26308]: pam_unix(sshd:auth): check pass; user unknown Nov 16 16:44:04 server sshd[26308]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=localhost Nov 16 16:44:07 server sshd[26308]: Failed password for invalid user random2 from ::1 port 58711 ssh2

防火墙已closures，并且已经启用了非默认端口。

我不知道这个“无效用户”是什么意思，因为我可以清楚地看到他。

希望有人有一个想法。

提前致谢。

最真诚的

Twinhand

编辑1：nsswitch.conf

 passwd: files sss ldap shadow: files sss ldap group: files sss ldap

/etc/openldap/ldap.conf中

 URI ldap://servername.example.com/ BASE dc=example,dc=com TLS_REQCERT allow

EDIT2

 ssh -vv -p 2431 random2@localhost OpenSSH_6.6.1, OpenSSL 1.0.1e-fips 11 Feb 2013 debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 56: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to localhost [::1] port 2431. debug1: Connection established. debug1: permanently_set_uid: 0/0 debug1: identity file /root/.ssh/id_rsa type -1 debug1: identity file /root/.ssh/id_rsa-cert type -1 debug1: identity file /root/.ssh/id_dsa type -1 debug1: identity file /root/.ssh/id_dsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa type -1 debug1: identity file /root/.ssh/id_ecdsa-cert type -1 debug1: identity file /root/.ssh/id_ed25519 type -1 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_6.6.1 debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1 debug1: match: OpenSSH_6.6.1 pat OpenSSH_6.6.1* compat 0x04000000 debug2: fd 3 setting O_NONBLOCK debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug2: kex_parse_kexinit: [email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1 debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,[email protected],[email protected],[email protected],[email protected],[email protected],ssh-ed25519,ssh-rsa,ssh-dss debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,[email protected],[email protected],[email protected],aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected] debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,[email protected],[email protected],[email protected],aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected] debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-md5,hmac-sha1,[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-md5,hmac-sha1,[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: none,[email protected],zlib debug2: kex_parse_kexinit: none,[email protected],zlib 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: [email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1 debug2: kex_parse_kexinit: ssh-rsa,ecdsa-sha2-nistp256,ssh-ed25519 debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,[email protected],[email protected],[email protected],aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected] debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,[email protected],[email protected],[email protected],aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected] debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-md5,hmac-sha1,[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-md5,hmac-sha1,[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: none,[email protected] debug2: kex_parse_kexinit: none,[email protected] 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: setup [email protected] debug1: kex: server->client aes128-ctr [email protected] none debug2: mac_setup: setup [email protected] debug1: kex: client->server aes128-ctr [email protected] none debug1: kex: [email protected] need=16 dh_need=16 debug1: kex: [email protected] need=16 dh_need=16 debug1: sending SSH2_MSG_KEX_ECDH_INIT debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: Server host key: ECDSA XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX debug1: Host '[localhost]:2431' is known and matches the ECDSA host key. debug1: Found key in /root/.ssh/known_hosts:1 debug1: ssh_ecdsa_verify: signature correct debug2: kex_derive_keys debug2: set_newkeys: mode 1 debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug2: set_newkeys: mode 0 debug1: SSH2_MSG_NEWKEYS received debug1: Roaming not allowed by server debug1: SSH2_MSG_SERVICE_REQUEST sent debug2: service_accept: ssh-userauth debug1: SSH2_MSG_SERVICE_ACCEPT received 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)), debug1: Authentications that can continue: publickey,password debug1: Next authentication method: publickey debug1: Trying private key: /root/.ssh/id_rsa debug1: Trying private key: /root/.ssh/id_dsa debug1: Trying private key: /root/.ssh/id_ecdsa debug1: Trying private key: /root/.ssh/id_ed25519 debug2: we did not send a packet, disable method debug1: Next authentication method: password random2@localhost's password: debug2: we sent a password packet, wait for reply debug1: Authentications that can continue: publickey,password Permission denied, please try again. random2@localhost's password:

编辑2：

 Nov 18 17:30:01 peacock systemd: Created slice user-0.slice. Nov 18 17:30:01 peacock systemd: Starting Session 329 of user root. Nov 18 17:30:01 peacock systemd: Started Session 329 of user root. Nov 18 17:30:01 peacock nslcd[2917]: [45d5c5] <passwd="root"> ldap_result() failed: No such object Nov 18 17:30:01 peacock nslcd[2917]: [16f79a] <group/member="root"> ldap_result() failed: No such object Nov 18 17:30:01 peacock nslcd[2917]: [16f79a] <group/member="root"> ldap_result() failed: No such object Nov 18 17:30:01 peacock nslcd[2917]: [c8c7c2] <group/member="gdm"> ldap_result() failed: No such object Nov 18 17:30:01 peacock nslcd[2917]: [c8c7c2] <group/member="gdm"> ldap_result() failed: No such object Nov 18 17:30:01 peacock nslcd[2917]: [f31d87] <group/member="gdm"> ldap_result() failed: No such object

这是什么？我的整个/ var / log /消息充满了。

它看起来像你正在尝试使用本地passwd文件而不是LDAP服务器进行身份validation。

在客户端机器上检查：

/etc/ldap.conf和/etc/openldap/ldap.conf – > LDAP服务器和基本search必须正确定义。
/etc/nsswitch.conf – >search密码，组和影子定义。他们必须包括“ldap”：

 passwd: ldap compat group: ldap compat shadow: ldap compat

增加冗长度有很大帮助。使用-v -vv -vvv开关连接并查找身份validation信息：

 ssh -vv user@host

那么这不是一个真正的解决scheme，但它以某种方式解决了。正如我昨天尝试了不同的事情来解决这个问题，我不小心删除了/ etc与我的服务器死亡，但我只是从头开始重新安装它。用同样的文件和相同的程序以相同的方式设置slapd。它的工作。我不知道问题是什么，但是谢谢你的帮助。