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telnet是客户端telnet-server是服务端[root@zz ~]# yum list all telnet*Loaded plugins: fastestmirror, refresh-packagekit, securityLoading mirror speeds from cached hostfileAvailable Packagestelnet.x86_64 1:0.17-48.el6 CDtelnet-server.x86_64 1:0.17-48.el6 CD[root@zz ~]#
有点奇葩[root@qq ~]# chkconfig telnet on[root@qq ~]# service xinetd restartStopping xinetd: [FAILED]Starting xinetd: [ OK ][root@qq ~]# [root@qq ~]# ss -tnl | grep :23LISTEN 0 64 :::23 :::* [root@qq ~]#
[root@zz ~]# telnet 10.201.106.129Trying 10.201.106.129...Connected to 10.201.106.129.Escape character is '^]'.CentOS release 6.6 (Final)Kernel 2.6.32-504.el6.x86_64 on an x86_64login: qqPassword: Last login: Thu Jul 28 15:50:28 from 10.201.106.1[qq@qq ~]$ su -Password: [root@qq ~]# ifconfig[root@qq ~]# ss -tnState Recv-Q Send-Q Local Address:Port Peer Address:Port ESTAB 0 0 10.201.106.129:23 10.201.106.128:39829 ESTAB 0 52 10.201.106.129:22 10.201.106.1:52513 ESTAB 0 0 10.201.106.129:23 10.201.106.1:55147
[root@qq ~]# ssh root@10.201.106.129root@10.201.106.129's password: Last login: Thu Jul 28 21:11:53 2016 from 10.201.106.129[root@qq ~]# exitlogoutConnection to 10.201.106.129 closed.[root@qq ~]# [root@qq ~]# ssh -l root 10.201.106.129root@10.201.106.129's password: Last login: Thu Jul 28 21:16:25 2016 from 10.201.106.129[root@qq ~]#
[root@qq ~]# uname -r2.6.32-504.el6.x86_64[root@qq ~]# uname -sLinux
[root@zz ~]# ssh root@10.201.106.128 'hostname'root@10.201.106.128's password: qq[root@zz ~]# hostnamezz[root@zz ~]#
[root@zz ~]# vim /etc/ssh/ssh_config Host * GSSAPIAuthentication yes StrictHostKeyChecking no
[root@zz .ssh]# ssh-keygen -t rsa Generating public/private rsa key pair.Enter file in which to save the key (/root/.ssh/id_rsa): Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /root/.ssh/id_rsa.Your public key has been saved in /root/.ssh/id_rsa.pub.The key fingerprint is:e5:7f:8a:b4:b6:24:c3:68:77:a8:59:24:e1:e9:8c:b7 root@zzThe key's randomart image is:+--[ RSA 2048]----+| || || . . || . o o || + S . || + = . . || . * B + . . || o * *.o o || E .+.. |+-----------------+[root@zz .ssh]# id_rsa：私钥；id_rsa.pub：公钥[root@zz .ssh]# ls id_rsa id_rsa.pub known_hosts[root@zz .ssh]# 或者 -P：空密码；[root@zz .ssh]# ssh-keygen -t rsa -P '' -f '/root/.ssh/id_rsa'Generating public/private rsa key pair.Your identification has been saved in /root/.ssh/id_rsa.Your public key has been saved in /root/.ssh/id_rsa.pub.The key fingerprint is:87:bf:22:54:b9:1a:f1:3a:41:ed:7c:b7:59:9f:2b:81 root@zzThe key's randomart image is:+--[ RSA 2048]----+| || || . . || o +. || . *S.. . || + =o.E... || . = ... +...|| = . .o. ..|| o .. ...|+-----------------+[root@zz .ssh]#
[root@zz .ssh]# ssh-copy-id -i id_rsa.pub root@10.201.106.128root@10.201.106.128's password: Now try logging into the machine, with "ssh 'root@10.201.106.128'", and check in: .ssh/authorized_keysto make sure we haven't added extra keys that you weren't expecting.[root@zz .ssh]# [root@qq ~]# cd .ssh/[root@qq .ssh]# lsauthorized_keys[root@qq .ssh]# cat authorized_keys ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAtq90JaSmELfUUbf/Ou9mawVRHZ2u4wUCjdu+7qyeMCeHu2QxRkS2pfvy806RA/BHzDvKdFfnsSBBa9phfucKOF7Z6SqCr7T9S+wTiqht1OStMYAOUPRWV911GSk4TJWJbL6x/Hq2q9dKcFjLVD3CMpu1AXM4K3VTr7MYwF9LNjhHVwFfvsNzIyVyEWFUkbfjOs/xlv1EWqiDwVQHrnWdgPdUu0E4JkU70A0yEPnMDvfNp4nPbeC6taXy+/RatHEOS45VlBhPEmhmDAzP5cE4Woi0QSAa6kDGA2UzUgkAtyFqcN0UapGzA1aTgl/+6eXDoP5fBU3QSUhdsN6ugzQMiw== root@zz[root@qq .ssh]# 登陆测试：无须密码直接就可以登录了；[root@zz .ssh]# ssh root@10.201.106.128Last login: Sat Jul 30 15:51:25 2016 from 10.201.106.1[root@qq ~]# 需要密码，远程执行命令；[root@zz .ssh]# ssh root@10.201.106.129 'ifconfig'root@10.201.106.129's password: [root@zz .ssh]# ssh root@10.201.106.128 'ifconfig'eth1 Link encap:Ethernet HWaddr 00:0C:29:4E:AF:24 inet addr:10.201.106.128 Bcast:10.201.106.255 Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fe4e:af24/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:36788 errors:0 dropped:0 overruns:0 frame:0 TX packets:28018 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:24669470 (23.5 MiB) TX bytes:12170441 (11.6 MiB)lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:1288 errors:0 dropped:0 overruns:0 frame:0 TX packets:1288 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:126326 (123.3 KiB) TX bytes:126326 (123.3 KiB)[root@zz .ssh]#
xshell-工具-新建用户密钥生成向导生成密钥，将公钥复制到linux系统的用户目录/.ssh/authorized_key文件里面；登录测试：注意选择刚才生成的私钥登录[c:\~]$ ssh root@10.201.106.128Connecting to 10.201.106.128:22...Connection established.To escape to local shell, press 'Ctrl+Alt+]'.Last login: Sat Jul 30 15:52:30 2016 from 10.201.106.129
[root@zz ~]# scp root@10.201.106.129:/etc/fstab /tmp/fstab.txtThe authenticity of host '10.201.106.129 (10.201.106.129)' can't be established.RSA key fingerprint is 20:97:23:34:df:77:2a:91:ee:bf:ac:bd:fe:3d:35:38.Are you sure you want to continue connecting (yes/no)? yesWarning: Permanently added '10.201.106.129' (RSA) to the list of known hosts.root@10.201.106.129's password: fstab 100% 1369 1.3KB/s 00:00 [root@zz ~]# cat /tmp/fstab.txt ## /etc/fstab# Created by anaconda on Thu Jul 28 00:37:31 2016## Accessible filesystems, by reference, are maintained under '/dev/disk'# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info#UUID=01c53735-f7c4-4294-a944-e69df17ab9cd / ext4 defaults 1 1
[root@zz ~]# scp /root/test.txt root@10.201.106.129:/tmp/root@10.201.106.129's password: test.txt 100% 68 0.1KB/s 00:00 [root@zz ~]# [root@qq ~]# cat /tmp/test.txt 888888888888888888888888888888888999999999999999999999999999999999[root@qq ~]#
[root@zz ~]# sftp root@10.201.106.129Connecting to 10.201.106.129...root@10.201.106.129's password: sftp> sftp> sftp> lsanaconda-ks.cfg bin bind-9.10.4-P2 bind-9.10.4-P2.tar.gz install.log install.log.syslog test sftp> cd /etcsftp> lsConsoleKit DIR_COLORS DIR_COLORS.256color DIR_COLORS.lightbgcolor NetworkManager Trolltech.conf X11 abrt acpi adjtime
[root@zz ~]# rpm -q opensshopenssh-5.3p1-117.el6.x86_64
[root@qq ~]# ls /etc/ssh/moduli ssh_host_dsa_key ssh_host_key.pubssh_config ssh_host_dsa_key.pub ssh_host_rsa_keysshd_config ssh_host_key ssh_host_rsa_key.pub[root@qq ~]#
[root@qq ~]# tail /var/log/secure Jul 29 06:22:39 qq sshd[55357]: pam_unix(sshd:session): session closed for user rootJul 29 06:24:30 qq sshd[55376]: Accepted password for root from 10.201.106.128 port 41228 ssh2Jul 29 06:24:31 qq sshd[55376]: pam_unix(sshd:session): session opened for user root by (uid=0)Jul 29 06:24:31 qq sshd[55376]: subsystem request for sftpJul 29 06:27:35 qq sshd[55376]: Received disconnect from 10.201.106.128: 11: disconnected by userJul 29 06:27:35 qq sshd[55376]: pam_unix(sshd:session): session closed for user rootJul 29 06:44:52 qq sshd[55439]: Accepted password for root from 10.201.106.1 port 52071 ssh2Jul 29 06:44:52 qq sshd[55439]: pam_unix(sshd:session): session opened for user root by (uid=0)Jul 29 06:46:50 qq sshd[55470]: Accepted password for root from 10.201.106.1 port 52104 ssh2Jul 29 06:46:50 qq sshd[55470]: pam_unix(sshd:session): session opened for user root by (uid=0)[root@qq ~]# ll /var/log//secure -rw-------. 1 root root 14122 Jul 29 06:46 /var/log//secure[root@qq ~]#
1、登录服务器的服务器界面，开启超级终端；2、带-X选项登录远程服务器：ssh -X root@10.201.106.1293、在远程服务器执行 xcl命令，打开时钟；
[root@qq ~]# vim /etc/ssh/sshd_config Port 22222[root@qq ~]# service sshd restartStopping sshd: [ OK ]Starting sshd: 登录测试[root@zz ~]# ssh 10.201.106.129 -p 22222root@10.201.106.129's password: Last login: Fri Jul 29 06:46:50 2016 from 10.201.106.1[root@qq ~]#
转载于:https://blog.51cto.com/zhongle21/2091436