Introduction: How to Use SSH2 on Linux

Article Title: to talk about how to use SSH2 on Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
　　 Software acquisition
1 RedHat 6.2
　　
Http://freesoft.online.sh.cn/
　　
2 SSH2 Server
　　
Rpm: ssh-commercial-server-2.2.0-2nox.i386.rpm
Source: ssh-2.2.0.tar.gz
　　
Http://www.ssh.com
　　
3 SSH2 Client
Rpm: ssh-commercial-workstation-2.2.0-2.i386.rpm
Http://www.ssh.com
　　
　　 Software Installation
Description: Remote Host Name: Remote (Server) 192.168.1.222
Local Host Name: Local (Client) 192.168.1.223
　　
1 install Redhat6.2
　　
2 install SSH2 Server (Remote Host)
　　
Use RPM
[Root @ Remote root] # rpm-ivh ssh-commercial-server-2.2.0-2nox.i386.rpm
　　
Use SOURCE
　　
[Root @ Remote root] # tar xzvf ssh-2.2.0.tar.gz
# Cd ssh-2.2.0
#./Configure
# Make
# Make install
　　
　　
3 install SSH2 Clinet (Local Host)
　　
[Root @ Local root] # rpm-ivh ssh-commercial-workstation-2.2.0-2.i386.rpm
　　
　　 System Configuration
1. Start sshd on Remote Host
[Root @ Remote root]/usr/loca/sbin/sshd2
　　
2. Add a user account on the Local Host, such as bill.
[Root @ Local root] useradd bill
[Root @ Local root] passwd bill
　　
3. Create a public and private key for the user on the Client
Log on to the Local Host using bill
[Bill @ Local local] $ ssh-keygen
Generating 1024-bit dsa key pair
9 o. oOo... oOo. o
Key generated.
1024-bit dsa, created by bill @ Local Wed Sep 23 07:11:02 1998
Passphrase: enter up to 20 characters
Again: Repeated input
Private key saved to/home/bill/. ssh2/id_dsa_1024_a
　　
4. Create a user authentication file on the Client
Log on to the Local Host using bill
[Bill @ Local local] $ cd ~ /. Ssh2
[Bill @ Local local] $ echo "IdKey id_dsa_1024_a"> identification
　　
4. Add the user account used for Remote login on the Remote Host, such as bill
[Root @ Remote root] # useradd bill
[Root @ Remote root] # passwd bill
　　
5. log on to the Remote Host with bill
[Bill @ Remote local] $ ssh-keygen
Generating 1024-bit dsa key pair
9 o. oOo... oOo. o
Key generated.
1024-bit dsa, created by bill @ Local Wed Sep 23 07:11:02 1998
Passphrase: enter up to 20 characters
Again: Repeated input
Private key saved to/home/bill/. ssh2/id_dsa_1024_a
　　
6. log on to the Local Host using bill
[Bill @ Local local] $ cd ~
[Bill @ Local local] $ cp./. ssh2/id_dsa_1024_a.pub Local. pub
　　
Use bill ftp Remote Host
[Bill @ local bill] $ ftp local
　　
Ftp> LCD ~ /. Ssh2
Ftp> cd ~ /. Ssh2
Ftp> put Local. pub
Ftp> bye
　　
Use bill to Telnet Remote Host
[Bill @ local bill] $ telnet local
[Bill @ remote bill] $ cd ~ /. Ssh2
[Bill @ remote. ssh2] $ echo "Key Local. pub"> authorization
　　
　　 Test
In the Local Host
　　
[Bill @ local bill] $ ssh Remote
Passphrase for key "/home/bill/. ssh2/id_dsa_1024_a" with comment "1024-bit d: Enter the previous characters
Authentication successful.
　　
[Bill @ Remote bill] $ netstat-n
Active Internet connections (w/o servers)
Proto Recv-Q Send-Q Local Address Foreign Address State
Tcp 0 252 192.168.1.222: 22 192.168.1.223: 3532 ESTABLISHED
Active UNIX domain sockets (w/o servers)
Proto RefCnt Flags Type State I-Node Path
For unix 9 [] DGRAM 436/dev/log
Unix 0 [] stream connected 177 @ 00000016
Unix 0 [] DGRAM 771
Unix 0 [] DGRAM 753
Unix 0 [] DGRAM 672
Unix 0 [] DGRAM 636
Unix 0 [] DGRAM 590
Unix 0 [] DGRAM 575
Unix 0 [] DGRAM 523
Unix 0 [] DGRAM 458
Unix 0 [] DGRAM 446
　　
[Bill @ local bill] $ sftp Remote
Passphrase for key "/home/bill/. ssh2/id_dsa_1024_a" with comment "1024-bit d:
Sftp> ls-l
Drwxr-xr-x 5 bill 4096 Jul 12 Desktop/
-Rwxr-xr-x 1 bill 333 Jul 12. emacs *
-Rw-r -- 1 bill 24 Jul 12 6:29. bash_logout
-Rw-r -- 1 bill 230 Jul 12. bash_profile
-Rw-r -- 1 bill 124 Jul 12. bashrc
Drwxr-xr-x 3 bill 4096 Jul 12. kde/
-Rw-r -- 1 bill 435 Jul 12. kderc
-Rw-r -- 1 bill 3394 Jul 12. screenrc
-Rw ------- 1 bill 316 Jul 12. bash_history
Drwxr-xr-x 3 bill 4096 Jul 12. ssh2/
Sftp>