(1) Network Basic Profiles Leavers Detc/Hostname.Hme0 Network Interface Name 3./etc/netmasks Network Mask 4./etc/inetd .conf Service Project Definition (2) Remote Access Command 1. Rlogin registered on the remote machine: rlogin hostname -l username 2. RSH executes a program in the remote machine: RSH hostname -l username ORDER 3. RCP Copy file command format between remote systems: RSH Host: filename filename (3) Access authentication related files When rlogin, RSH, RCP commands, several files are important to network security.
/ etc / passwd If the password file of the remote system has the registration of this support, otherwise the [-l] option must be used to indicate the different users.
$ HOME / .RHOSTS RLOGIN, RSH, RCP first checks the.rhosts file under the user's home directory, such as host and user are listed in the file, this user is a trusted host, no password can be logged in, such as remote authentication failed , Then inquiry password
/etc/.hosts.equiv effect is similar to .rhosts file, the user listened to the user for trusted users, can log in (except for superuser) (4) Network monitoring 1.RUsers Identification network User Command Format: RUSERS -LA 2.RUP Identification Network Host Command Format: RUP 3.PING Detection Host Connection Status Command Format: Ping [Hostname | IP Address] 4.spray ping Command Format is a low-level protocol, Spray uses high-level protocol commands Format: Spray Hostname 5.NetStat Displays various data structural command formats related to the network: NetStat - [R | I] n -r: Display Routing Information - I: Display Interface Information 6.Ifconfig Display Network Interface Command Format: ifconfig - A where LO0: Native Self-feedback Interface Le0: 10M Interface HME0: 100M Interface HME1: Second 100M Interface 7.NetStat Display Various Data Structure Command Formats related to Network: NetStat - [R | I] n -r: Display Routing Information -i: Display Interface Information 8.Route Routing Settings Command Format: Route [Add | Delete] Setting Network Routing DefaultRouter <- Default Static Routing 9.arp Reverse Resound Analysis Command Format: ARP - [A | S]
