Syslog QUOTA NFS Samba SSH TELNET SQUID BIND SENDMAIL POSTFIX PROXY HTTPD FTP DHCP YP LDAP PPPD NTP MRTG TRIPWIRE PAM Password Security Encryption Process security firewall xinetd, tcp_wrappers iptables security tools PortForwarding selinux ======================================================================== Libarary source | compiler | Object code | linkear | staticlibrary,Dynamic library,statically linked executable code, Dynamically linked executablecode | loader […]
The Future OF User Interfaces
Citation of Interesting article written by Cameron Chapman about the Future of User Interfaces. User interfaces—the way we interact with our technologies—have evolved a lot over the years. From the original punch cards and printouts to monitors, mouses, and keyboards, all the way to the track pad, voice recognition, and interfaces designed to make it […]
System integrity using Files, Permissions, Processes, Root and Sudo
To be a good in system administration, we have to understand the basics of files, processes and permissions of our Linux/Unix hosts. Therefore, in this article, we will cover the basic stuffs regarding files, processes, permissions, the SUPERUSER “root” account and the sudo program. Every file and process on a Linux/Unix system is owned by […]
RMAN BACKUP AND RECOVERY PRACTICE WITH RAC AND ASM
Check the configuration parameters of Rman. Connect to Rman without catalog. Controlfile is used to store Rman metadata: You need to set the environment before invoking Rman: ORACLE_BASE=/u01/app/oracle ORACLE_HOME=$ORACLE_BASE/product/11.1.0/db_1 ORA_CRS_HOME=/u01/app/crs ORACLE_PATH= $ORACLE_BASE/common/oracle/sql:.:$ORACLE_HOME/rdbms/admin ORACLE_SID=mars1 $rman target / nocatalog RMAN> show all; RMAN>exit; ———————————– rmanbackupconf.sh rman target / nocatalog <<EOF CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # […]
Configure Cisco Router
Configure Password ——————– 1. Change to global mode: config t 2. To Set enable password: enable password “chicagotech’ 3. To set secret password: enable secret “ms-mvp” Note: 1: Enable secret password is encrypted by default. Enable password is not. 2: If both enable secret and enable password are specified, the enable secret overrides the enable […]