Installing and Managing Red Hat Enterprise Linux Sever & Solaris Install & manage LDAP Server, Manage LDAP users & permissions Configure & manage simple replication & replication with CAConfigure & manage NIS user migrate in LDAPConfigure & manage Kerberos Pxe-boot, kick start installation, FTP Server, DNS Server, Samba Server, Web ServerSquid – A Proxy ServerImplement Firewall for Incoming and Outgoing traffic, Site specific restrictionIP based authentication, Yahoo & other messenger restriction, Key Words restrictionJob scheduling through crontab.Send mail & Postfix – Mail Server Oracle 8i 9i 10g 11g R12 installation on Linux & solaris (Sparc) Implement SMTP, POP3 & IMAP authentication for remote users Forward one copy of incoming mail to AdminSend one copy of outgoing mail to AdminRAID & LVM Configuration, NIS SERVER, DHCP, web server (http), HTTPS.,tomcatUser and Group Management in Linux