Module 003 basic services

Engineered by Hackers. Presented by Professionals. Basic Services Module 00 H c vi n Công Ngh Thông Tin Bách ọ ệ ệ Khoa Objectives:  DNS  DHCP  Web  Mail  FTP Basic Services H c vi n Công Ngh Thông Tin Bách ọ ệ ệ Khoa Overview of Domain Name System DNS is a hierarchical, distributed database that contains mappings of DNS domain names to various types of data, such as IP addresses DNS is a hierarchical, distributed database that contains mappings of DNS domain names to various types of data, such as IP addresses DNS is the foundation of the Internet naming scheme and the foundation of an organization’s naming scheme DNS supports accessing resources by using alphanumeric names InterNIC is responsible for delegating administrative responsibility for portions of the domain namespace and for registering domain names H c vi n Công Ngh Thông Tin Bách ọ ệ ệ Khoa What Is a Domain Namespace? H c vi n Công Ngh Thông Tin Bách ọ ệ ệ Khoa Standards for DNS Naming The following characters are valid for DNS names: A-Z a-z 0-9 Hyphen (-) The underscore (_) is a reserved character H c vi n Công Ngh Thông Tin Bách ọ ệ ệ Khoa What Are the Components of a DNS Solution? H c vi n Công Ngh Thông Tin Bách ọ ệ ệ Khoa How Root Hint Works Root hints are DNS resource records stored on a DNS server that list the IP addresses for the DNS root servers Root hints are DNS resource records stored on a DNS server that list the IP addresses for the DNS root servers H c vi n Công Ngh Thông Tin Bách ọ ệ ệ Khoa What Are Resource Records and Record Types? H c vi n Công Ngh Thông Tin Bách ọ ệ ệ Khoa Why Use DHCP? H c vi n Công Ngh Thông Tin Bách ọ ệ ệ Khoa How DHCP Allocates IP Addresses [...]... authentication  20: data transfer Học viện Công Nghệ Thông Tin Bách Khoa Non-Essential Services and Protocols  Non-essential protocols should be disabled or turned off  Following is a list of services that shouldn’t be offered on your primary servers:  NETBIOS  Network File System (NFS)  X Windows services  R services, such as rlogin and rexec  Telnet  FTP  TFTP  NetMeeting  Remote control . Hackers. Presented by Professionals. Basic Services Module 00 H c vi n Công Ngh Thông Tin Bách ọ ệ ệ Khoa Objectives:  DNS  DHCP  Web  Mail  FTP Basic Services H c vi n Công Ngh Thông Tin. ệ Khoa Standards for DNS Naming The following characters are valid for DNS names: A-Z a-z 0-9 Hyphen (-) The underscore (_) is a reserved character H c vi n Công Ngh Thông Tin Bách ọ ệ ệ Khoa .  Non-essential protocols should be disabled or turned off  Following is a list of services that shouldn’t be offered on your primary servers:  NETBIOS  Network File System (NFS)  X Windows services  R