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BMC Mainframe: z/OS Communications Server Part 2 - Implementing TCP/IP under z/OS

The course is developed and delivered by © RSM Technology.

This new, four-day course is the second part of the definitive z/OS Communications Server training programme. This course explains in detail how TCP/IP works in a z/OS environment. Installation, profile definition and implementation are all taught in depth. All versions of TCP/IP for z/OS are covered, along with all the servers. Additionally, all the essential and important configuration options are explained and examples are provided.

Extensive hands-on practical sessions, in which each student has their own system to work on, form the central part of the course. These sessions make up approximately 30% of the whole course. Each segment of the course also contains extensive review questions/exercises - thus ensuring that all students fully grasp each topic before moving on to the next.

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Course Abstract

Major release:

BMC Mainframe Infrastructure Platform Training

Recommended Prerequisites:

Good for:

System Programmers, Users

Course Delivery:

Instructor-Led Training (ILT) | 32 hours

Course Modules

  • TCP/IP Review
    • What is TCP/IP?
    • Why are we interested in TCP/IP?
    • What does TCP/IP comprise?
    • Internetworking principles
    • IPv4 addressing
    • IPv4 subnetting
    • IPv4 variable subnetting
    • Network Address Translation
    • One to One NAT
    • Network Address Port Translation (NAPT)
    • TCP/IP protocol stack
    • IPv4 Address Resolution Protocol
    • IPv4 Dynamic Host Configuration Protocol
    • Why IPv6?
    • IPv6 addressing
    • IPv6 prefixes and address types
    • Global unicast address format
    • Anycast address
    • Multicast address
    • Required host information
    • Port numbers
    • IPv4 Transport Protocol message formats
    • IPv4 Internet Protocol: message format, packet format, header format
    • Extension Headers
    • IPv6 Routing Header
    • IPv6 fragmentation header
    • IPv6 options header
    • Internet domain names
    • Internet domain name hierarchy
    • Common user application
    • Common system applications
  • An Overview of TCP/IP on z/OS
    • TCP/IP for z/OS
    • TCP/IP access to SNA applications
    • How the gateway works
    • SNA access to TCP/IP applications
    • Communications Storage Manager
    • Device connectivity and attachments
    • Direct vs indirect attachment
    • Direct attachment problem
    • Virtual IP addressing - the solution
    • Sharing attachments across LPARs
    • UNIX Systems Services considerations.
  • TCP/IP for z/OS Installation
    • UNIX Systems Services prerequisites
    • Security Server prerequisites
    • Communications storage manager
    • Datasets required
    • TCP/IP and TN3270 procedures
    • Required host information
    • Customising the DATA dataset
    • DATA dataset syntax
    • Association with the TCP/IP stack
    • Specifying the Host Name and Domain Name
    • Specifying the name server parameters
    • A typical DATA dataset
    • RESOLVER: procedure, files, other statements
    • CINET GLOBALTCPIPDATA
    • TCPIP.DATA search order
    • VTAM TRL Major Node
    • Servers and devices
    • HCD definitions
    • Sysplex distributor
    • z/OS libraries required
    • 'Must Have' reference manuals
    • Nice to Have' reference manuals
  • TCP/IP for z/OS - Command Overview
    • Available TCP/IP commands
    • The START and STOP commands
    • The MODIFY command
    • The DISPLAY command
    • The VARY command;
    • The OBEYFILE command
    • The NETSTAT and onetstat commands
    • NETSTAT command options
  • Basic Profile Definitions
    • Customising the PROFILE dataset
    • PROFILE dataset syntax
    • Device interface properties
    • Statements that define an interface
    • The basic DEVICE statement
    • The basic LINK statement
    • Defining LCS devices
    • Defining CLAW devices
    • OSAs, Hipersockets and Channel Attached Routers
    • OSA diagnostic device
    • QDIO and non-QDIO
    • OSA Express CHPID definitions
    • Adding an OSA Control Unit and device
    • Adding OSAD device
    • Hipersockets
    • Hipersockets definition
    • CHPID Type IQD
    • MTU sizes
    • Channel Attached Routers and Servers
    • Defining MPCPTP devices
    • Defining MPCIPA devices
    • The HOME statement
    • The START statement
    • INTERFACE - IPAQENET OSA-Express QDIO interfaces statement
    • Syntax for INTERFACE - IPAQENET OSAExpress QDIO
    • Syntax for INTERFACE -- IPAQIDIO HiperSockets interfaces statement
    • The routing statements
    • Subnetting - a reminder
    • The GATEWAY statement
    • The BEGINROUTES statement
    • The BSDROUTINGPARMS statement
    • Variable subnets and GATEWAY
    • Variable subnets and BEGINROUTES
    • Operational statements
  • VIPAs and Sysplex
    • VIPAs
    • Static VIPA
    • Dynamic VIPA
    • Virtual IP addressing - a reminder
    • Defining VIPA devices
    • Specifying the source IP address
    • Syntax for INTERFACE -- VIRTUAL interfaces statement
    • Examples of the INTERFACE statement for VIPA
    • IP solutions in a sysplex
    • Communication paths in a Sysplex
    • DynamicXCF transport choices
    • IUTSAMEH
    • XCF Groups and their usage
    • Display XCF groups
    • DYNAMICXCF
    • DYNAMICXCF & HiperSockets
    • Dynamic VIPA - introduction
    • Dynamic VIPA takeover
    • Stack-managed DVIPA
    • Non- disruptive dynamic VIPA takeback
    • Application-specific DVIPA
    • IOCTL or Command-Activated DVIPA
    • Dynamic VIPA statements
    • MODDVIPA (EZBXFDVP) utility
    • Dynamic VIPA usage
    • When does the DVIPA move?
    • Load balancing and availability
    • Sysplex Distributor
    • How the Sysplex Distributor works
    • Backup capability
    • Recovery
    • The role of dynamic routing with Sysplex Distributor
    • Sysplex Distributor and policy
    • Sysplex Distributor and MNLB
    • Connection Optimizing DNS
    • nformation flow overview
    • DNS weights
    • DNS/WLM registration
    • Starting the DNS server
    • Distributed VIPA - introduction
    • Distributed VIPA statements
    • Single system IP perspective of the sysplex
    • TCPSTACKSOURCEVIPA / SYSPLEXPORTS
    • CFRM policy example
  • Server Customisation
    • Configurable servers
    • TN3270 server customisation steps
    • Updating the TN3270 started task JCL
    • TelnetGlobals statement
    • Reducing demand for ECSA storage
    • The TELNETPARMS statement
    • The PORT statement
    • The BEGINVTAM statement
    • The VTAM application major node
    • Defining a USS table
    • Identifying the USS table in the PROFILE dataset
    • The UNIX Telnet server
    • Customising the INETD Server
    • Starting INETD and Telnet
    • SSHD UNIX file
    • SSHD - Using ICSF and
    • /dev/random)
    • SSHD - Creating configuration files
    • SHD - Creating SSHD server keys
    • SSHD - Set up SSHD server userids
    • SSHD - Create SSHD server started task
    • SSHD - TCP configuration
    • SSHD - Verify z/OS DNS / Resolver operation
    • The FTP server
    • FTPS and SFTP
    • Pros and cons of FTPS and SFTP
    • Customising the FTP.DATA dataset
    • Customising the PROFILE & SERVICES datasets
    • Starting FTP
    • SYSLOGD
    • SYSLOGD -/dev/console and /dev/log
    • SYSLOGD - create the syslog daemon configuration file
    • SYSLOGD - create empty syslog output file
    • SYSLOGD - port and services assignments
    • SYSLOGD started task JCL
    • OMVS startup
    • SYSLOGD RACF definitions
    • OMPROUTE
    • OMPROUTE - configuration file
    • OMPROUTE reserve the ports
    • OMPROUTE - update the RESOLVER configuration file
    • OMPROUTE - started task JCL
    • OMPROUTE services port numbers
    • OMPROUTE - RACF definitions
    • OMPROUTE - SYSLOGD;
    • OMPROUTE - static routes
    • OMPROUTE - Configure OSPF authentication
    • Customising other servers
    • Enterprise Extender
    • z/OS services for SNA traffic
    • PPN parameters in startup options
    • Implementation considerations
    • TCP/IP implementation
    • DYNAMICXCF
    • IUTSAMEH
    • DYNAMICXCF & HiperSockets;
    • Modifications to TCP/IP profile
    • Modifications to OSPF interface
    • Proof of initialisation of IUTSAMEH
    • VTAM implementation
    • Defining the XCA HPRIP major node
    • Defining model major nodes for EE connections and RTP pipes
    • Defining switched PUs for EE connections
  • TCP/IP Security
    • Why secure the TCP/IP network
    • Tasks that need protection with SERVAUTH Class
    • Policy based networking
    • SERVAUTH Resource Class responsibilities
    • SERVAUTH Resource Class
    • Protecting the TCPIP stack
    • Example of protecting the stack
    • Protecting your network access
    • Application considerations when using NETACCESS
    • Using the NETSTAT and PING commands to check protection
    • Protecting your network ports
    • RACF definitions for protecting network ports
    • Using the NETSTAT command to check PORT access
    • Protecting the use of socket options
    • What are network commands
    • Protecting network commands - z/OS TCPIP commands
    • Protecting network commands - NETSTAT and ONESTAT commands
    • Protecting network commands - EZACMD REXX program
    • Protecting FTP access
    • Other FTP profiles
    • Protecting TN3270 Secure Telnet Port
    • Protecting the MODDVIPA command
    • Introduction to policy based networking
    • The Policy Agent
    • RACF and PAGENT
    • Other address spaces that will need RACF profiles
    • Central policy server
    • SERVAUTH authorisation for Policy Client
    • Quality of Service
    • SNMP overview
    • SNMP in operation
    • IP filtering
    • IP Security
    • IKE protocols
    • CSFSERV resource class
    • Network Address Translation
    • Intrusion Detection Services
    • Application Transparent Transport Layer Security
    • TN3270 security
    • Secure FTP
    • Note to Auditors
    • Next step?
  • Problem Determination Considerations
    • Problem determination tools
    • The PING and OPING commands
    • The TRACERTE and the OTRACERT commands
    • TCP/IP SYSLOG output
    • TCP/IP packet trace overview
    • Starting a packet trace
    • The external writer procedure
    • Stopping a packet trace
    • Analysing a packet trace with IPCS
    • Non-z/OS packet traces
    • TCP/IP component trace overview
    • Starting and stopping a component trace
    • Analysing a component trace via IPCS
    • Analysing a component trace
    • Other available traces
    • Packet trace
  • Sample Definitions
    • Sample TCPIP.PROFILE dataset
    • Sample TCPIP.DATA dataset
    • Sample TCPIP.SERVICES dataset
    • Sample Inted Configuration file
    • Sample FTP Configuration file
    • Sample ROUTED Configuration file
    • Sample SMPT Configuration file

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