Configure AS/400
for
TCP/IP Applications
Chapter 4
MULTIPLE PROTOCOLS
•Can run simultaneous in OS/400
•It is very common to have APPC and TCP/IP
active at the same time
•APPC to support business applications
•TCP/IP for TELNET and FTP
•More configuration required to for LPD and
SMTP
GO CFGTCP
CFGTCP
Configure TCP/IP
Select one of the following:
1. Work with TCP/IP interfaces
2. Work with TCP/IP routes
3. Change TCP/IP attributes
4. Work with TCP/IP port restrictions
5. Work with TCP/IP remote system information
10. Work with TCP/IP host table entries
11. Merge TCP/IP host table
12. Change TCP/IP domain information
20. Configure TCP/IP applications
21. Configure related tables
22. Configure point-to-point TCP/IP
GO CFGTCP - Option1
Type options, press Enter.
5=Display
Opt
Internet
Address
Subnet
Mask
Line
Description
Line
Type
--------
127.0.0.1
142.204.57.104
142.204.57.105
255.0.0.0
255.255.255.192
255.255.255.192
*LOOPBACK
ETHERNET
FIBER
*NONE
*ELAN
*ELAN
Required for internal processing and testing!!
GO MAIN, 6, 4 or GO CFGCMN
CFGCMN
Configure Communications and Remote Hardware
System: ODIN
Select one of the following:
1. Work with lines
2. Work with communications controllers
3. Work with work station controllers
4. Work with communications devices
5. Work with printers
6. Work with display stations
7. Work with modes
8. Work with classes-of-service
9. Work with configuration lists
10. Work with network interfaces
11. Work with connection lists
12. Work with network servers
13. Work with NetBIOS descriptions
More...
WRKLIND
Work with Line Descriptions
System: ODIN
Position to . . . . .
Starting characters
Type options, press Enter.
2=Change 3=Copy 4=Delete 5=Display 6=Print 7=Rename
8=Work with status 9=Retrieve source
Opt
Line
ETHERNET
FIBER
QESLINE
QTILINE
Q1PLIN
Type
*ELAN
*ELAN
*SDLC
*SDLC
*SDLC
Text
FIBER ETHERNET CONNECTION
PM iSeries line
WRKLIND, 5
Display Line Description
Line description . . . . . . . . . :
Option . . . . . . . . . . . . . . :
Category of line . . . . . . . . . :
ETHERNET
*BASIC
*ELAN
Resource name . . . . . . . . . . :
Online at IPL . . . . . . . . . . :
Vary on wait . . . . . . . . . . . :
Network controller . . . . . . . . :
Local adapter address . . . . . . :
Exchange identifier . . . . . . . :
Ethernet standard . . . . . . . . :
Line speed . . . . . . . . . . . . :
Current line speed . . . . . . . . :
Duplex . . . . . . . . . . . . . . :
Current duplex . . . . . . . . . . :
Maximum frame size . . . . . . . . :
Maximum controllers . . . . . . . :
CMN03
*YES
*NOWAIT
ETHERNET
0006299CF0B1
05667200
*ALL
100M
100M
*FULL
*FULL
1496
40
Configure TCP/IP applications
SNMP
FTP
TELNET
-
Simple Network Management Protocol
SMTP
LPD
HTTP
WSG
POP
-
Simple Mail Transfer Protocol
File Transfer Protocol
Character mode client to server port
connection
Line Printer Deamon
HyperText Transfer Protocol
WorkStation Gateway
Post Office Protocol
Go CFGTCP, 20
Configure TCP/IP Applications
Select one of the following:
1. Configure SNMP agent
2. Configure RouteD
4. Configure BOOTP
5. Change DDM TCP attributes
10. Change FTP attributes
11. Configure TELNET
12. Configure SMTP
13. Change LPD attributes
16. Change POP attributes
17. Change REXEC attributes
Configuring SNMP
SNMP provides network management capabilities.
An AS/400 CAN BE a managed system in an SNMP managed
network, but the AS/400 CAN NOT be an SNMP manager.
CHGSNMPA ( WRKCNTINF)
CFGTCPSNMP
Work with communities for SNMP
ADDCOMSNMP
CHGCOMSNMP
RMVCOMSNMP
Configuring FTP
• When the AS/400 acts as a server, it allows
clients to access physical, logical, source and
save files and members stored on the system
• When files are transferred to a client system ,
the AS/400 automatically translates them from
EBCDIC to ASCII, but files can also be
transferred without translation.
Configuring
FTP
CHGFTPA
autostart *yes (STRTCP)
*no
(STRTCPSVR)
. FTP server doesn’t need to be active for the AS/400 to initiate a file
transfer, either to or from the AS/400.
. The only need for the FTP server to be active on the AS/400 is for a
remote system to initiate a file transfer to or from the AS/400.
. NBRSVR: The default FTP servers to be started automatically
is three. (1----20)
. INACTTIMO: The default number of seconds that an FTP
connection can remain idle before the AS/400 disconnects the FTP
connection is 300 seconds. (0----68years)
0 = NO Timeout
Change FTP Attributes (CHGFTPA)
Type choices, press Enter.
Autostart servers . . . . . . .
Number of initial servers . . .
Inactivity timeout . . . . . . .
Coded character set identifier
Outgoing EBCDIC/ASCII table:
Outgoing EBCDIC/ASCII table
Library . . . . . . . . . .
Incoming ASCII/EBCDIC table:
Incoming ASCII/EBCDIC table
Library . . . . . . . . . .
Initial name format . . . . . .
Initial directory . . . . . . .
Initial list format . . . . . .
New file CCSID . . . . . . . . .
Subsystem description . . . . .
Library . . . . . . . . . . .
Allow secure sockets layer . . .
AUTOSTART
NBRSVR
INACTTIMO
CCSID
TBLFTPOUT
.
*SAME
*SAME
*SAME
*SAME
*SAME
TBLFTPIN
.
*SAME
NAMEFMT
CURDIR
LISTFMT
CRTCCSID
SBSD
*SAME
*SAME
*SAME
*SAME
*SAME
ALWSSL
*SAME
Configuring TELNET
•
•
CFGTCPTELN = TELNET
CHGTELNA
autostart
*yes (STRTCP)
*no
(STRTCPSVR)
The default Telnet server to be started automatically is one.
You can start additional Telnet servers by using the command :
STRTCPSVR SERVER(*Telnet)
INACTTIMO: The default number of seconds that an Telnet
connection can remain idle before the AS/400 disconnects the Telnet
connection is 0 seconds, meaning idle connections will not be
broken.
(Valid range: 0----68years) 0 = No Timeout
Change TELNET Attributes (CHGTELNA)
Type choices, press Enter.
Autostart server . . . . . . . . *SAME
Number servers . . . . . . . . .
*SAME
Session keep alive timeout . . .
*SAME
*CALC...
Default NVT type . . . . . . . .
*SAME
Coded character set identifier
*SAME
*MULTINAT...
ASCII fullscreen mapping:
Outgoing EBCDIC/ASCII table . *SAME
Library . . . . . . . . . .
*YES, *NO, *SAME
1-200, *SAME, *CALC
0-2147483647, *SAME,
Incoming ASCII/EBCDIC table . *SAME
Library . . . . . . . . . .
Allow Secure Socket Layer . . .
*SAME
Name, *SAME, *CCSID, *DFT
Name, *LIBL, *CURLIB
*YES, *NO, *ONLY, *SAME
*SAME, *VT100, *NVT
1-65533, *SAME,
Name, *SAME, *CCSID, *DFT
Name, *LIBL, *CURLIB
Configuring Telnet
• Changing Telnet related system values
• QAUTOVRT
QLMTSECOFR
QINACTMSGQ QLMTDEVSSN
QMAXSIGN
QRMTSIGN
QDSCJOBITV
QINACTITV
QMAXSGNACN
QDEVRCYACN
.The number of attempts a hacker can try to break into AS/400 system
is: QAUTOVRT * QMAXSIGN
Configuring SMTP
• SMTP is used to transfer mail between
host.
• POP3 is used to transfer mail from a host
to a client.
• AS/400 supports both SMTP and POP3.
Configuring SMTP
• SNADS (System Network Architecture Distribution
Services) is a vital component for e-mail on the AS/400.
• SNADS is an SNA- based process to provide the routing
and addressing functions for SMTP.
• SNADS is the message distribution system that has
been available on the AS/400 since its inception.
• SNADS offers base functionality for message storage
and forwarding within an AS/400.
Configuring SMTP
• SMTP provides for direct interaction but also has a
spooling component to hold the mail until it is requested.
• POP3 process assumes that the server maintains the mail
for the client.POP3 accesses and downloads the mail
dynamically when the user on the client system wants to
receive it.
Configuring SMTP
• Incoming SMTP mail is sent to the AS/400 using the AS/400’s host
and domain name specified in the TCP/IP configuration.
• It’s critical that the AS/400 host and domain name reside in both the
host table on the AS/400 as well as in the local domain and host
name entry.
• The AS/400 stores ,routes and forwards the mail message.
– The content of the message is not important (attachments, graphics,
fonts……are not of concern to AS/400.
– The client is responsible for the proper display of the message.
SMTP -- SNADS
• SMTP– SNADS interaction is used to route the
mail to the appropriate user’s mailbox.
• SMTP receives incoming mail and forwards it to
SNADS, which then places the mail in the
appropriate storage area on the AS/400.
• Outgoing mail is sent to SMTP , which forwards
it to SNADS for delivery.
SMTP -- SNADS
• You need SNADS distribution queues and
TCP/IP routing table entries for proper
processing of incoming/outgoing mail.
• SNADS distribution queues and TCP/IP
routing table entries are created
automatically when the TCP/IP
connectivity utilities are installed.
SMTP alias table
• Personal alias table
Identifies only an SMTP address for a given user
• System alias table
Identifies the address for all users
• WRKNAMSMTP
Add, change, remove ,display ,print the alias table entries
The commands you should know
•
•
•
•
•
•
CHGSMTPA
CFGTCPSMTP
CHGPOPA
WRKDIRE
WRKDSTQ
CFGDSTSRV
CHGTELNA
ADDDIRE
CHGDIRE
RMVDIRE
RNMDIRE
STRTCP - 1
Start TCP/IP (STRTCP)
Where allowed to run: All environments (*ALL)
•
The Start TCP/IP (STRTCP)
–
–
–
–
command initializes and activates TCP/IP processing
starts the TCP/IP interfaces
starts the TCP/IP server jobs
starts the TCP/IP Point-To-Point (PTP) profiles.
A STRTCP command must be issued before any TCP/IP processing can be
performed on the iSeries. This includes Simple Network Management Protocol
(SNMP) agent processing.
•
The TCP/IP interfaces that are started are those that have set the
AUTOSTART parameter to a value of *YES using the Add TCP/IP Interface
(ADDTCPIFC), the Change TCP/IP Interface (CHGTCPIFC) commands, or
the iSeries Navigator.
•
The Change IPL Attributes (CHGIPLA) command with the STRTCP
parameter set to a value of *YES can be used to automatically submit the
STRTCP command at the completion of IPL.
STRTCP - 2
• The Start TCP/IP command only starts a TCP/IP application job if
the AUTOSTART attribute in the application's configuration is set to
*YES when the command is issued..
• When the STRTCP command is issued, the QTCPIP job in the
QSYSWRK subsystem is started. The QTCPIP job is used for
activating and deactivating TCP/IP interfaces.
• This command calls different programs to process each type of
TCP/IP server.
• Parameters
–
–
–
–
Keyword
STRSVR
STRIFC
STRPTPPRF
Description
Choices
Start application servers *YES, *NO
Start TCP/IP interfaces
*YES, *NO
Start point-to-point profiles *YES, *NO
Notes
Optional
Optional
Optional
STRTCP - 3
•
•
•
Start application servers (STRSVR)
Specifies whether or not TCP/IP application servers are started by the Start
TCP/IP (STRTCP) command.
*YES
– The STRTCP command starts all TCP/IP application servers with a configuration
attribute of AUTOSTART(*YES) when TCP/IP is activated.
•
*NO
– The STRTCP command does not start any TCP/IP application servers when
TCP/IP is activated.
•
•
Note: This parameter can be used when TCP/IP application servers using
AnyNet are already active on your system and you intend to also activate
TCP/IP. STRTCP STRSVR(*NO) activates TCP/IP processing without
starting additional TCP/IP servers.
When TCP/IP or AnyNet is already active, use the Start TCP/IP Server
(STRTCPSVR) command to start additional TCP/IP application servers.
STRTCP - 4
•
•
•
Start TCP/IP interfaces (STRIFC)
Specifies whether or not to activate all TCP/IP interfaces that specify
AUTOSTART(*YES) when TCP/IP is activated.
*YES
–
•
When the QTCPIP job is started by the STRTCP command, the job will attempt to activate all
TCP/IP interfaces for which AUTOSTART(*YES) is specified.
*NO
–
The AUTOSTART(*YES) interface parameter will be ignored. No TCP/IP interfaces will be
automatically started.
•
Note: Specifying STRIFC(*NO) only inhibits the activation of TCP/IP interfaces. It has
no effect on interfaces for other AnyNet protocols such as IP over SNA or IP over IPX.
•
•
Start point-to-point profiles (STRPTPPRF)
Specifies whether or not to activate all point-to-point profiles that specify a
configuration attribute of AUTOSTART(*YES) when TCP/IP is activated.
*YES
•
–
•
As part of the running of the STRTCP command, the Start Point-to-Point TCP/IP
(STRTCPPTP) command will also be run. The STRTCPPTP command will attempt to start all
of the point-to-point profiles with a configuration attribute of AUTOSTART(*YES).
*NO
–
The STRTCPPTP command will not be run.