AR-Cluster provides a
built in Telnet interface for user and node connections. In the Cfg>IoDevices
dialog, turn on the Telnet option. The
TCPIP port for Telnet connections defaults to port 23. The telnet port can be moved to a different
IP port if you want to run a closed access system.
The Telnet Activity Timer
serves as a keep-alive during extended periods of no activity on Telnet
ports. The Telnet Activity Timer works
as follows. Every 10 minutes we make a
sweep of the Telnet node and user connect objects and if there was no activity
for the last 10 minutes, we send out two Null characters. Most of the time there is traffic every 10
minutes and the Telnet Activity Timer never activates.
The RESTART/TELNET command can be used to disconnect all Telnet
connections and restart the TELNET logic
Example:
restart/telnet
To test your Telnet
access, shell to DOS and determine the IP address of your ARC node with the
IPCONFIG command. A sample follows:
C:\>IPCONFIG
Windows NT IP
Configuration
Ethernet adapter el3c5891:
IP Address. . . . . . . . . : 44.74.25.178
Subnet Mask . . . . . . . . :
255.255.0.0
Default Gateway . . . . . . : 149.74.1.254
In this case, the IP Address
of the machine is 44.74.25.178 so from the DOS command prompt type Telnet and do a Connect-Remote-System to the address of
44.74.25.178. You should get the
AR-Cluster user logon message as:
Connected to: 44.74.25.178
Welcome to the AB5K-3
AR-Cluster node Telnet port!
Please enter your call:
AB5K-9
Hello Terry (AB5K-9)
Welcome to the AB5K
AR-Cluster Node
WWV: SFI=153 A=5 K=1 Low,Qt-Act=>Low,Qt-Unset
Your last login was
Use SH/WXS to get the
latest weather conditions
TIP: SH/
35 nodes, 1 local / 719
total users Uptime
17
New Mail: Personal = 0
Bulletin = 13
AB5K-9 de AB5K-3 12-Jul
1855Z arc >
Optional password can be applied to telnet users logging into your
node. To activate
-Cfg>IoDevices>Telnet...>LoginPassword. Make sure you set up a password for all node
users Cfg>UsersLocal>Password.
Currently a blank password is acceptable and the password is case
sensitive. If password is enabled, the
telnet login looks like:
Please enter your
call:password
AR-Cluster was intentionaly designed without outbound Telnet
connections. This is mainly to preven
loops in the network. You can add a
outbound Telnet connection using the client application described below but
please be careful to prevent loops in the network. The following details are supplied by Eric, G0CGL
sysop of GB7CGL.
To
setup an outbound Telnet connection, you can use a 3rd party telnet manager application
called TelMgr.
TelMgr operates as an AGW client. Even if you
currently use only BPQ, you can interface ARC with AGW Packet Engine as
supplied with your ARC install program. The TelMgr client and
can be downloaded as freeware from http://www.qsl.net/lu7did/
Instructions
for setting up TelMgr are provided with the
application and are simple. The key points are:
1. Define
a loopback port in AGW Packet Engine.
2.
Within the TelMgr .ini file
define a callsign and SSID to identify it to AGW
and
3.
Define the ip or hostname address of the destination
cluster in the [TELNET.CLIENT] section
example: GB7DJK=gb7djk.dxcluster.net:7300 to
facilitate an outbound connection from ARC to a DXSpider
node that uses port 7300.
The
method of connecting is done via a script file executed from the AR-Cluster
Scheduler. A connection via the AGW loopback port is
made to the callsign-ssid of TelMgr
and then a telnet connection is made to the distant node. As in any other
script, provision can be made for the automatic transmission of your
cluster callsign and any required login password.
Sample
script (which in this case would be called gb7djk.scp)
PRINT Starting connection
to GB7DJK
CONNECT GB7DJK, G0CGL-10, AGW11,
90
;connect to telmgr with call-ssid of g0cgl-10
on AGW loopback port (port 1), interface 1
WAITFOR *** CONNECTED
PRINT Connected to
G0CGL-10
PRINT
Attempting to hop to GB7BIG
XMIT t
gb7djk.dxcluster.net:7300
;issue telnet
request
WAITFOR Please enter your call:
PRINT Connected to GB7DJK
XMIT
GB7CGL
WAITFOR Password:
XMIT
gb7cgl
WAITFOR
Welcome
Thanks to Eric, G0CGL
for the details using TelMgr.