21.3. TELNET commands

21.3. TELNET commands
	Chapter 21. TELNET - TELecommunication NETwork

While the TELNET Server process is running, the User can access the TELNET resource commands by pressing the combination Ctrl+P.

As a consequence of this action, the prompt of the TELNET Server, configured in the parameter PSER , will be displayed.

The user can leave the command exchange procedure and start the data exchange one by pressing again the combination Ctrl+P.

The available commands for the command interpreter of the TELNET resource are:

open: This command, available only on TELNET client processes, allows the User to open a connection with the TELNET Server process, hosting on the remote equipment identified by the specified IP.
close / exit: It requests the session to be closed.
clr: It requests the session to be closed.

21.3.1. TELNET from Abilis to Abilis

To open a TELNET session from an Abilis to another Abilis, the X.25 routing must be properly configured. Both Abilis must have the following X.25 routings:

Example 21.1. X.25 routing

[10:38:01] ABILIS_CPX:a r pr:1 in:telnet out:telnet cdi:* udi:tln

COMMAND EXECUTED

[10:38:04] ABILIS_CPX:a r pr:2 in:* out:telnet cdi:* udi:tln

COMMAND EXECUTED

[10:38:36] ABILIS_CPX:d r

---+--------+--------+---------------+---------------+------------+------------
PR |IN      |OUT     |CDI            |CDO            |UDI         |UDO
   |NEXT             |CGI            |CGO            |PIDI        |PIDO
   |                 |IPSRC          |IPDEST         |FFO
-------------------------------------------------------------------------------
0   *        Cp       *               *               CP           *
-------------------------------------------------------------------------------
1   Telnet   Telnet   *               *               TLN          *
-------------------------------------------------------------------------------
2   *        Telnet   *               *               TLN          *
-------------------------------------------------------------------------------

The routing with PR:1 allows to transfer an incoming TELNET session to an outgoing TELNET session, while routing with PR:2 allows to transfer any incoming session to an outgoing TELNET session.

Some examples follow.

Example 21.2. TELNET - Example 1

[10:39:15] ABILIS_CPX:d p telnet

RES:Telnet --------------------------------------------------------------------
Run    DESCR:Telnet_Server_and_Client_entities
       LOG:NO                 MCAU:NO                ps:128
       KEEPALIVE:30
       - Server ---------------------------------------------------------------
       tcpport:23             PSER:TELNETS>          ser:6
       AC:YES                 PWD:****************   DT:15
       CDO:00                 UDO:CP                 PROFILE:NORMAL
       IPSRC:                 IPSRCLIST:#
       - Client ---------------------------------------------------------------
                              PCLI:TELNETC>          cli:3
       CDI:*                  UDI:*

[10:39:17] ABILIS_CPX:           <--- Ctrl+P

[192.168.1.1] TELNETS>           <--- Ctrl+P
[10:52:50] ABILIS_CPX:

Example 21.3. TELNET - Example 2

[10:39:17] ABILIS_CPX:           <--- Ctrl+P

[192.168.1.1] TELNETS>clr

CLR 00 00

[192.168.1.1] TELNETS>

Example 21.4. TELNET - Example 3

[10:53:07] ABILIS_CPX:           <--- Ctrl+P

[192.168.1.1] TELNETS>clr

CLR 00 00

[192.168.1.1] TELNETS>11-tln     <--- see Example 21.1, “X.25 routing”
COM

[192.168.1.1] TELNETC>open 192.168.5.254
Trying 192.168.5.254 ... Open


User Access Verification

Password: *********
COM

Abilis CPX - Ver. 8.5.1/STD - Build 4238.7 - Branch 8.5 - Abilis-ID 1800310
Monday 28/08/2017 09:17:02 (UTC+2:00)
Login:super
Password:
Logged as SUPERUSER

[10:53:59] ABILIS_CPX_2:


21.2. TELNET diagnostics and statistics		Chapter 22. SSH - Secure SHell