03-05-2007
10 More Discussions You Might Find Interesting
1. IP Networking
Hello All
I am running redhat linux 7.2 and would like to know how i can block telnetting to a specified port .
say for example i would like to block telnet acesses to port 80.
regards
Xiamin (5 Replies)
Discussion started by: xiamin
5 Replies
2. UNIX for Advanced & Expert Users
Hi all,
I have a problem. I have machine names and their IP addresses in /etc/hosts file. My application does telnet on that machine host name. The application does not uses IP address for tenet. It will fetch the host name from /etc/hosts file.
Now the telnet server runs on customized port.... (6 Replies)
Discussion started by: zing_foru
6 Replies
3. UNIX for Dummies Questions & Answers
Hi,
I have PC with Linux OS RHEL3 and USB port is disabled from BIOS. BIOS access is protected using password. But, I have root access. Now, how can I enable USB port using root access? Is there any trick that I can do using root access that can enable USB port once my PC has booted up? (3 Replies)
Discussion started by: gydave
3 Replies
4. Shell Programming and Scripting
Hi,
I would like to create a simple script that will telnet a number of IP and Ports one after the other to confirm connectivity to those addresses.
I don't need to log on, just output to a file what the response is, i.e Escape Character, connectivity refused etc.
Complete newbie to... (6 Replies)
Discussion started by: asou
6 Replies
5. AIX
can some one help me ?
what happens when we telnet to a port ?
example
telnet 192.168.0.xx 1234
where 1234 is a port number
Thank you (5 Replies)
Discussion started by: anwesh
5 Replies
6. Windows & DOS: Issues & Discussions
Hello all.
I have an old computer with M$-DOS 7. I want to use it like a dumb terminal, with telnet. I need to connect it to my desktop These are my questions:
How can i configure the serial port on dos?
How can i telnet form dos to the serial port?
How can i set up a telnet server on the... (12 Replies)
Discussion started by: mghis
12 Replies
7. Cybersecurity
Hi, we have recently setup a new UNIX server with solaris 10 and I am having issue with with SMTP/sendmail.
telnet localhost 25 --- works
telnet hostname.domain.com 25 -- does not work.
# telnet hostname.domain.com 25
Trying 10.122.1.111...
telnet: Unable to connect to remote host:... (1 Reply)
Discussion started by: esmgr
1 Replies
8. Red Hat
My linux version is 2.6.18-194.e14 (Oracle enterprise linux).
Could you please tell me how to enable telnet on the server.
When I try to connect the server through another pc using telnet it is throwing error.
Connecting To <ip address>...Could not open connection to the host, on port 23.... (3 Replies)
Discussion started by: oradba_arun
3 Replies
9. IP Networking
Hi,
I am trying to set up a dev environment and I have Ubuntu server (10.16.1.92) and a CentOS VM (10.16.3.235) on this. On the CentOS I have a program running on port 5433. Now my problem is that I am unable to telnet this port from another Windows server whereas I can telnet port 22 from... (5 Replies)
Discussion started by: rishav
5 Replies
10. Solaris
please find the below o/p for your reference
bash-3.00# fcinfo hba-port
HBA Port WWN: 21000024ff295a34
OS Device Name: /dev/cfg/c2
Manufacturer: QLogic Corp.
Model: 375-3356-02
Firmware Version: 05.03.02
FCode/BIOS Version: BIOS: 2.02; fcode: 2.01;... (3 Replies)
Discussion started by: sb200
3 Replies
LEARN ABOUT CENTOS
telnet-probe
TELNET-PROBE(1) General Commands Manual TELNET-PROBE(1)
NAME
telnet-probe - lightweight telnet-like port probe
SYNOPSIS
$PCP_BINADM_DIR/telnet-probe [-c] [-v] host port
DESCRIPTION
telnet-probe allows the pmdashping(1) daemons to establish connections to arbitrary local and remote service-providing daemons so that
response time and service availability information can be obtained.
The required host and port number arguments have the same meaning as their telnet(1) equivalents.
The -c option causes telnet-probe to perform a connect(2) only. This skips the read(2) and write(2) exercise that would otherwise be done
after connecting (see below).
The -v option causes telnet-probe to be verbose while operating.
Once the telnet connection has been established, telnet-probe reads from stdin until end-of-file, and writes all the input data to the tel-
net connection. Next, telnet-probe will read from the telnet connection until end-of-file, discarding whatever data it receives. Then
telnet-probe exits.
To operate successfully, the input passed via telnet-probe to the remote service must be sufficient to cause the remote service to close
the connection when the last line of input has been processed, e.g. ending with ``quit'' when probing SMTP on port 25.
By default telnet-probe will not produce any output, unless there is an error in which case a diagnostic message can be displayed (in ver-
bose mode only) and the exit status will be non-zero indicating a failure.
PCP ENVIRONMENT
Environment variables with the prefix PCP_ are used to parameterize the file and directory names used by PCP. On each installation, the
file /etc/pcp.conf contains the local values for these variables. The $PCP_CONF variable may be used to specify an alternative configura-
tion file, as described in pcp.conf(5).
DIAGNOSTICS
If telnet-probe succeeds, then 0 will be returned. If the attempt to establish a connection fails or is terminated, then a non-zero exit
status is returned.
SEE ALSO
PCPintro(1), pmdashping(1), pmie(1), telnet(1), connect(2), read(2) and write(2).
Performance Co-Pilot PCP TELNET-PROBE(1)