12-22-2009
Use nmap ie:
# nmap -p23 <range of hosts>
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Good day to you all,
Hope you must doing good..me..oh no I am not..I've trying to log on to my network from home...but it's not letting me...I am trying to use telnet cis.hfcc.net but it's saying "connection to the host cannot to be established"????what is this...any good reason...do I have to... (2 Replies)
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2. Filesystems, Disks and Memory
Hello friends,
The problem is that we have one SunOS5.7 server, while attempting telnet to that server following error is occured -
ld.so.1: login: fatal: libc.so.1: open failed: Too many open files
The login on console is possible. The inetd daemon is running. inetd.conf and services... (1 Reply)
Discussion started by: rahul72
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3. IP Networking
Hello friends,
The problem is that we have one SunOS5.7 server, while attempting telnet to that server following error is occured -
ld.so.1: login: fatal: libc.so.1: open failed: Too many open files
The login on console is possible. The inetd daemon is running. inetd.conf and services... (3 Replies)
Discussion started by: rahul72
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4. HP-UX
Hi,
My network layout is:
Pub LAN
|
freeBSD
|
Internal LAN
|
+ telnet srv on HP-UX 10.x box
+ other services (http, pop3, smtp, ftp)...
I've the following problem:
Inside Internal LAN I can connect myself to HP-UX telnet but from Public LAN in some place is refusing me... (5 Replies)
Discussion started by: efrenba
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5. AIX
hi all,
i have a problem in telnet.when i am using telnet to my new aix server it takes about 5min to open.
can any one tell what i have to do.???? (5 Replies)
Discussion started by: rrlog
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6. Solaris
Dear All
I have a Sun280R server when i telnet to this server from my Laptop i got error :
Could connect to 192.168.199.10(Server IP):port 23 closed
I want to login to the server through its Db25 serial port but i used to connect to it from my laptop through USB to db9 then to Db25 so do... (1 Reply)
Discussion started by: zanetti321
1 Replies
7. UNIX for Dummies Questions & Answers
I have a problem where on one unix machine I can telnet all IP addresses in the host file with no connection problem and another machine has recently started to have trouble connecting with the same host IP's on just some IP addresses where it had no trouble before. Have any ideas?? (17 Replies)
Discussion started by: tazzy
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8. UNIX for Dummies Questions & Answers
Hello everyone,
I have got this following script to telnet to other UNIX boxes from one UNIX box and then run a script to count a certain paramater. The following line connects to the other box(es):
(sleep 1; echo $username; sleep 1; echo $password ; sleep 1 ; echo y; sleep 1; echo "\r" ; sleep 1... (2 Replies)
Discussion started by: Rajat
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9. Shell Programming and Scripting
Somewhat long story:
I have a simple Perl CGI script that uses Expect to Telnet to a device and grab some data, and then spits it back to Perl for display on the Webpage.
This works for many devices I've tried, but one device just fails, it keeps rejecting the password on this device, only... (1 Reply)
Discussion started by: jondo
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10. Shell Programming and Scripting
#!/usr/bin/perl
use strict;
use warnings;
use Net::Telnet ();
my $t = new Net::Telnet (Timeout => 10,
Prompt => '/.*(#|>|\))\s*$/');
my $remote_host='home';
$t->open(Host => $remote_host, Port =>23);
$t->login('root', 'pass');
the error that I get... (4 Replies)
Discussion started by: lassimanji
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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)