Sponsored Content
Top Forums UNIX for Dummies Questions & Answers telnet echoing 'trying ip' but no port number Post 302695747 by jim mcnamara on Monday 3rd of September 2012 05:17:59 PM
Old 09-03-2012
I don't think the standards require it.

RFC 854 does not seem to mention asking telnet to echo what port it is connecting to.
Please verify here:

http://www.ietf.org/rfc/rfc854.txt

telent implementations often have extra added non-standard features, check your man page.

you could do something kludg-ey like this:
Code:
#!/bin/bash 
echo -n "Using port 4567 "  && telnet 12.12.12.12 4567

This User Gave Thanks to jim mcnamara For This Post:
 

10 More Discussions You Might Find Interesting

1. Solaris

disabled telnet now need port 23 or port 22

we disabled telnet on solaris 9 via previous a thread. We use CMS (call management system) supervisor which used port 23 (telnet). We cannot use telnet via local directive and it was shut down as stated when we shut down telnet in the inetd file. I cannot now log into the CMS box since port 23 is... (3 Replies)
Discussion started by: panzerkw
3 Replies

2. UNIX for Advanced & Expert Users

telnet on specific port??

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. Shell Programming and Scripting

Telnet IP and Port Script

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

4. AIX

Telnet to port

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

5. Windows & DOS: Issues & Discussions

Telnet to a serial port

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

6. Cybersecurity

Can't telnet to port 25 on the host.

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

7. Red Hat

telnet port 23

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

8. IP Networking

telnet for port 5433 is not working while it works for port 22

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

9. AIX

Telnet is not happening on port number 8080

Dear Experts, I am trying to open 8080 port on my Aix 7.1 server. I made an entry in /etc/services for the port. and refreshed the inetd service. But when I try to telnet localhost 8080, telnet is not happening. connection refused error is coming. I can able to telnet localhost 23 its working... (9 Replies)
Discussion started by: aix.rockie
9 Replies

10. Solaris

How to find port number wwn of particular port on dual port HBA,?

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
LDAP_URL(3)						     Library Functions Manual						       LDAP_URL(3)

NAME
ldap_is_ldap_url, ldap_url_parse, ldap_free_urldesc - LDAP Uniform Resource Locator routines LIBRARY
OpenLDAP LDAP (libldap, -lldap) SYNOPSIS
#include <ldap.h> int ldap_is_ldap_url( const char *url ) int ldap_url_parse( const char *url, LDAPURLDesc **ludpp ) typedef struct ldap_url_desc { char * lud_scheme; /* URI scheme */ char * lud_host; /* LDAP host to contact */ int lud_port; /* port on host */ char * lud_dn; /* base for search */ char ** lud_attrs; /* list of attributes */ int lud_scope; /* a LDAP_SCOPE_... value */ char * lud_filter; /* LDAP search filter */ char ** lud_exts; /* LDAP extensions */ int lud_crit_exts; /* true if any extension is critical */ /* may contain additional fields for internal use */ } LDAPURLDesc; void ldap_free_urldesc( LDAPURLDesc *ludp ); DESCRIPTION
These routines support the use of LDAP URLs (Uniform Resource Locators) as detailed in RFC 4516. LDAP URLs look like this: ldap://hostport/dn[?attrs[?scope[?filter[?exts]]]] where: hostport is a host name with an optional ":portnumber" dn is the search base attrs is a comma separated list of attributes to request scope is one of these three strings: base one sub (default=base) filter is filter exts are recognized set of LDAP and/or API extensions. Example: ldap://ldap.example.net/dc=example,dc=net?cn,sn?sub?(cn=*) URLs that are wrapped in angle-brackets and/or preceded by "URL:" are also tolerated. Alternative LDAP schemes such as ldaps:// and ldapi:// may be parsed using the below routines as well. ldap_is_ldap_url() returns a non-zero value if url looks like an LDAP URL (as opposed to some other kind of URL). It can be used as a quick check for an LDAP URL; the ldap_url_parse() routine should be used if a more thorough check is needed. ldap_url_parse() breaks down an LDAP URL passed in url into its component pieces. If successful, zero is returned, an LDAP URL description is allocated, filled in, and ludpp is set to point to it. If an error occurs, a non-zero URL error code is returned. ldap_free_urldesc() should be called to free an LDAP URL description that was obtained from a call to ldap_url_parse(). SEE ALSO
ldap(3) RFC 4516 <http://www.rfc-editor.org/rfc/rfc4516.txt> ACKNOWLEDGEMENTS
OpenLDAP Software is developed and maintained by The OpenLDAP Project <http://www.openldap.org/>. OpenLDAP Software is derived from the University of Michigan LDAP 3.3 Release. OpenLDAP 2017/06/01 LDAP_URL(3)
All times are GMT -4. The time now is 01:59 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy