ping and telnet

Sponsored Content

Top Forums UNIX for Advanced & Expert Users ping and telnet - HP-UX Post 302442968 by newbie_01 on Friday 6th of August 2010 05:29:15 AM

08-06-2010

Registered User

ping and telnet - HP-UX

Hi all,

I am not sure if my problem is specific to HP-UX or not. Hopefully someone can tell me what's wrong.

I have a server name server1 10.100.50.10 in the /etc/hosts file and if I do a ping server1, it shows the right IP address.

However, if I run telnet server1, it is not using 10.100.50.10 but the one that is on the DNS server. Can someone please advise if this is the "normal" or expected behavior of telnet? Is there something that I have to do to force telnet to resolve the name using the /etc/hosts file first instead of the DNS server?

FYI, I checked the /etc/nsswitch.conf and I do not have uncommented entries there which means it is not used. I have the /etc/resolv.conf file but I presume that the order of name resolution is the /etc/hosts first and then /etc/resolv.conf, is this a wrong assumption?

Any advise will be very much appreciated. Thanks in advance.

newbie_01

View Public Profile for newbie_01

Find all posts by newbie_01

10 More Discussions You Might Find Interesting

1. IP Networking

I can ping other computers in my office. I can telnet other users in my office but i cannot get out of the office network. If i try to go out side of my network it cannot find host. Any ideas?

2. SCO

Openserver 5.0.4 can't be ping or telnet into from a remote site

Hi, Can anybody help me out why l can't not ping my server with Openserver 5.0.4 with my windows machine from a remote site. The machine could see the local LAN with the Router however, i can't ping or telnet unto the server from another site on the WAN. The default gateway was configure on the...

3. AIX

Ping/Telnet is not happening

Hi All, We are not able to ping to a AIX box...Network is ok..when we give ping from that AIX box..it is giving 0821-067 ping: The socket creation call failed.there is no enough buffer space for the requested socket operation. refresh -s inetd is also giving socket error. Please help to...

4. IP Networking

can ping but can not telnet UNIX

I have one problem and it is giving me hard time I can ping my windows machine root@x1ChXpress:/sbin >ping 192.168.129.66 192.168.129.66 is alive root@x1ChXpress:/sbin >netstat -rn Routing Table: Destination Gateway Flags Ref Use Interface...

5. Infrastructure Monitoring

no telnet, ping ok...

We have a Sun Solaris Netra 20 server. Our O&M Server gets Alarm Processor not responding. When Alarm occurs, you can ping the sun server but cannot telnet it. We keep getting Interrupt level not serviced. var/adm/message log is > tail -f messages Apr 12 20:09:56 cama pcisch: PCI-device:...

6. UNIX for Dummies Questions & Answers

Only execute telnet and ping for user

Hello for all! This is the situation: I must create many users that only can execute telnet and ping. Create users is not a problem, but I don�t know how limit the users privileges, to only execute telnet and ping. I hope you can help me. Thank's for all. Bye :) PD: Sorry for my...

7. AIX

ping OK - telnet refused

Hi, After a crash of our older AIX server it happend as it is in the title: ping is ok, but telnet: What it can be this strange thing? Franci

8. UNIX for Dummies Questions & Answers

ping,telnet, traceroute

can you provide the command in solaris8 if I wanted to ping,telnet, traceroute an IP address with a port? thanks

9. Shell Programming and Scripting

ping and telnet timeout

Hello, I need help, I have the following which save in the result file ping and telnet:port test. Basically the script works but I should implement a check on ping and telnet command so that ping has 5 seconds threshold and telnet (more important) 10 seconds. Over that threshold ping and...

10. BSD

Ping remote sever, nc, telnet, whatever

I put this thread to shell and bsd, because I want to resolve this matter on bsd. May somebody can explain to me how to ping a remote server, in unix. BTW the following code examples were tried on a linux system as well, with the same output, nothing. But on my bsd are not installed nmap neither...

LEARN ABOUT DEBIAN

desproxy-dns

desproxy-dns(1) 						   User Commands						   desproxy-dns(1)

NAME

       desproxy-dns - DNS for dynamic connections

SYNOPSIS

	  desproxy-dns dns_server proxy_host proxy_port

OPTIONS

       None

DESCRIPTION

       If you have direct DNS access then you don't need to do anything else.  You know you have direct DNS access if you can resolve host names
       to IP addresses.

       NOTE: as desproxy-dns listens in port 53 (which is less than 1024) you may need administrator privileges to exec desproxy-dns (in fact if
       you are running UN*X, you actually have to run desproxy-dns as root).

       OK, so you have a dns server accessible now. But your computer doesn't know anything about that. You must configure your network
       accordingly (again, need to be root in UN*X).

       Edit /etc/resolv.conf and add the line "nameserver 127.0.0.1". You don't have to restart anything. Just test ping and see if it works.

ENVIRONMENT

       None.

FILES

       None.

SEE ALSO

       dnsproxy(1), ping(1)

AUTHORS

       This manual page was written by Jari Aalto <jari.aalto@cante.net>, for the Debian GNU system (but may be used by others). Released under
       license GPL v2 or any later version.

desproxy-dns							    2012-03-26							   desproxy-dns(1)

10 More Discussions You Might Find Interesting

1. IP Networking

ping and telnet

Discussion started by: macdonto

2. SCO

Openserver 5.0.4 can't be ping or telnet into from a remote site

Discussion started by: kayode

3. AIX

Ping/Telnet is not happening

Discussion started by: b_manu78

4. IP Networking

can ping but can not telnet UNIX

Discussion started by: amon