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Special Forums IP Networking DNS problem : ping doesn't recognize hostname Post 302970435 by imort on Wednesday 6th of April 2016 01:22:51 PM
Old 04-06-2016
Quote:
Originally Posted by hiten.r.chauhan
I have vmware on my windows PC ( hostname : acer ).
vmware has RHEL 7 ( hostname : rhel7 ) installed recently.

RHEL IP configuration
IP : 192.168.5.128
Netmask : 255.255.255.0

ssh to rhel7 works from acer using putty

resolve.conf
Code:
cat /etc/resolv.conf
nameserver 192.168.5.1

host file of acer has the entry
192.168.5.1 acer

ping to acer from rhel 7 does not work.
Code:
[root@rhel7 ~]# ping acer
ping: unknown host acer

Hello

I believe that 192.168.5.1 is your Acer windows PC, and there is no DNS server on it, which are you relies to.
You'll need to set some other DNS server for your Linux server in resolf.conf, for example 8.8.8.8 (Google DNS server).

If you need to be able ping your Acer PC by name from Linux server, you can add this line at /etc/hosts:

Code:
192.168.5.1 acer

I think that you might need to improve your knowledge about DNS a little, this article can help a bit.

Last edited by imort; 04-06-2016 at 02:23 PM.. Reason: Forgot to add a link to article about DNS records
 

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PRIPS(1)						    BSD General Commands Manual 						  PRIPS(1)

NAME
prips -- print the IP addresses in a given range SYNOPSIS
prips [-c] [-d delim] [-e exclude] [-f format] [-i incr] start end prips [-c] [-d delim] [-e exclude] [-f format] [-i incr] CIDR-block prips -h DESCRIPTION
The prips tool can be used to print all of the IP addresses in a given range. It can enhance tools that only work on one host at a time, e.g. whois(1). The prips tool accepts the following command-line options: -c Print the range in CIDR notation. -d delim Set the delimiter to the character with ASCII code delim where 0 <= delim <= 255. -e <x.x.x,x.x> Exclude ranges from the output. -f format Set the format of addresses (hex, dec, or dot). -h Show summary of options. -i incr Set the increment to 'x'. ENVIRONMENT
The prips tool's operation is not influenced by any environment variables. FILES
The prips tool's operation is not influenced by any files. EXAMPLES
Display all the addresses in a reserved subnet: prips 192.168.32.0 192.168.32.255 The same, using CIDR notation: prips 192.168.32/24 Display only the usable addresses in a class A reserved subnet using a space instead of a newline for a delimiter: prips -d 32 10.0.0.1 10.255.255.255 Display every fourth address in a weird block: prips -i 4 192.168.32.7 192.168.33.5 Determine the smallest CIDR block containing two addresses: prips -c 192.168.32.5 192.168.32.11 DIAGNOSTICS
The prips utility exits 0 on success, and >0 if an error occurs. SEE ALSO
ipsc(1), gipsc(1) STANDARDS
No standards were harmed in the writing of the prips tool. HISTORY
The prips tool was originally written by Daniel Kelly and later adopted by Peter Pentchev. This manual page was originally written by Juan Alvarez for the Debian GNU/Linux system and later added to the prips distribution and converted to mdoc format by Peter Pentchev. AUTHORS
Daniel Kelly <dan@vertekcorp.com> Juan Alvarez <jalvarez@fluidsignal.com> Peter Pentchev <roam@ringlet.net> BUGS
Please report any bugs in the prips tool to its current maintainer, Peter Pentchev. BSD
March 1, 2011 BSD
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