To understand why we require DNS server we have to go back to initial stages of networking the computers around late 1960’s and early 1970’s where it all started in Universities(especially Barkley University). Initially there is single computer for university due to cost and other factors, then to multiple systems per university. When computers started increasing exponentially in universities at this time people are forced to … Continue Reading
We are very much happy to announce that we started posting on DNS client and Server stuff on our blog for this month(Jan 2011). We already have some minor existing stuff related to DNS and troubleshooting it. Below are quick links to our existing DNS Server/Client stuff
http://www.linuxnix.com/tag/dns-servers
http://www.linuxnix.com/tag/dns
Some of the DNS topics which are going to cover in this month are as follows. Please feel free to add requirements for DNS concepts which are not … Continue Reading
This is bit important post on understanding the ports, their details and numbers.
Some FAQ related PORTS
Q. What is a port?
A port is software docking point in your machine where remote application uses for communication. This is analogy to the physical ports for entering in to the Countries.
Q. What is hardware port?
This is physical peripheral connection point to a machine from a physical device.
Q. What is a socket?
Socket is … Continue Reading
Recently we got a requirement to configure a Sub-domain(sub-zone) record in DNS server. Its little bit advanced concept but very much easy to configure. The most known records are as follows.
A record for Adding an IP address record
NS record for a Name Server record
PTR record for a pointer record( i.e. Reverse IP lookup record)
CNAME record for a Canonical name record(i.e. alias to a A record)
MX record for a Mail Exchange … Continue Reading
In this post I am going to teach How to use DIG and with examples.
DIG is one of the most important tool in debugging DNS server related issues.
Some points to be noted about DIG.
1.DIG full-form/abbreviation is Domain Information Groper 2.DIG can work on command line or as well in batch mode 3.DIG supports Internationalized Domain Name(IDN) convections too. 4.DIG is more advanced than older tools such as nslookup and … Continue Reading
Chittaranjan: It will be better if you'll put about Linux Cluster and Storage, coz now-a-days ...
This is a detailed explanation post about Set GID(SGID) bit in Linux.: [...] Example: Linux Group quota implementation [...]This is a detailed explanation post about Set GID(SGID) bit in Linux.: [...] our ongoing File and Folder permissions in Linux. We already discussed abo ...What is Sticky bit and how to implement Sticky bit in Linux: [...] Folder permissions in Linux. We already discussed about CHMOD, UMASK, C ...What is Sticky bit and how to implement Sticky bit in Linux: [...] is next to SGID in our ongoing File and Folder permissions in Linux. We ...
