04
Mar
Verifying DNS-server (nslookup)
nslookup ( Server name lookup search on the name server) :- A utility that provides a user command line interface to access the DNS system. Allows you to specify different types of queries and query tells the server randomly. Its counterpart is the utility host and dig. Developed as part of a package BIND (for... Read More
02
Mar
Service Oriented Architecture And SaaS
When searching for information in the blogosphere about Saas, many times I’ve seen this acronym associated with Service Oriented Architecture (SOA). In the Wikipedia, the concept of Service Oriented Architecture (SOA) is very well explained, so I just want to express my opinion on why I believe that SOA and Saas are closely related. Something... Read More
25
Feb
The Three Most Necessary Skills Of SysAdmin
1. Ability to use search engines (google in particular). Why?? Because 90% of cases accelerate solution for the problem within ten minutes. Incidentally, it is helpful for not only system administrators but for everyone. 2. Knowledge of English. Why?? Because virtually all of the useful documentation is in English. There are good articles, but still... Read More
23
Feb
OpenVPN To Access The Internet
Sometimes you need to do so that the user, after connecting to VPN, could use the server colocation as a default gateway that is accessed through the Internet. Even if you already have a default gateway. The problem that arises here is: how to make sure that after installing the default gateway, encapsulated in the... Read More
21
Feb
IPSec – what is it ?
IPSec – is a widely used technology which allows you to add an additional level of encryption and authentication / message integrity to any traffic, which is transmitted over IP. It is used both to create a VPN, or just for protecting individual hosts or data. ipsec Principally, the IPSec can be divided into three... Read More
