title,doi,url,abstract,journal,publication_year,pmid,arxiv Communication Technology and Network Security, https://doi.org/10.32628/IJSRCSEIT, https://ijsrcseit.com/CSEIT19478, Security is a fundamental component in the Communication Technology and network Security. The first and foremost thing of every network planning designing building and operating a network is the importance of a strong security policy. Network security has become more important to personal computer users organizations and the military. With the advent of the internet security became a major concern. The internet structure itself allowed for many security threats to occur. Network security is becoming of great importance because of intellectual property that can be easily acquired through the internet. There are different kinds of attack that can be when sent across the network. By knowing the attack methods allows for the appropriate security to emerge. Many businesses secure themselves from the internet by means of firewalls and encryption mechanisms. There is a large amount of personal commercial military and government information on networking infrastructures worldwide and all of these required different security mechanisms. In this paper I am trying to discuss current communication technology different kinds of attacks along with various different kinds of security mechanism that can be applied according to the need and architecture of the network., International Journal of Scientific Research in Computer Science Engineering and Information Technology, 2019, CSEIT19478