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Showing posts from April, 2020

NSX-T Datacenter Firewall

In NSX-T we have two types of firewall which we will discuss into this post.

1) Distributed firewall
2) Gateway firewall
Lets talk about one by one..
1) Distributed firewall:
A distributed firewall hosted at the host (hypervisor) level which is kernel-embedded statefull firewall. This kind of firewall mostly used in between the transport nodes or you can say within in east-west network.
Basically distributed firewall helps protecting the virtual machine at the virtual machine level from the hacking attack.
Many people have a question like , if we have perimeter firewall at the physical layer to protect the network then why we require a firewall (distributed firewall) at the VM level......

  To answer this question, Yes many of you are correct that perimeter firwall is there to protect the network at the top level. However, there are some attach which directly attach at the VM level like attach from USB drive, phishing emails and advertisements attracts.

  To protect at VM level kind o…

Dockers.. Basic commandlets

In this article we will go through some of the basic commands used in dockers.

So lets get started.


1) docker ps This command is used to list all the running containers
ie:
$ docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                                                        NAMES
4ba5baace270        couchbase           "/entrypoint.sh couc…"   8 seconds ago       Up 5 seconds        8091-8096/tcp, 11207/tcp, 11210-11211/tcp, 18091-18096/tcp   naughty_hopper
6c1773f25479        nginx               "nginx -g 'daemon of…"   5 minutes ago       Up 5 minutes        80/tcp                                                       compassionate_dijkstra


2) docker ps -a This command list all the container into the docker, whether its in running, stopped or exited.

$ docker ps -a
CONTAINER ID        IMAGE               COMMAND                  CREATED              STATUS                      PORTS …