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What is an SNTP?
The Simple Network Time Protocol (SNTP) is a simpler version of the Network Time Protocol (NTP). SNTP synchronizes the time between networked computer systems and is relied on when data is being transferred via the Internet. The NTP protocol is one of the most established protocols still used on the Internet. It uses a GPS or radio clock to tell time and is accurate past the seconds place.
Why is the SNTP Necessary?
The need for precise time synchronization has continued to increase with the evolution of computer technology over the past several decades. In the networking field, network servers and their client computers require precision to the millisecond and beyond in order to ensure data file transfers occur without errors. Computers also require specific time synchronization in order to ensure data packet and email delivery in the proper sequence to destination networks and email recipients. The importance of the SNTP and NTP protocols exponentially expands with the number of computers that are on a network in order to prioritize network traffic appropriately. Computers that Use the SNTP Protocol
Servers are the primary SNTP protocol users. Servers use the protocol in order to keep the time on network services and client computers synchronized based on Internet standards. Web servers that put a heavy demand on traffic may have to switch to the NTP for time service requirements. However, the SNTP protocol is suitable for providing the time for all services and client computers on small to medium networks. What are the Security Implications of the SNTP Protocol?
The SNTP protocol’s data is subject to packet sniffing since it is plain text that is transmitted over a local network and the Internet without encryption. It may also be susceptible to a dictionary or brute force attack in order to guess the authentication and encryption keys and strings. The protocol also uses the UDP communications protocol, which may be open to IP spoofing attacks.
1. Create and AD LDS instance by clicking Start -> Administrative Tools -> Active Directory Lightweight Directory Services Setup Wizard. The Setup Wizard appears. 2. Click Next. The Setup Options dialog box appears. For the sake of this guide, a unique instance will be the primary focus. I will have a separate post regarding AD LDS replication at some point in the near future. 3. Select A unique instance. 4. Click Next and the Instance Name dialog box appears. The instance name will help you identify and differentiate it from other instances that you may have installed on the same end point. The instance name will be listed in the data directory for the instance as well as in the Add or Remove Programs snap-in. 5. Enter a unique instance name, for example IDG. 6. Click Next to display the Ports configuration dialog box. 7. Leave ports at their default values unless you have conflicts with the default values. 8. Click Next to display the App…
The previous post talks about vSphere Integrated Containers and their benefits. The VIC offers a robust solution that enables the vSphere environment to quickly get containers up and running in their current vSphere infrastructure. This environment can be useful for migrating current apps to containers or for in-house development. Architecture
In a traditional container environment, containers run as threads within the container host. vSphere Integrated Containers leverage the native constructs of vSphere for provisioning container-based applications into its own container running its own very minimal Linux kernel with just enough code to run a Docker image, thus preventing any issue with containers being accessed from other containers by pushing isolation of the container down to the hypervisor layer that is much better at handling this type of isolation.
This post is related to the issue what we faced today when we replaced the SSL certificates in our setup. When I launched the web-client and access the update manager tab, I get the message "interface
com.vmware.vim.binding.integrity.VcIntegrity is not visible from class
I started off by
restarting the VMWare vSphere Update Manager Service for the affected vCSA: 1. Log into vCenter
using the email@example.com account. 2. Home - System
Configuration - Services - Restart
This did not resolve
my issue... And we tried restarting all the services by SSH/Console into the
affected server and run the following commands: service-control
--start --all Still no luck. Make sure the certs are applied and it gets reflected in the config file. ( verify if the thumbprint matches) root@homelab71 [
/usr/lib/vmware-updatemgr/bin ]# pwd/usr/lib/vmware-updatemgr/bin root@homelab71 [
/usr/lib/vmware-updatemgr/bin ]# ./updatemgr-util config -g | less