Network Security

Dr. Lavian offers network security expert consulting services involving Network security architecture, firewalls, VPNs, IPSec, Tunneling, Content Filtering, Security Gateways, IDS, and IPS. As a critical part of any networking building block, network security is a key focus area of TelecommNET.  Malware, stealthy network breaches, ransomware, and botnets have changed how we approach network security. Each network security layer implements policies and controls. Authorized users gain access to network resources, but malicious actors are blocked.

Network Security

Network Security Expert

The following are Dr. Tal Lavian’s areas of expertise in Network Security:

  • Firewalls, VPNs, IPSec, Tunneling, Content Filtering, Security Gateways, IDS, and IPS.
  • Network Access Control, Digital Certificates Management, and PKI infrastructure.
  • Onboarding and Offboarding of users and devices onto enterprise networks.
  • Security Information and Events Management (SIEM), Logs Analysis, and Behavioral Analysis.
  • Corporate Directories, Identity Providers, and Identity Management Systems.
  • SSL and TLS, SSH, HTTPS, SFTP, SNMPv3, OAuth, SAML, and OpenSSL.
  • Authentication and Authorization, Encryption, and Decryption.

The Importance of Network Security

In a business environment, network security is crucial to reduce the risk of falling victim to data theft and sabotage. Network security helps protect your business from harmful spyware, intrusions, attacks, data theft, and many other malicious activities. It protects your business and all its assets by monitoring threats that affect your company, minimizing risk, and responding to attacks. Therefore, It also ensures that shared data is kept secure. Network security combines layers of defenses at the edge of and within the network. Layer 1 implements policies and controls to prevent data loss and one-off attacks, Layer 2 detects malicious behavior, and Layer 3 offers visibility into users, traffic, sessions, and applications.


A firewall is a network security device that monitors incoming and outgoing traffic. It helps protect your network by allowing authorized information to pass through while blocking access to potential threats. Security appliances deliver comprehensive enterprise-class threat protection through rich security services, including firewall, VPN, anti-malware, SSL decryption, and advanced threat defense capabilities.

Intrusion Detection and Prevention

Intrusion prevention systems (IPSs) are crucial to your network security. IPS protects your network against data breaches by detecting and blocking malicious traffic. Moreover,  an IPS appliance combines layers of defenses at the edge and within the network. Each network security layer implements policies and controls; authorized users gain access to the network, but malicious actors are blocked from carrying out exploits. With an IPS, you have peace of mind knowing that you can prevent data breaches while being assured that authorized users can access necessary information.

Network Access Control

Network Access Control (NAC) utilizes to control access to the network by authenticating and authorizing the users, their devices, and IoT user-less devices. Therefore,  the  Network access control uses a set of methods to help keep your network, endpoints, and data safe from malicious actors. These techniques combine multiple layers of protection at the edge of and within the network infrastructure. However, there are several different policies available to restrict access to your data and systems, including whitelisting known devices, identifying each user, requesting devices be correctly configured, monitoring network activity for suspicious login attempts or types of traffic, using firewalls and malware protection software, and detecting insecure configurations to stop potential attacks on your organization’s resources.


VPN technologies provide a layer of security. A virtual private network encrypts the connection from an endpoint to a network, often over the Internet. Typically, a remote-access VPN uses IPsec or Secure Sockets Layer (SSL) to authenticate the communication between the device and the network. Other types of VPNs include site-to-site, client/site, IPsec/IKE, and others.