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How to configure Anyconnect SSL VPN on Cisco ASA Firewall


This tutorial will configure AnyConnect Remote access VPN on the Cisco ASA Firewall. AnyConnect, a Cisco SSL VPN client, supports IPSec and SSL connectivity. We will configure full-tunnel and split-tunnel configurations on Cisco ASA for AnyConnect VPN. Let’s…

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Cisco ASA Firewall – Hairpin or U-turn NAT


Hairpin NAT, or U-Turn NAT, is helpful in different ways. Usually, using Hairpining, internal resources are accessed using its public IP Address. Hairpin NAT is also known as U-Turn NAT. This tutorial will configure Hairpin NAT in the…

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IPSec tunnel between Palo Alto Networks Firewall and Ubuntu


In the last article, we used strongSwan and configured an IPSec tunnel between two Ubuntu servers. In this article, we will configure the IPSec tunnel between Palo Alto Networks Firewalls and Ubuntu. Let’s get started! Prerequisite To configure…

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How to configure IPSec tunnel on Ubuntu using strongSwan


strongSwan is an open-source, cross-platform utility that helps us to configure IPSec tunnel on Linux environments. We can install the strongSwan and configure the IPSec VPN on Ubuntu and Debian environments. I’ve already configured a Ubuntu server on…

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mkdir recursive – Creating Linux Directories Recursively


The mkdir command helps us to create the directories. By default, you can create single-level directories. However, you can create multi-level directories by using a few additional parameters. In this article, we will use the mkdir command to…

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HSRP vs VRRP | First-hop redundancy protocols


HSRP and VRRP both protocols provide redundancy and high availability in computer networks. Both HSRP and VRRP create a virtual gateway and prevent a single point of failure. The functionality of both protocols is almost similar. In this…

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VRRP – Virtual Router Redundancy Protocol


In the last tutorial, we discussed HSRP (Hot Standby Routing Protocol). VRRP is similar to HSRP, providing redundancy and high availability in computer networks. Like HSRP, VRRP also creates a virtual gateway and avoids a single point of…

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HSRP – Hot Standby Routing Protocol


Hot Standby Routing Protocol (HSRP) is a Cisco proprietary protocol that provides redundancy in computer networks. In this article, we will discuss and configure HSRP on Cisco devices. Before moving to the HSRP discussion and configuration, let’s first…

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Configure SNMPv3 on CentOS


Assume you are an administrator in a complex network environment. You will find that it is almost impossible to monitor all of the network devices. SNMP addressed this issue. You will get a notification when anything goes wrong…

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Install Apache Web Server on Ubuntu 22.04


Apache is the most popular open-source, feature-rich Web Server. More than half of active websites deployed on Apache Web Server. It is a cross-platform server and can be deployed on Linux and Windows. It is highly customizable, and…

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