BGP (Border Gateway Protocol) is the routing protocol of the Internet, and because of the […]
Point-to-Point GRE VPN Tunnel on Cisco Devices
GRE VPN is not a good VPN Tunneling technology and this is just a reference […]
NAT type Port Address Translation (PAT) on Cisco Devices
There are 3 types of NAT: Static NAT – Translates a private to a public […]
Working with ACLs on Cisco Devices
An ACL is a list of rules that can be applied to an interface to […]
PPP/CHAP on Serial ports using Cisco Devices
Setting a serial connection between two routers using PPP with CHAP authentication: Set PC0: IP […]
Routing between VLANs with Sub-Interfaces and DHCP
In the first look at the diagram above, there is no need for the Router […]
Multimodal Network on Cisco Devices
This multimodal network with Cisco devices was made in the simulator Packet Tracer [Networking Academy] […]
OSPF on Cisco Routers
OSPF is one open standard (no proprietary) routing protocol. It is a link-state protocol and […]
EIGRP on Cisco Routers
EIGRP is a Cisco proprietary protocol to share between routers all the known networks and […]
HSRP on Cisco Routers
The only way out of a network is through the Default Gateway, and there is […]