GRE VPN is not a good VPN Tunneling technology and this is just a reference guide for information because does […]
NAT type Port Address Translation (PAT) on Cisco Devices
There are 3 types of NAT: Static NAT – Translates a private to a public address (1-to-1). Dynamic NAT – […]
Working with ACLs on Cisco Devices
An ACL is a list of rules that can be applied to an interface to make a policy to the […]
PPP/CHAP on Serial ports using Cisco Devices
Setting a serial connection between two routers using PPP with CHAP authentication: Set PC0: IP 192.168.1.2 gateway 192.168.1.1 Set PC1: […]
Routing between VLANs with Sub-Interfaces and DHCP
In the first look at the diagram above, there is no need for the Router R1 to the computers to […]
Multimodal Network on Cisco Devices
This multimodal network with Cisco devices was made in the simulator Packet Tracer [Networking Academy] and can be downloaded here […]
OSPF on Cisco Routers
OSPF is one open standard (no proprietary) routing protocol. It is a link-state protocol and allows all the routers on […]
EIGRP on Cisco Routers
EIGRP is a Cisco proprietary protocol to share between routers all the known networks and calculate the best path based […]
HSRP on Cisco Routers
The only way out of a network is through the Default Gateway, and there is no alternative gateway or way […]
RIPv2 on Cisco Routers
RIP is a protocol that routers use to communicate and share information about what networks they are connected to. Every […]