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Network Security Tips

VRRP Configuration(virtual router redundancy protocol)

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VRRP or virtual router redundancy protocol provides router or switch interfaces failover and failback facility for seamless operation of a network. VRRP almost similar to HSRP in terms of operations and functions, but with a few added features such as VRRP supports up to 255 groups. Just like HSRP, VRRP also support a number of routers to form a virtual group which acts like … [Read more...] about VRRP Configuration(virtual router redundancy protocol)

GLBP-Gateway Load Balancing Protocol Configuration

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What is GLBP: Gateway Load balancing protocol is a Cisco proprietary protocol for both redundancy and load balancing in Cisco switches and routers. Although VRRP or HSRP provides a network link redundancy to router traffic in a or a number of routers in case of failure to the main active routes, but they do not allow to fully utilizing the available network resources. GLBP … [Read more...] about GLBP-Gateway Load Balancing Protocol Configuration

Access Control List Configuration on Cisco Router

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What is ACL: Access control list or ACLs are a set of if-then rules set on a router to allow or deny a specific group of IP to send or receive traffic from your network into another network. When you apply an ACL to a route interface  for incoming traffic then every incoming packets will be compared with your ACL first, if a match is found then either permit or deny action … [Read more...] about Access Control List Configuration on Cisco Router

Screening Router Security Test

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Much small-scale business does not use firewall as their first line of defense any web attacks to their internal network. Instead, they use a router between the Internet and Internal network to control incoming and outgoing traffic flow- this type of use of router is known as screening router. In fact, configuring ACLs inside a router can be a viable and effective solution … [Read more...] about Screening Router Security Test