Juniper Simulator Labs


Route Maps: How Permit and Deny Filters Networks

When defining route map, it can be either permit or deny type. What is the difference? How does it influence match statements inside route map? I have a lab for you.

Keep it simple. Connect two routers to each other and create five loopbacks on R1. Turn on OSPF between R1 and R2 and redistribute all connected routes (loopbacks). Apply route map REDIS to this redistribution. Continue reading

Имена файлов Cisco IOS. Принятые обозначения

По данным компании Cisco Systems на 28 декабря 2004 г.

Приведенная ниже справочная информация призвана помочь инженерам в определении набора функций, доступных в той или иной версии Cisco IOS. В большинстве случаев название IOS соответствует названию IOS, загруженного с CCO. Таким образом, часто название IOS и его функциональность обозначаются набором цифр и букв. Представленный список содержит наиболее популярные обозначения, используемые в именах файлов. Continue reading

OSPF Area Types and LSA Propagation

The idea of this post is to show the LSA propagation manner depending on area type.

OSPF routing protocol has hierarchical network topology that use concept of area. OSPF area reduces the protocol’s impact on CPU and memory. Resources can be saved by blocking the propagation of some type of LSA to specific areas. Lets recall the LSA types to see how they are propagated between areas. Continue reading



Installing Honeyd 1.5c And Arpd 0.2 Under CentOS 5 (With gcc 4.x)

Installing Honeyd 1.5c And Arpd 0.2 Under CentOS 5 (With gcc 4.x)

This tutorial shows how you can install your honeypot by using Honeyd (Virtual Honeypot). Honeyd is a small daemon that creates virtual hosts on a network. The hosts can be configured to run arbitrary services, and their personality can be adapted so that they appear to be running certain operating systems. Continue reading