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Network Security Technologies and Solutions (CCIE by Yusuf Bhaiji

By Yusuf Bhaiji

Counting on the place you're on your profession is how i'll cost this publication. when you are just a little new to safeguard, specifically within the Cisco international, this e-book is the publication for you and merits five stars. when you have been within the Cisco protection international for a number of years, want to examine in your CCSP or CCIE, this e-book isn't for you and merits 1 or 2 stars.

This ebook does a superb activity on going over a lot of the Cisco defense portfolio. It is going over the Cisco firewalls, AAA, NAC recommendations, IPS, MARS, VPNs, and so forth. It supplies a few simple configurations for many of those. back, I acknowledged simple and for many those i'd move so far as to claim MINIMAL.

Again, when you are trying to find research fabric for many of the CCSP tests or CCIE, this e-book wont get you shut. these checks dive manner deeper into the various applied sciences than what this booklet offers.

My actual factor with the ebook is the head line within the identify "CCIE expert developement". If I see this and that i see its seven-hundred+ pages, i am pondering a Jeff Doyle TCP/IP Vol content material booklet. Nope, now not even shut. If the authors desired to conceal all of the diversified applied sciences that they did, yet contemplate this booklet a "CCIE developement", they need to of cut up this publication into books and accelerated tremendously at the varied applied sciences.

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1, Domain Name System (DNS) traffic, and ICMP echo and echo reply packets sourced from all hosts: Step 1. Define an extended ACL. 1 eq smtp tcp any any eq domain udp any any eq domain icmp any any echo icmp any any echo-reply Step 2. Apply the ACL to an interface. Router(config)# interface Serial0 Router(config-if)# ip access-group 101 in IP Named ACLs Cisco IOS Software also added the capability to use a name in the ACL. This allows standard and extended ACLs to be given names instead of numbers.

Established ACLs The established keyword in a TCP extended ACL validates that a packet belongs to an existing connection from an ongoing TCP session initiated earlier and checks whether the TCP datagram has the acknowledgment (ACK) or reset (RST) bit set. This mechanism allows only internal networks to initiate a TCP session outbound through the device. Any TCP connections originated from the external network inbound are dropped. 0/24) being permitted, while denying TCP traffic from Network B destined to Network A.

Note that the example has one permit statement followed by an implicit deny, which will block all other traffic. Step 1. Define a standard ACL. 255 Step 2. Apply the ACL to an interface. Router(config)# interface Serial0 Router(config-if)# ip access-group 1 in Extended ACLs Extended ACLs are used to filter more-specific traffic based on the source address, the destination address, and specific protocols, ports, and flags. A sample command syntax format for various types of extended ACLs for each protocol is shown in the list that follows: • To define an extended IP ACL: access-list access-list-number [dynamic dynamic-name [timeout minutes]] {deny | permit} protocol source source-wildcard destination destination-wildcard [precedence precedence] [tos tos] [log | log-input] [time-range time-range-name] [fragments] • To define an extended Transmission Control Protocol (TCP) ACL: Chapter 2.

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