- Access control lists (ACLs) allow or deny network traffic passing through a router based on source and destination IP addresses, protocols, and port numbers.
- There are two main types of ACLs: standard ACLs which filter based on source IP addresses, and extended ACLs which filter on source/destination IP addresses, protocols, and port numbers.
- ACLs can be numbered or named, with named ACLs allowing selective editing of statements not possible with numbered ACLs.
IPv4 (Internet Protocol Version 4). This silde will give u all information about IPv4.
Hope so you like it Freinds.
and
Sorry if i can fulfill ur wish in the given IPv4 Presentation.
IPv4 (Internet Protocol Version 4). This silde will give u all information about IPv4.
Hope so you like it Freinds.
and
Sorry if i can fulfill ur wish in the given IPv4 Presentation.
Connect Laptop/PC to Router Console Port Yaser Rahmati
Every Cisco router or a switch has a console port (also known as the management port) on its back side. Console port is used to connect a computer directly to a router or switch and manage the router or switch since there is no display device for a router or switch .
Complete understanding of subnet masking
also available on the youtube channal in three parts 1,2,3
link:-
https://www.youtube.com/channel/UC36lyOTi8w1EhQ-yZssjX1g?view_as=subscriber.
Access Control List (ACLs) can be used for two purposes:
1. To filter traffic
2. To identity traffic
Access lists are set of rules, organized in a rule table. Each rules or line in an access-list provides a
condition, either permit or deny.
This study guide is intended to provide those pursuing the CCNA certification with a framework of what concepts need to be studied. This is not a comprehensive document containing all the secrets of the CCNP nor is it a “braindump” of questions and answers.
I sincerely hope that this document provides some assistance and clarity in your studies.
This is Powerpoint Presentation on IP addressing & Subnet masking. This presentation describes how IP address works, what its classes and how the subnet masking works and more.
Ten Commandments of Formal Methods: A decade laterJonathan Bowen
In 1995, a paper "Ten Commandments of Formal Methods" suggested some guidelines to help ensure the success of a formal methods project. It proposed ten requirements (or “commandments”) for formal developers to consider and follow, based on our knowledge of several industrial application success stories, most of which have been reported in more detail in two books. The paper was surprisingly popular, is still widely referenced, and used as required reading in a number of formal methods courses. However, not all have agreed with some of the commandments, feeling that they may not be valid in the long-term. We re-examine the original commandments a decade later, and consider their validity in the light of industrial best practice and experiences, especially with respect to formal notations such as B and Z. We also cover the activities of the UK Verified Software Repository Network (VSR-net) in the context of Grand Challenge 6 on Dependable Systems Evolution.
Connect Laptop/PC to Router Console Port Yaser Rahmati
Every Cisco router or a switch has a console port (also known as the management port) on its back side. Console port is used to connect a computer directly to a router or switch and manage the router or switch since there is no display device for a router or switch .
Complete understanding of subnet masking
also available on the youtube channal in three parts 1,2,3
link:-
https://www.youtube.com/channel/UC36lyOTi8w1EhQ-yZssjX1g?view_as=subscriber.
Access Control List (ACLs) can be used for two purposes:
1. To filter traffic
2. To identity traffic
Access lists are set of rules, organized in a rule table. Each rules or line in an access-list provides a
condition, either permit or deny.
This study guide is intended to provide those pursuing the CCNA certification with a framework of what concepts need to be studied. This is not a comprehensive document containing all the secrets of the CCNP nor is it a “braindump” of questions and answers.
I sincerely hope that this document provides some assistance and clarity in your studies.
This is Powerpoint Presentation on IP addressing & Subnet masking. This presentation describes how IP address works, what its classes and how the subnet masking works and more.
Ten Commandments of Formal Methods: A decade laterJonathan Bowen
In 1995, a paper "Ten Commandments of Formal Methods" suggested some guidelines to help ensure the success of a formal methods project. It proposed ten requirements (or “commandments”) for formal developers to consider and follow, based on our knowledge of several industrial application success stories, most of which have been reported in more detail in two books. The paper was surprisingly popular, is still widely referenced, and used as required reading in a number of formal methods courses. However, not all have agreed with some of the commandments, feeling that they may not be valid in the long-term. We re-examine the original commandments a decade later, and consider their validity in the light of industrial best practice and experiences, especially with respect to formal notations such as B and Z. We also cover the activities of the UK Verified Software Repository Network (VSR-net) in the context of Grand Challenge 6 on Dependable Systems Evolution.
Network Intrusion Prevention by Configuring ACLs on the Routers, based on Sno...Disha Bedi
Base Paper presented by - Muhammad Naveed, Shams un Nihar and Mohammad Inayatullah Babar At 2010 6th International Conference on Emerging Technologies (ICET)
CCNAv5 - S2: Chapter 9 Access Control ListsVuz Dở Hơi
CCNAv5
S2-Routing and Switching Essetialintrosuction to switched networks: Access Control List
Download here:
ccna5vn.wordpress.com
Blogspot:
ccna5vn.blogspot.com
Youtube Channel:
www.youtube.com/user/VuzBlog
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.
2. • ACL is a set of rules which will allow or deny the specific
traffic moving through the router
• It is a Layer 3 security which controls the flow of traffic from
one router to another.
• It is also called as Packet Filtering Firewall.
Access Control List
4. Standard Access List
• The access-list number
range is 1 – 99
• Can block a Network, Host
and Subnet
• Two way communication is
stopped
• All services are blocked.
• Implemented closest to the
destination.
• Filtering is done based on
only source IP address
• The access-list number
range is 100 – 199
• Can block a Network, Host,
Subnet and Service
• One way communication is
stopped
• Selected services can be
blocked.
• Implemented closest to
the source.
• Checks source,
destination, protocol, port
no
Extended Access List
5. • Deny : Blocking a Network/Host/Subnet/Service
• Permit : Allowing a Network/Host/Subnet/Service
• Source Address : The address of the PC from where
the request starts.
• Destination address : The address of the PC where the
request ends.
• Inbound : Traffic coming into the interface
• Outbound : Traffic going out of the interface
Terminology
6. • All deny statements have to be given First
• There should be at least one Permit statement
• An implicit deny blocks all traffic by default when
there is no match (an invisible statement).
• Can have one access-list per interface per direction.
(i.e.) Two access-list per interface, one in inbound
direction and one in outbound direction.
• Works in Sequential order
• Editing of access-lists is not possible (i.e)
Selectively adding or removing access-list
statements is not possible.
Rules of Access List
7. • Tells the router which addressing bits must match in
the address of the ACL statement.
• It’s the inverse of the subnet mask, hence is also
called as Inverse mask.
• A bit value of 0 indicates MUST MATCH (Check Bits)
• A bit value of 1 indicates IGNORE (Ignore Bits)
• Wild Card Mask for a Host will be always 0.0.0.0
Wild Card Mask
8. • A wild card mask can be calculated using
the formula :
Global Subnet Mask
– Customized Subnet Mask
-------------------------------
Wild Card Mask
E.g.
255.255.255.255
– 255.255.255.240
---------------------
0. 0. 0. 15
Wild Card Mask
9. Network Diagram
E0
10.1.1.1/8
HYD
LAN – 10.0.0.0/8
E0
20.1.1.1/8
KSA
LAN – 20.0.0.0/8
E0
30.1.1.1/8
UAE
LAN – 30.0.0.0/8
1.1.1.1/8
S0
S1
1.1.1.2/8
2.2.2.1/8
S0
S1
2.2.2.2/8
10. • The access-list number range is (1–99) & (1600-
1999)
• Can block a Network, Host and Subnet
• Two way communication is stopped
• All services are blocked.
• Implemented closest to the destination.
• Filtering is done based on only source IP address
Standard Access List
11. Creation of Standard Access List
(config)# access-list <acl no> <permit/deny>
<source add> <source WCM>
Implementation of Standard Access List
(config)# interface <interface type> <interface
no>
(config-if)# ip access-group <number> <out/in>
To Verify :
# show access-list
# show access-list <no>
12. • The access-list number range is (100 – 199)
• Can block a Network, Host, Subnet and Service
• One way communication is stopped
• Selected services can be blocked.
• Implemented closest to the source.
• Checks source, destination, protocol, port no.
Extended Access List
15. Creation of Extended Access List
(config)# access-list <acl no> <permit/deny>
<protocol> <source add> <source WCM>
<destination add> < destination WCM>
<operator> <service>
Implementation of Extended Access List
(config)# interface <interface type> <interface
no>
(config-if)# ip access-group <number> <out/in>
16. • Access-lists are identified using Names rather than
Numbers.
• Names are Case-Sensitive
• No limitation of Numbers here.
• One Main Advantage is Editing of ACL is Possible (i.e)
Removing a specific statement from the ACL is
possible.
(IOS version 11.2 or later allows Named ACL)
Named Access List
17. Standard Named Access List
Creation of Standard Named Access List
(config)# ip access-list standard <name>
(config-std-nacl)# <permit/deny> <source
address> <source wildcard mask>
Implementation
(config)#interface <interface type><interface no>
(config-if)#ip access-group <name> <out/in>
18. Extended Named Access List
Creation of Extended Named Access List
(config)# ip access-list extended <name>
(config-ext-nacl)#<permit/deny> <protocol>
<source add> <source WCM> <dest. add>
<dest. WCM> <operator><service>
Implementation
(config)# interface <interface type><interface no>
(config-if)#ip access-group <name> <out/in>