Wednesday, November 30, 2011
lab 1.7.1 reflection
In this lab we learned the basics of packet tracer. We were required to create a topology network consisting of two routers, a switch, a server, as well as two desktops. First we located all the devices and connected them using the auto-connect tool. Then we configure each device according to the corresponding numbers that were provided. In addition to this we experimented with the various features of packet tracer including the tutorial. Once each device was correctly setup and configured we determine if an actual packet could travel throughout the network, using a simulation. Thus concluding our introduction to packet tracer through lab 1.7.1.
Tuesday, November 15, 2011
Cisco CCNA Period 6-7 11/15/11
I believe that in this class I have improved in tests but in classwork as well as homework I have been slacking in completing my assignments both to a satisfactory degree as well as completing them on time. Overall my grade has dropped from last marking period to present, and I am motivated as well as determined to do better and raise my grade.
Thursday, November 3, 2011
ccna period 6-7 11/3/11
Point 1- You must abide by all the legal terms and conditions of cisco and may not replicate the information that you access from cisco
Point 2- You acknowledge and agree that Cisco may collect personally identifiable information from you and use such information in accordance with Cisco's then-current privacy policy, the terms and conditions of which are available here.
Point 3- In using this website you agree to not use verbal abuse and refrain from malicious behavior.
Point 4- Except for the Forums & Chat features that expressly permit Networking Academy alumni to discuss potential career opportunities, this Website is not to be used as a solicitation for business.
Point 5- You are solely responsible for the content you have on cisco, you agree that Cisco is only acting as a venue and that Cisco has no liability related to the content of any discussion board posting or any other user-created content on its Website, whether or not arising under the laws of copyright, libel, privacy, obscenity, or otherwise.
Point 6- Information you post to our websites is not pre-screened. Cisco, or a third party organization whom Cisco may appoint to moderate and/or maintain any of the websites, each reserves the right, although it does not have the obligation, to monitor content throughout the Website and to remove any content which Cisco or such third party organization, in its sole discretion, determines to be harmful, offensive, defamatory, libelous, illegally threatening or harassing or which contains obscenity, pornography or is otherwise inflammatory; which may create liability for Cisco; or is unrelated to the intention of the Website or otherwise in violation of Cisco's policies of acceptable use.
Point 7- You should assume that everything hosted on this Website, with the exception of individual user postings, is the intellectual property of Cisco or our suppliers, all rights to this information are reserved.
Point 8- Cisco, in its sole discretion, may immediately suspend or terminate your access to the Website if you violate or otherwise fail to comply with the terms and conditions of this Acceptable Use Policy. Upon any suspension or termination, Cisco may retain or delete, in its sole discretion, any information or content that you previously provided to the Website.
Point 9- This is a cisco disclaimer
Point 10- In no way is cisco responsible for what you do as a user.
Point 11- These terms of use shall be governed in all respects by the laws of the State of California without giving effect to any conflicts of law principles that may require the application of the law of a different state or country.
Point 12- You may not cooperate with the cisco site unless you completely agree with the website usage agreement.
Point 13- The services offered by the site are property of cisco and you can sign up for daily emails.
Point 14- By submitting your content to the Website, you hereby grant to Cisco a worldwide, perpetual, irrevocable, royalty-free and fully-paid, freely transferable, right to exercise all copyright, publicity, and moral rights, in any media now known or not currently known, with respect to any content you provide to us in any public space on this Website or in any e-mail that you provide to us through this Website.
Point 15- We will treat any feedback or suggestions you provide us as non-confidential and non-proprietary, as a result you should not submit confidential or private information.
Point 16- Cisco copyright details and finalization of the usage agreement
Point 2- You acknowledge and agree that Cisco may collect personally identifiable information from you and use such information in accordance with Cisco's then-current privacy policy, the terms and conditions of which are available here.
Point 3- In using this website you agree to not use verbal abuse and refrain from malicious behavior.
Point 4- Except for the Forums & Chat features that expressly permit Networking Academy alumni to discuss potential career opportunities, this Website is not to be used as a solicitation for business.
Point 5- You are solely responsible for the content you have on cisco, you agree that Cisco is only acting as a venue and that Cisco has no liability related to the content of any discussion board posting or any other user-created content on its Website, whether or not arising under the laws of copyright, libel, privacy, obscenity, or otherwise.
Point 6- Information you post to our websites is not pre-screened. Cisco, or a third party organization whom Cisco may appoint to moderate and/or maintain any of the websites, each reserves the right, although it does not have the obligation, to monitor content throughout the Website and to remove any content which Cisco or such third party organization, in its sole discretion, determines to be harmful, offensive, defamatory, libelous, illegally threatening or harassing or which contains obscenity, pornography or is otherwise inflammatory; which may create liability for Cisco; or is unrelated to the intention of the Website or otherwise in violation of Cisco's policies of acceptable use.
Point 7- You should assume that everything hosted on this Website, with the exception of individual user postings, is the intellectual property of Cisco or our suppliers, all rights to this information are reserved.
Point 8- Cisco, in its sole discretion, may immediately suspend or terminate your access to the Website if you violate or otherwise fail to comply with the terms and conditions of this Acceptable Use Policy. Upon any suspension or termination, Cisco may retain or delete, in its sole discretion, any information or content that you previously provided to the Website.
Point 9- This is a cisco disclaimer
Point 10- In no way is cisco responsible for what you do as a user.
Point 11- These terms of use shall be governed in all respects by the laws of the State of California without giving effect to any conflicts of law principles that may require the application of the law of a different state or country.
Point 12- You may not cooperate with the cisco site unless you completely agree with the website usage agreement.
Point 13- The services offered by the site are property of cisco and you can sign up for daily emails.
Point 14- By submitting your content to the Website, you hereby grant to Cisco a worldwide, perpetual, irrevocable, royalty-free and fully-paid, freely transferable, right to exercise all copyright, publicity, and moral rights, in any media now known or not currently known, with respect to any content you provide to us in any public space on this Website or in any e-mail that you provide to us through this Website.
Point 15- We will treat any feedback or suggestions you provide us as non-confidential and non-proprietary, as a result you should not submit confidential or private information.
Point 16- Cisco copyright details and finalization of the usage agreement
Tuesday, November 1, 2011
Lab 11/1/11 ccna period 6-7
In this Lab we examined the connection between the eagle server and the wireshark program. We got an in depth understanding of syn bytes as well as source to destination handshakes including acknowledgments.
Wednesday, October 26, 2011
ccna peiod 6-7 10/26/11
I believe what went wrong in today's activity was that we had a lack of communication. We all assumed separate positions instead of working as an united body we all pursued different tasks. I think if we had some sort of guidance that the end result would be more successful.
Monday, October 17, 2011
UDP
UDP, or User Datagram Protocol enables computer applications to send messages, or in this case referred to as datagrams. These datagrams can be sent to other hosts on an Internet Protocol network without requiring prior communications to set up special transmission or data paths. UDP is most effective in small servers that have an enormous client population. UDP is cohesive to the Transport Layer due to the fact that it is time sensitive and the UDP ensures no delay when packets are dropped. UDP is a minimal message Transport Layer Protocol, unfortunately UDP offers no guarantee to the upper layers of message delivery or retaining the state of any messages that have been sent. Examples of applications that use UDP include real time multiplayer games, voice over IP as well as streaming media
Friday, October 14, 2011
Transport Layer Problems
Playstation Network Problems
On April 17, 2011 the Playstation Network was hacked exposing the personal account information of 77 million users. This prevented users of the Playstation 3 as well as PSP from online activity. This problem lasted for approximately 23 days. Sony claimed that the playstation users data was compromised long before they were able to detect a breach. Credit Card information is encrypted over the Playstation Network, but other personal details are not and therefore were vulnerable.
The attack on the network was in accordance to the Sony servers being taken offline the previous day, and therefore the Network was susceptible to a hack. George Hotz is the alleged hacker and he was able to do this by enabling himself read and write access as well as having hypervisor level access to the processor. He used a Playstation 2 emulator which had been removed by Sony from the current console. In addition he also created a custom firmware. It requires the OtherOS function of the machine, and consists of a linux kernel model and gaining control of the systems hyperdriver via bus glitching.
Playstation 3 had a feature that would update firmware and delete the OtherOS function but this was absent from the newer, slimmer models. Due to the fact that Linux is foreign to the PS3 network it made it more difficult to resolve and remove the custom firmware. Hotz had run a "homebrew" application on his own PS3 similar to the Iphone jailbreaking technique by reviewing the jailbreak of the Iphone, Sony gained assistance in solving the problem. They also hired various experts to set up firewalls and basically abolish the custom firmware.
On April 17, 2011 the Playstation Network was hacked exposing the personal account information of 77 million users. This prevented users of the Playstation 3 as well as PSP from online activity. This problem lasted for approximately 23 days. Sony claimed that the playstation users data was compromised long before they were able to detect a breach. Credit Card information is encrypted over the Playstation Network, but other personal details are not and therefore were vulnerable.
The attack on the network was in accordance to the Sony servers being taken offline the previous day, and therefore the Network was susceptible to a hack. George Hotz is the alleged hacker and he was able to do this by enabling himself read and write access as well as having hypervisor level access to the processor. He used a Playstation 2 emulator which had been removed by Sony from the current console. In addition he also created a custom firmware. It requires the OtherOS function of the machine, and consists of a linux kernel model and gaining control of the systems hyperdriver via bus glitching.
Playstation 3 had a feature that would update firmware and delete the OtherOS function but this was absent from the newer, slimmer models. Due to the fact that Linux is foreign to the PS3 network it made it more difficult to resolve and remove the custom firmware. Hotz had run a "homebrew" application on his own PS3 similar to the Iphone jailbreaking technique by reviewing the jailbreak of the Iphone, Sony gained assistance in solving the problem. They also hired various experts to set up firewalls and basically abolish the custom firmware.
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