To allow the regional offices to pass traffic securely a GRE IPsec tunnel will be created between offices. This will allow all data to be encrypted prior to being sent out to the internet. This will prevent unauthorised reading or manipulation of sensitive data. The UK office will have two tunnels, one to each branch office. In order for the remote branches to communicate with each other their traffic will pass through the head office. The initial part of the configuration is the addition of GRE tunnels between the offices. These will be based on /30 subnets within the 192.168.0.0 range. Ethernet allows packets of up to 1500 bytes to pass through it. As the GRE header adds an additional overhead to each packet Cisco recommend configuring the Maximum Transmission Unit (MTU) to 1400 bytes. An additional aid is to add the TCP adjust-mss 1360 which keep the TCP SYN packets small enough to pass across the tunnel.
Figure 5 10 GRE Tunnels
The tunnel state was verified with the “ show ip interface brief | inc Tu” Figure 5 11 GRE Tunnel Status
With the tunnels in an “up up” state the ISAKMP and IPSec configuration can be added. In order for IPSec communication to exist between the sites it must complete a 3 step process.
• Identify interesting traffic. This is done by the configuration of an extended ACL which will tell the IPSec to encrypt anything matching the permit command and pass anything matching the deny statement unencrypted
• Internet Key Exchange (IKE) phase one.
15:40:19.571720 IP 192.168.2.104.22 > 192.168.2.62.44389: S 1312754191:1312754191(0) ack 1273007929 win 5792 <mss 1460, sackOK, timestamp 107351 885, nop, wscale 6>
The Ethernet switches will guarantee a LAN connection and will be configured to achieve the highest availability. At the New York and Satellite branches, one device with be connected to the Internet through either A Digital Subscriber Line (DSL) modem while the second device is connected through a private link to ensure a redundant network connection and avoid outages (Glass, 2004). The connections from the branches to the headquarters will be through the use of a private or leased line. This connection will require two IPSec tunnels that permanent connect to the two branch offices. In the tunnel mode, IP packets will be protected between gateways and will encrypt traffic (Firewall.cx, 2015). It is recommended that have two IPSec tunnels to each branch location to ensure a secure connection. The internet connectivity will be over the broadband Internet
Note to instructor: An alternate answer could be a single large LAN for the entire headquarters, interconnected via a WAN to the field offices.
When an author writes a novel he keeps many things in mind. The author will precisely uses word choice, syntax, imagery, and many other literary devices to craft their own piece of art. From F. Scott Fitzgerald’s The Great Gatsby a selected passage can reveal all the feature to his piece of art. From this passage things such as syntax and imagery will be discussed. Fitzgerald crafts his ideas through these literary features for the reader.
In The Case Against Banning the Word “Retard”, Author Christopher M. Fairman made his argument clear in very clear that the effort to rid the use of word retarded or retard is futile and a possible danger to freedom of speech. Fairman does not base his argument on the idea that the mentally disabled, or mentally retarded, aren’t offended by the use of the word retard, but rather that the core issue isn’t the actual word but the negative connotation people put with taboo subjects. Because Fairman bases his argument on the idea that the offensive nature of words is created by the taboo nature of their origins, a large part of the paper is devoted to defending this idea with examples like the N-word and the use of the word gay. Although the
The Pontiac, Michigan plant utilizes an internet protocol (IP) wide area network to transmit data to and receive it from the San Jose (headquarters) and to the manufacturing floor. In order to protect the data from eavesdropping, the first line of defense is to encrypt the data. There are a myriad of encryption tools to accomplish this. Next, Riordan must protect the network from intrusion. To accomplish this, the Pontiac plant
Nature has always been one of the toughest obstacles. It always has its way of bringing out the crazy side of people. It can test a boy’s potential, authority, and dedication. In Doris Lessing’s “Through the Tunnel,” the main character, Jerry, refuses to give up on getting through the tunnel. Instead, he is determined to prove that he will not be labeled as a little kid. He will not pay attention to the signs that he is not old enough to get through the tunnel without getting hurt. As a result, he sets out to prove that he can win this battle and that he is not a little boy anymore. The setting in “Through the Tunnel” has an impact on the characters, the plot, and symbolism.
As a business grows, an organization often expands to multiple offices across the country and even around the world. In order to expand and keep things running smoothly, the new offices need to have a fast and secure network to share information across computer networks. In addition, traveling employees like consultants and sales representatives need an equally secure and reliable way to connect to their business's computer network from remote locations. Fortunately, VPN (virtual private network) is one of the popular technologies to accomplish these goals. According to Tyson and Crawford, a VPN is a private network that uses the Internet to connect remote sites or users together. By using a VPN, an organization ensures security that non-authenticated user can intercept the encrypted data. This article will discuss about the advantages and disadvantages when VPN comes to its security and design to a higher level of secure communication when compared to other remote methods of communications, the cost to set up VPNs within an organization, and the scalability and flexibility in terms of growing with the company and adding new users to the network.
“Through the Tunnel”, written in the early 50’s by Doris Lessing, is a short story filled with literary devices that create a coming of age story. On the surface, the story is about a boy named Jerry, an eleven-year-old boy, who is being raised by his widowed mother. They are on vacation on a beach at their usual annual spot. Jerry is faced with a challenge he desperately wants to overcome, by any means necessary. Doris Lessing uses symbolism and bildungsroman to portray the theme of coming of age.
is in pain he was not going to let that stop him from completing what he is trying to do.
I choose the devices needed for the new implementation: Cisco Catalyst 6500 router and 2800 series four switches will be utilized. Here is the cost of effective access switches that are capable of VLAN, DTP, DHCP, RSTP, PoE, and furthermore, price can range from $1,400-$3,500 dollars each. These switches offer integrated security including network control and quality service, they also offer redundancy to provide and deliver intelligent services for a networking edge. Therefore, they include flexibility in the routing series as increased port density which could induce a rapid growth in networks without any additional cost at any time. However, the more capacity a device may have the more beneficial it will be to the administrator user, when setting up any secure measures throughout the configuration process of vlans and networks. The network accessibility will be ensured throughout the provision of redundancy of routers throughout the xACME network on each site or trade school. Although, optic fiber cables will be used to connect all layer 2 and 3 switches and servers, spanning tree protocol will be set on switched to address to eliminate any bridging loops from entering into any
It is often thought that growing up is something children do with the assistance of adults; however, for many young children this is far from the case. Some children will learn important lessons and mature from taking risks. This is the case for Jerry from the short story, “Through the Tunnel,” written by Doris Lessing. In this story Jerry and his mother took daily trips down to the beach. Over time, Jerry becomes curious of the lagoon away from his safe beach and decides to explore.
There is no physical connection between the two buildings occupied by the organisation. The school is already sharing information through a VPN site to site tunnel. The current VPN approach throughout the school is not efficient. There is currently a disaster recovery opportunity in place of school data.
IPsec or IP Security is a merit protocol used to deliver secure data connection. The motive of the paper is to introduce VPN and IPsec with different VPN over IPsec applications.
The main objective of this proposal is to provide an appropriate analysis pertaining the operational challenges faced by Cisco Systems, an Internet networking icon in their business environment