The Illustrated Network- P27 ppsx

... host knew to ask for the MAC address of the destination host because the destination host is on the same LAN as the source. Hosts with the same IP network addresses must be on the same LAN segment. ... hosts on the same LAN are simply “asked” to provide their MAC addresses. The destination MAC address in the frame is the MAC address that corresponds to the destinati...

Ngày tải lên: 04/07/2014, 07:20

... chapters on top of the printer bin, and he began reading it. When I came to retrieve the printout, he was fascinated by the sample chapters. He wanted the book then and there. And as we talked, ... book is a bit of a synthesis of the written and the seen. It attempts to give the reader the opportunity to see common tasks in a real, work- ing, hands-on environment of the p...

Ngày tải lên: 04/07/2014, 07:20

... (rather than transferring the whole fi le to the other host) known as the Network File System (NFS). There is also the Simple Network Management Protocol (SNMP) for network operations. For the ... which the IP layer in hosts and routers route connectionlessly to the destina- tion host. On the receiving side, TCP accepts the incoming segments from the IP layer and deliver...

Ngày tải lên: 04/07/2014, 07:20

... which is the longest match? The router will keep compar- ing the addresses in the table to the destination address bit by bit until the table runs out of entries. The last match is the longest ... is the 22nd bit in the destination address. There is no longer entry. This makes the /22 entry the longest match for the destination address, and the packet is forwarde...

Ngày tải lên: 04/07/2014, 07:20

... that carry the call for the loss of the use of their own facilities (which could otherwise make money for the company directly) for the duration of the call. Now, in the IP world the source ... arrangement, the fi rst ISP, where the packet originates at a client, gets all of the revenue from the customer. However, the fi rst ISP shares some of this money with the...

Ngày tải lên: 04/07/2014, 07:20

... in by the server. Relay Router IP Address—If a BOOTP relay agent is used, the router fills in the address of the port the request was received on. This allows the server to reply to the proper ... use these 64 bytes (null terminated) to identify itself to the client. Boot File Name The server optionally can use these 128 bytes (null terminated) to identify the path to a...

Ngày tải lên: 04/07/2014, 08:20

... refer to the ISP’s name server for the “network” portion of the IPv6 address. The A6 record also gave the number and value of the bits present in the A6 record itself. This prevented the laborious ... zone, the DNS administrator must add the resource records (minimally the name and IP address of the host) to a fi le on the primary name server. The primary name se...

Ngày tải lên: 04/07/2014, 08:20

... not encrypted. If the user types in the password incorrectly, the authentication fails, but the user can usually try again before the server drops the connection altogether. The 11 most common ... shows the actual delivery of the mes- sage text itself. (Do not be concerned about the “undisclosed-recipients:” in the To: fi eld. The for fi eld in the message shows tha...

Ngày tải lên: 04/07/2014, 08:20

... 1.1 The biggest shortcoming of SSL is the fact that as typically implemented only the server is authenticated to the user. That is, the server certifi cate with the server’s public key and other ... documentation, the response is emailed to the applicant and loaded into the server SSL software. You usually get three things in the response: ■ The CA’s certifi cate conta...

Ngày tải lên: 04/07/2014, 08:20

... and Interfaces 27 Encapsulation 28 The Layers of TCP/IP 30 The Physical Layer 30 The Data Link Layer 32 The Network Layer 35 The Transport Layer 38 The Application Layer 41 Session Support ... xxiii About the Author xxx PART I Networking Basics CHAPTER 1 Protocols and Layers 3 The Illustrated Network 7 Remote Access to Network Devices 8 File Transfer to a Router 1...

Ngày tải lên: 04/07/2014, 07:20