Accessing the WAN – Chapter 7 pot

... reassignment of the IP address to another client later, or for the client to get another assignment if the client moves to another subnet. Clients may also renew leases and keep the same IP address. ... farm. These servers may provide DHCP, DNS, TFTP, and FTP services for the clients. The problem is that the network clients typically are not on the same subnet as those se...

Ngày tải lên: 05/07/2014, 03:20

... LANs –A router on each LAN is the DTE. –A serial connection, such as a T1/E1 leased line, connects the router to the Frame Relay switch of the carrier at the nearest POP for the carrier. The ... typically assign DLCIs in the range of 16 to 10 07.  In the figure, there is a VC between the sending and receiving nodes. The VC follows the path A, B, C, and D. –Fr...

Ngày tải lên: 05/07/2014, 03:20

... report No. 71 170 10 47. ISBN No. 90-6960-138-9 978 -90-6960-138-0. Khan S. 1995. Supercritical uid extraction of bound pesticide residues from soil and food commodities. J Agric Chem 43: 171 8–1 72 3. Krogh ... LC/EC 50 values/NOEC These endpoints are used in the derivation of the PNEC and fed into the risk assessment. NOEC This endpoint is used in the derivation of the P...

Ngày tải lên: 18/06/2014, 22:20

... as Frame Relay. –However, there are times when the benefits outweigh the cost of the leased line. The dedicated capacity removes latency or jitter between the endpoints. –Constant availability ... modem. The modem modulates the binary data into an analog signal at the source and demodulates the analog signal to binary data at the destination. The physical charact...

Ngày tải lên: 05/07/2014, 03:20

... the remote DCE, which decodes the signal back into a sequence of bits. The remote DCE then signals this sequence to the remote DTE.  The connection between the two DCE devices is the WAN ... request requires no authentication, then PPP progresses to the next level. –If an incoming PPP request requires authentication, then it can be authenticated using either the...

Ngày tải lên: 05/07/2014, 03:20

... information –Bots within the organization –Theft of customer or employee data –Abuse of wireless network –System penetration –Financial fraud –Password sniffing –Key logging –Website defacement ... –Insider abuse of network access –Virus –Mobile device theft –Phishing where an organization is fraudulently represented as the sender –Instant messaging misuse –Denial of...

Ngày tải lên: 05/07/2014, 03:20

... If the packet is permitted by the tests, it is then processed for routing. –Outbound ACLs - Incoming packets are routed to the outbound interface, and then they are processed through the ... first filters on the source address, then on the port and protocol of the source. It then filters on the destination address, then on the port and protocol of the destination, and...

Ngày tải lên: 05/07/2014, 03:20

... connectivity through the residence. – Since the POTS splitter separates the ADSL and voice signals at the NID, there is usually only one ADSL outlet available in the house. – The user can install ... ADSL service. –POTS splitters separate the DSL traffic from the POTS traffic. The POTS splitter is a passive device. Splitters are located at the CO and, in som...

Ngày tải lên: 05/07/2014, 03:20

... with the hubs of the stars linked to form the region. •interconnect the regions to form the core of the WAN. – Regions could be geographic, connecting between three and 10 areas, and the hub ... for the external system.  Step 3. Narrow the scope –Determine if the problem is at the core, distribution, or access layer of the network.  Step 4. Gather symptom...

Ngày tải lên: 05/07/2014, 03:20

... fa0 172 .16.1.0/24 172 .16.2.0/24 172 .16.3.0/24 172 .16.4.0/24 192.168.1.0/24 .1 .1 .2 .1 .1 .1 .2 172 .16.10.0/24 lo1 172 .16.20.0/24 lo2 172 .16.30.0/24 lo3 172 .16.40.0/24 lo4 22 The Default Route RouterB(config)#ip ... 172 .16.2.2 03:12:45: RT: add 172 .16.3.0/24 via 172 .16.2.2, static metric [1/0] RouterA(config)# Router B Router CRouter A s0 s0 s0 s1 fa0 fa0 fa0 172 .16.1.0/...

Ngày tải lên: 18/03/2014, 14:20