TCP IP Network Administration (3rd Edition; O'Reilly by Craig Hunt

By Craig Hunt

This entire consultant to constructing and operating a TCP/IP community is key for community directors, and worthy for clients of domestic platforms that entry the web. The booklet starts off with the basics -- what protocols do and the way they paintings, how addresses and routing are used to maneuver facts during the community, the way to organize your community connection -- after which covers, intimately, every thing you must comprehend to replace info through the Internet.Included are discussions on complex routing protocols (RIPv2, OSPF, and BGP) and the gated software program package deal that implements them, an instructional on configuring very important community providers -- together with DNS, Apache, sendmail, Samba, PPP, and DHCP -- in addition to elevated chapters on troubleshooting and defense. TCP/IP community management can be a command and syntax reference for very important programs resembling gated, pppd, named, dhcpd, and sendmail.With assurance that comes with Linux, Solaris, BSD, and procedure V TCP/IP implementations, the 3rd variation contains:Overview of TCP/IP providing the knowledge community providers Getting startedM easy configuration Configuring the interface Configuring routing Configuring DNS Configuring community servers Configuring sendmail Configuring Apache community protection Troubleshooting Appendices comprise dip, ppd, and chat reference, a gated reference, a dhcpd reference, and a sendmail reference This new version contains methods of configuring Samba to supply dossier and print sharing on networks that combine Unix and home windows, and a brand new bankruptcy is devoted to the real job of configuring the Apache net server. insurance of community safety now comprises information on OpenSSH, stunnel, gpg, iptables, and the entry keep an eye on mechanism in xinetd. Plus, the publication deals up-to-date information regarding DNS, together with information on BIND eight and BIND nine, the position of classless IP addressing and community prefixes, and the altering function of registrars.Without a doubt, TCP/IP community management, third variation is a must have for all community directors and a person who offers with a community that transmits info over the net.

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400 is a gateway, but a traditional IP gateway is a router. 14 | Chapter 1: Overview of TCP/IP Figure 1-6 shows the use of gateways to forward packets. The hosts (or end systems) process packets through all four protocol layers, while the gateways (or intermediate systems) process the packets only up to the Internet Layer where the routing decisions are made. Host A1 Host C1 Application Application Transport Gateway G1 Gateway G2 Transport Internet Internet Internet Internet Network Access Network Access Network Access Network Access Network A Network B Network C Figure 1-6.

There are more recent versions of IP. IP version 5 is an experimental Stream Transport (ST) protocol used for real-time data delivery. IPv5 never came into operational use. IPv6 is an IP standard that provides greatly expanded addressing capacity. Because IPv6 uses a completely different address structure, it is not interoperable with IPv4. While IPv6 is a standard version of IP, it is not yet widely used in operational, commercial networks. Since our focus is on practical, operational networks, we do not cover IPv6 in detail.

Originally, the RFCs implied that you should not use subnet numbers of all 0s or all 1s. However, RFC 1812, Requirements for IP Version 4 Routers, makes it clear that subnets of all 0s and all 1s are legal and should be supported by all routers. Some older routers did not allow the use of these addresses despite the newer RFCs. Today’s router software and hardware should make it possible for you to reliably use all subnet addresses. You don’t have to manually calculate a table like this to know what subnets and host addresses are produced by a subnet mask.

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