From bdd1483cee39581d62b7b744decf45c148c283ef Mon Sep 17 00:00:00 2001 From: Murray Stokely Date: Tue, 13 Jul 2004 05:55:02 +0000 Subject: [PATCH] Use ⋼ entity so that NIS is properly enclosed in tags. --- .../handbook/network-servers/chapter.sgml | 298 +++++++++--------- 1 file changed, 149 insertions(+), 149 deletions(-) diff --git a/en_US.ISO8859-1/books/handbook/network-servers/chapter.sgml b/en_US.ISO8859-1/books/handbook/network-servers/chapter.sgml index 3dd93690dd..f8fa8149f6 100644 --- a/en_US.ISO8859-1/books/handbook/network-servers/chapter.sgml +++ b/en_US.ISO8859-1/books/handbook/network-servers/chapter.sgml @@ -1080,14 +1080,14 @@ Exports list on foobar: Linux NetBSD OpenBSD - NIS, which stands for Network Information Services, was + ⋼, which stands for Network Information Services, was developed by Sun Microsystems to centralize administration of &unix; (originally &sunos;) systems. It has now essentially become an industry standard; all major &unix; like systems (&solaris;, HP-UX, &aix;, Linux, - NetBSD, OpenBSD, FreeBSD, etc) support NIS. + NetBSD, OpenBSD, FreeBSD, etc) support ⋼. yellow pagesNIS - NIS was formerly known as Yellow Pages, but because of + ⋼ was formerly known as Yellow Pages, but because of trademark issues, Sun changed the name. The old term (and yp) is still often seen and used. @@ -1096,9 +1096,9 @@ Exports list on foobar: domains It is a RPC-based client/server system that allows a group - of machines within an NIS domain to share a common set of + of machines within an ⋼ domain to share a common set of configuration files. This permits a system administrator to set - up NIS client systems with only minimal configuration data and + up ⋼ client systems with only minimal configuration data and add, remove or modify configuration data from a single location. @@ -1113,8 +1113,8 @@ Exports list on foobar: There are several terms and several important user processes that you will come across when - attempting to implement NIS on FreeBSD, whether you are trying to - create an NIS server or act as an NIS client: + attempting to implement ⋼ on FreeBSD, whether you are trying to + create an ⋼ server or act as an ⋼ client: portmap @@ -1133,38 +1133,38 @@ Exports list on foobar: - NIS domainname - An NIS master server and all of its clients - (including its slave servers) have a NIS - domainname. Similar to an &windowsnt; domain name, the NIS - domainname does not have anything to do with DNS. + ⋼ domainname + An ⋼ master server and all of its clients + (including its slave servers) have a ⋼ + domainname. Similar to an &windowsnt; domain name, the ⋼ + domainname does not have anything to do with DNS. portmap - Must be running in order to enable RPC (Remote - Procedure Call, a network protocol used by NIS). If + Must be running in order to enable RPC (Remote + Procedure Call, a network protocol used by ⋼). If portmap is not running, it will be - impossible to run an NIS server, or to act as an NIS + impossible to run an ⋼ server, or to act as an NIS client. ypbind - Binds an NIS client to its NIS - server. It will take the NIS domainname from the - system, and using RPC, connect to the + Binds an ⋼ client to its ⋼ + server. It will take the ⋼ domainname from the + system, and using RPC, connect to the server. ypbind is the core of - client-server communication in an NIS environment; if + client-server communication in an ⋼ environment; if ypbind dies on a client machine, it - will not be able to access the NIS server. + will not be able to access the ⋼ server. ypserv - Should only be running on NIS servers; this is the NIS + Should only be running on ⋼ servers; this is the ⋼ server process itself. If &man.ypserv.8; dies, then the - server will no longer be able to respond to NIS requests + server will no longer be able to respond to ⋼ requests (hopefully, there is a slave server to take over for - it). There are some implementations of NIS (but not the + it). There are some implementations of ⋼ (but not the FreeBSD one), that do not try to reconnect to another server if the server it used before dies. Often, the only thing that helps in this case is to restart the @@ -1175,9 +1175,9 @@ Exports list on foobar: rpc.yppasswdd Another process that should only be running on - NIS master servers; this is a daemon that will allow NIS - clients to change their NIS passwords. If this daemon - is not running, users will have to login to the NIS + ⋼ master servers; this is a daemon that will allow ⋼ + clients to change their ⋼ passwords. If this daemon + is not running, users will have to login to the ⋼ master server and change their passwords there. @@ -1191,7 +1191,7 @@ Exports list on foobar: How Does It Work? - There are three types of hosts in an NIS environment: master + There are three types of hosts in an ⋼ environment: master servers, slave servers, and clients. Servers act as a central repository for host configuration information. Master servers hold the authoritative copy of this information, while slave @@ -1200,10 +1200,10 @@ Exports list on foobar: Information in many files can be shared in this manner. The master.passwd, group, - and hosts files are commonly shared via NIS. + and hosts files are commonly shared via ⋼. Whenever a process on a client needs information that would normally be found in these files locally, it makes a query to the - NIS server that it is bound to instead. + ⋼ server that it is bound to instead. Machine Types @@ -1214,30 +1214,30 @@ Exports list on foobar: master server - A NIS master server. + A ⋼ master server. This server, analogous to a &windowsnt; primary domain controller, maintains the files used by all - of the NIS clients. The passwd, + of the ⋼ clients. The passwd, group, and other various files used by the - NIS clients live on the master server. + ⋼ clients live on the master server. - It is possible for one machine to be an NIS - master server for more than one NIS domain. However, this will + It is possible for one machine to be an ⋼ + master server for more than one ⋼ domain. However, this will not be covered in this introduction, which assumes a relatively - small-scale NIS environment. + small-scale ⋼ environment. NIS slave server - NIS slave servers. + ⋼ slave servers. Similar to the &windowsnt; backup domain - controllers, NIS slave servers maintain copies of the NIS - master's data files. NIS slave servers provide the redundancy, + controllers, ⋼ slave servers maintain copies of the ⋼ + master's data files. ⋼ slave servers provide the redundancy, which is needed in important environments. They also help - to balance the load of the master server: NIS Clients always - attach to the NIS server whose response they get first, and + to balance the load of the master server: ⋼ Clients always + attach to the ⋼ server whose response they get first, and this includes slave-server-replies. @@ -1245,8 +1245,8 @@ Exports list on foobar: client - NIS clients. NIS clients, like most - &windowsnt; workstations, authenticate against the NIS server (or the &windowsnt; + ⋼ clients. ⋼ clients, like most + &windowsnt; workstations, authenticate against the ⋼ server (or the &windowsnt; domain controller in the &windowsnt; workstations case) to log on. @@ -1254,9 +1254,9 @@ Exports list on foobar: - Using NIS/YP + Using ⋼/YP - This section will deal with setting up a sample NIS + This section will deal with setting up a sample ⋼ environment. This section assumes that you are running FreeBSD 3.3 @@ -1278,7 +1278,7 @@ Exports list on foobar: currently, when you add a user to the lab, you must run adduser on all 15 machines. Clearly, this has to change, so you have decided to convert the - lab to use NIS, using two of the machines as servers. + lab to use ⋼, using two of the machines as servers. Therefore, the configuration of the lab now looks something like: @@ -1296,12 +1296,12 @@ Exports list on foobar: ellington 10.0.0.2 - NIS master + ⋼ master coltrane 10.0.0.3 - NIS slave + ⋼ slave basie @@ -1322,13 +1322,13 @@ Exports list on foobar: - If you are setting up a NIS scheme for the first time, it + If you are setting up a ⋼ scheme for the first time, it is a good idea to think through how you want to go about it. No matter what the size of your network, there are a few decisions that need to be made. - Choosing a NIS Domain Name + Choosing a ⋼ Domain Name NIS @@ -1336,83 +1336,83 @@ Exports list on foobar: This might not be the domainname that you are used to. It is more accurately called the - NIS domainname. When a client broadcasts its - requests for info, it includes the name of the NIS domain + ⋼ domainname. When a client broadcasts its + requests for info, it includes the name of the ⋼ domain that it is part of. This is how multiple servers on one network can tell which server should answer which request. - Think of the NIS domainname as the name for a group of hosts + Think of the ⋼ domainname as the name for a group of hosts that are related in some way. Some organizations choose to use their Internet - domainname for their NIS domainname. This is not + domainname for their ⋼ domainname. This is not recommended as it can cause confusion when trying to debug - network problems. The NIS domainname should be unique + network problems. The ⋼ domainname should be unique within your network and it is helpful if it describes the group of machines it represents. For example, the Art department at Acme Inc. might be in the - acme-art NIS domain. For this example, + acme-art ⋼ domain. For this example, assume you have chosen the name test-domain. SunOS However, some operating systems (notably &sunos;) use their - NIS domain name as their Internet domain name. + ⋼ domain name as their Internet domain name. If one or more machines on your network have this restriction, you must use the Internet domain name as - your NIS domain name. + your ⋼ domain name. Physical Server Requirements There are several things to keep in mind when choosing a - machine to use as a NIS server. One of the unfortunate things - about NIS is the level of dependency the clients have on the - server. If a client cannot contact the server for its NIS + machine to use as a ⋼ server. One of the unfortunate things + about ⋼ is the level of dependency the clients have on the + server. If a client cannot contact the server for its ⋼ domain, very often the machine becomes unusable. The lack of user and group information causes most systems to temporarily freeze up. With this in mind you should make sure to choose a machine that will not be prone to being rebooted regularly, or - one that might be used for development. The NIS server should + one that might be used for development. The ⋼ server should ideally be a stand alone machine whose sole purpose in life is - to be an NIS server. If you have a network that is not very - heavily used, it is acceptable to put the NIS server on a + to be an ⋼ server. If you have a network that is not very + heavily used, it is acceptable to put the ⋼ server on a machine running other services, just keep in mind that if the - NIS server becomes unavailable, it will affect - all of your NIS clients adversely. + ⋼ server becomes unavailable, it will affect + all of your ⋼ clients adversely. - NIS Servers + ⋼ Servers - The canonical copies of all NIS information are stored on - a single machine called the NIS master server. The databases - used to store the information are called NIS maps. In FreeBSD, + The canonical copies of all ⋼ information are stored on + a single machine called the ⋼ master server. The databases + used to store the information are called ⋼ maps. In FreeBSD, these maps are stored in /var/yp/[domainname] where - [domainname] is the name of the NIS domain - being served. A single NIS server can support several domains + [domainname] is the name of the ⋼ domain + being served. A single ⋼ server can support several domains at once, therefore it is possible to have several such directories, one for each supported domain. Each domain will have its own independent set of maps. - NIS master and slave servers handle all NIS requests with + ⋼ master and slave servers handle all ⋼ requests with the ypserv daemon. ypserv - is responsible for receiving incoming requests from NIS clients, + is responsible for receiving incoming requests from ⋼ clients, translating the requested domain and map name to a path to the corresponding database file and transmitting data from the database back to the client. - Setting Up a NIS Master Server + Setting Up a ⋼ Master Server NIS server configuration - Setting up a master NIS server can be relatively straight + Setting up a master ⋼ server can be relatively straight forward, depending on your needs. FreeBSD comes with support - for NIS out-of-the-box. All you need is to add the following + for ⋼ out-of-the-box. All you need is to add the following lines to /etc/rc.conf, and FreeBSD will do the rest for you. @@ -1425,22 +1425,22 @@ Exports list on foobar: nis_server_enable="YES" - This will tell FreeBSD to start up the NIS server processes + This will tell FreeBSD to start up the ⋼ server processes when the networking is next brought up. nis_yppasswdd_enable="YES" This will enable the rpc.yppasswdd daemon which, as mentioned above, will allow users to - change their NIS password from a client machine. + change their ⋼ password from a client machine. - Depending on your NIS setup, you may need to add + Depending on your ⋼ setup, you may need to add further entries. See the section about NIS servers - that are also NIS clients, below, for + linkend="network-nis-server-is-client">section about ⋼ servers + that are also ⋼ clients, below, for details. @@ -1451,20 +1451,20 @@ Exports list on foobar: - Initializing the NIS Maps + Initializing the ⋼ Maps NIS maps - The NIS maps are database files, + The ⋼ maps are database files, that are kept in the /var/yp directory. They are generated from configuration files in the - /etc directory of the NIS master, with one + /etc directory of the ⋼ master, with one exception: the /etc/master.passwd file. This is for a good reason, you do not want to propagate passwords to your root and other - administrative accounts to all the servers in the NIS domain. - Therefore, before we initialize the NIS maps, you should: + administrative accounts to all the servers in the ⋼ domain. + Therefore, before we initialize the ⋼ maps, you should: &prompt.root; cp /etc/master.passwd /var/yp/master.passwd &prompt.root; cd /var/yp @@ -1474,7 +1474,7 @@ Exports list on foobar: (bin, tty, kmem, games, etc), as well as any accounts that you do not want to be propagated to the - NIS clients (for example root and any other + ⋼ clients (for example root and any other UID 0 (superuser) accounts). Make sure the @@ -1490,10 +1490,10 @@ Exports list on foobar: script is available on most &unix; Operating Systems, but not on all. On Digital UNIX/Compaq Tru64 UNIX it is called ypsetup. - Because we are generating maps for an NIS master, we are + Because we are generating maps for an ⋼ master, we are going to pass the option to ypinit. - To generate the NIS maps, assuming you already performed + To generate the ⋼ maps, assuming you already performed the steps above, run: ellington&prompt.root; ypinit -m test-domain @@ -1510,7 +1510,7 @@ done with the list, type a <control D>. master server : ellington next host to add: coltrane next host to add: ^D -The current list of NIS servers looks like this: +The current list of ⋼ servers looks like this: ellington coltrane Is this correct? [y/n: y] y @@ -1524,7 +1524,7 @@ ellington has been setup as an YP master server without any errors. /var/yp/Makefile from /var/yp/Makefile.dist. When created, this file assumes that you are operating - in a single server NIS environment with only FreeBSD + in a single server ⋼ environment with only FreeBSD machines. Since test-domain has a slave server as well, you must edit /var/yp/Makefile: @@ -1539,12 +1539,12 @@ ellington has been setup as an YP master server without any errors. - Setting up a NIS Slave Server + Setting up a ⋼ Slave Server NIS slave server - Setting up an NIS slave server is even more simple than + Setting up an ⋼ slave server is even more simple than setting up the master. Log on to the slave server and edit the file /etc/rc.conf as you did before. The only difference is that we now must use the @@ -1623,22 +1623,22 @@ Don't forget to update map ypservers on ellington. These two lines force the slave to sync its maps with the maps on the master server. Although these entries are not mandatory, since the master server attempts to ensure - any changes to its NIS maps are communicated to its slaves + any changes to its ⋼ maps are communicated to its slaves and because password information is vital to systems depending on the server, it is a good idea to force the updates. This is more important on busy networks where map updates might not always complete. Now, run the command /etc/netstart on the - slave server as well, which again starts the NIS server. + slave server as well, which again starts the ⋼ server. - NIS Clients + ⋼ Clients - An NIS client establishes what is called a binding to a - particular NIS server using the + An ⋼ client establishes what is called a binding to a + particular ⋼ server using the ypbind daemon. ypbind checks the system's default domain (as set by the domainname command), @@ -1651,7 +1651,7 @@ Don't forget to update map ypservers on ellington. address. If there are several servers available (a master and several slaves, for example), ypbind will use the address of the first one to respond. From that point - on, the client system will direct all of its NIS requests to + on, the client system will direct all of its ⋼ requests to that server. ypbind will occasionally ping the server to make sure it is still up and running. If it fails to receive a reply to one of @@ -1661,18 +1661,18 @@ Don't forget to update map ypservers on ellington. server. - Setting Up a NIS Client + Setting Up a ⋼ Client NIS client configuration - Setting up a FreeBSD machine to be a NIS client is fairly + Setting up a FreeBSD machine to be a ⋼ client is fairly straightforward. Edit the file /etc/rc.conf and - add the following lines in order to set the NIS domainname + add the following lines in order to set the ⋼ domainname and start ypbind upon network startup: @@ -1691,8 +1691,8 @@ nis_client_enable="YES" This line will afford anyone with a valid account in - the NIS server's password maps an account. There are - many ways to configure your NIS client by changing this + the ⋼ server's password maps an account. There are + many ways to configure your ⋼ client by changing this line. See the netgroups section below for more information. For more detailed reading see O'Reilly's book on @@ -1720,17 +1720,17 @@ nis_client_enable="YES" After completing these steps, you should be able to run - ypcat passwd and see the NIS server's + ypcat passwd and see the ⋼ server's passwd map. - NIS Security + &nis Security In general, any remote user can issue an RPC to - &man.ypserv.8; and retrieve the contents of your NIS maps, + &man.ypserv.8; and retrieve the contents of your ⋼ maps, provided the remote user knows your domainname. To prevent such unauthorized transactions, &man.ypserv.8; supports a feature called securenets which can be used to restrict access @@ -1779,7 +1779,7 @@ nis_client_enable="YES" NIS-related traffic should be blocked at your firewall. Servers using /var/yp/securenets - may fail to serve legitimate NIS clients with archaic TCP/IP + may fail to serve legitimate ⋼ clients with archaic TCP/IP implementations. Some of these implementations set all host bits to zero when doing broadcasts and/or fail to observe the subnet mask when calculating the broadcast @@ -1790,17 +1790,17 @@ nis_client_enable="YES" Using /var/yp/securenets on a server with such an archaic implementation of TCP/IP is a - really bad idea and will lead to loss of NIS functionality + really bad idea and will lead to loss of ⋼ functionality for large parts of your network. tcpwrapper The use of the tcpwrapper - package increases the latency of your NIS server. The + package increases the latency of your ⋼ server. The additional delay may be long enough to cause timeouts in client programs, especially in busy networks or with slow - NIS servers. If one or more of your client systems + ⋼ servers. If one or more of your client systems suffers from these symptoms, you should convert the client - systems in question into NIS slave servers and force them + systems in question into ⋼ slave servers and force them to bind to themselves. @@ -1810,12 +1810,12 @@ nis_client_enable="YES" In our lab, there is a machine basie that is supposed to be a faculty only workstation. We do not want to take this - machine out of the NIS domain, yet the passwd - file on the master NIS server contains accounts for both faculty and + machine out of the ⋼ domain, yet the passwd + file on the master ⋼ server contains accounts for both faculty and students. What can we do? There is a way to bar specific users from logging on to a - machine, even if they are present in the NIS database. To do this, + machine, even if they are present in the ⋼ database. To do this, all you must do is add -username to the end of the /etc/master.passwd file on the client @@ -1879,7 +1879,7 @@ basie&prompt.root; machine separately, thus losing the main benefit of NIS: centralized administration. - The NIS developers' solution for this problem is called + The ⋼ developers' solution for this problem is called netgroups. Their purpose and semantics can be compared to the normal groups used by &unix; file systems. The main differences are the lack of a numeric ID @@ -1894,9 +1894,9 @@ basie&prompt.root; used in the remainder of this section demonstrates this problem. - Let us assume that your successful introduction of NIS in + Let us assume that your successful introduction of ⋼ in your laboratory caught your superiors' interest. Your next - job is to extend your NIS domain to cover some of the other + job is to extend your ⋼ domain to cover some of the other machines on campus. The two tables contain the names of the new users and new machines as well as brief descriptions of them. @@ -1994,13 +1994,13 @@ basie&prompt.root; netgroups. If a new user is added, you will only have to add the user to one or more netgroups. Those changes are independent of each other: no more for each combination - of user and machine do... If your NIS setup is planned + of user and machine do... If your ⋼ setup is planned carefully, you will only have to modify exactly one central configuration file to grant or deny access to machines. - The first step is the initialization of the NIS map + The first step is the initialization of the ⋼ map netgroup. FreeBSD's &man.ypinit.8; does not create this map by - default, but its NIS implementation will support it once it has + default, but its ⋼ implementation will support it once it has been created. To create an empty map, simply type ellington&prompt.root; vi /var/yp/netgroup @@ -2034,8 +2034,8 @@ INTERNS (,able,test-domain) (,baker,test-domain) - The NIS domain for the account. You can import - accounts from other NIS domains into your netgroup if you + The ⋼ domain for the account. You can import + accounts from other ⋼ domains into your netgroup if you are one of the unlucky fellows with more than one NIS domain. @@ -2048,12 +2048,12 @@ INTERNS (,able,test-domain) (,baker,test-domain) netgroups Netgroup names longer than 8 characters should not be used, especially if you have machines running other - operating systems within your NIS domain. The names are + operating systems within your ⋼ domain. The names are case sensitive; using capital letters for your netgroup names is an easy way to distinguish between user, machine and netgroup names. - Some NIS clients (other than FreeBSD) cannot handle + Some ⋼ clients (other than FreeBSD) cannot handle netgroups with a large number of entries. For example, some older versions of &sunos; start to cause trouble if a netgroup contains more than 15 entries. You can @@ -2070,17 +2070,17 @@ BIGGROUP BIGGRP1 BIGGRP2 BIGGRP3 users within a single netgroup. - Activating and distributing your new NIS map is + Activating and distributing your new ⋼ map is easy: ellington&prompt.root; cd /var/yp ellington&prompt.root; make - This will generate the three NIS maps + This will generate the three ⋼ maps netgroup, netgroup.byhost and netgroup.byuser. Use &man.ypcat.1; to - check if your new NIS maps are available: + check if your new ⋼ maps are available: ellington&prompt.user; ypcat -k netgroup ellington&prompt.user; ypcat -k netgroup.byhost @@ -2133,7 +2133,7 @@ ellington&prompt.user; ypcat -k netgroup.byuser Make sure that the line +:::::::::/sbin/nologin is placed after +@IT_EMP:::::::::. Otherwise, all user - accounts imported from NIS will have /sbin/nologin as their + accounts imported from ⋼ will have /sbin/nologin as their login shell. @@ -2176,7 +2176,7 @@ ellington&prompt.user; ypcat -k netgroup.byuser USERBOX for the normal workstations. Each of these netgroups contains the netgroups that are allowed to login onto these machines. The new - entries for your NIS map netgroup should look like this: + entries for your ⋼ map netgroup should look like this: BIGSRV IT_EMP IT_APP SMALLSRV IT_EMP IT_APP ITINTERN @@ -2205,7 +2205,7 @@ USERBOX IT_EMP ITINTERN USERS Once you have completed this task for all your machines, you will not have to modify the local versions of /etc/master.passwd ever again. All - further changes can be handled by modifying the NIS map. Here + further changes can be handled by modifying the ⋼ map. Here is an example of a possible netgroup map for this scenario with some additional goodies: @@ -2254,7 +2254,7 @@ TWO (,hotel,test-domain) to use machine-based netgroups. If you are deploying a couple of dozen or even hundreds of identical machines for student labs, you should use role-based netgroups instead of machine-based - netgroups to keep the size of the NIS map within reasonable + netgroups to keep the size of the ⋼ map within reasonable limits. @@ -2262,15 +2262,15 @@ TWO (,hotel,test-domain) Important Things to Remember There are still a couple of things that you will need to do - differently now that you are in an NIS environment. + differently now that you are in an ⋼ environment. Every time you wish to add a user to the lab, you - must add it to the master NIS server only, + must add it to the master ⋼ server only, and you must remember to rebuild the NIS maps. If you forget to do this, the new user will - not be able to login anywhere except on the NIS master. + not be able to login anywhere except on the ⋼ master. For example, if we needed to add a new user jsmith to the lab, we would: @@ -2288,7 +2288,7 @@ TWO (,hotel,test-domain) should not have access to those accounts. - Keep the NIS master and slave + Keep the ⋼ master and slave secure, and minimize their downtime. If somebody either hacks or simply turns off these machines, they have effectively rendered many people without @@ -2296,36 +2296,36 @@ TWO (,hotel,test-domain) This is the chief weakness of any centralized administration system. If you do - not protect your NIS servers, you will have a lot of angry + not protect your ⋼ servers, you will have a lot of angry users! - NIS v1 Compatibility + ⋼ v1 Compatibility FreeBSD's ypserv has some support - for serving NIS v1 clients. FreeBSD's NIS implementation only - uses the NIS v2 protocol, however other implementations include + for serving ⋼ v1 clients. FreeBSD's ⋼ implementation only + uses the ⋼ v2 protocol, however other implementations include support for the v1 protocol for backwards compatibility with older systems. The ypbind daemons supplied - with these systems will try to establish a binding to an NIS v1 + with these systems will try to establish a binding to an ⋼ v1 server even though they may never actually need it (and they may persist in broadcasting in search of one even after they receive a response from a v2 server). Note that while support for normal client calls is provided, this version of ypserv does not handle v1 map transfer requests; consequently, it cannot be used as a - master or slave in conjunction with older NIS servers that only + master or slave in conjunction with older ⋼ servers that only support the v1 protocol. Fortunately, there probably are not any such servers still in use today. - NIS Servers That Are Also NIS Clients + ⋼ Servers That Are Also ⋼ Clients Care must be taken when running ypserv in a multi-server - domain where the server machines are also NIS clients. It is + domain where the server machines are also ⋼ clients. It is generally a good idea to force the servers to bind to themselves rather than allowing them to broadcast bind requests and possibly become bound to each other. Strange failure modes can result if @@ -2338,7 +2338,7 @@ TWO (,hotel,test-domain) You can force a host to bind to a particular server by running ypbind with the flag. If you do not want to do this manually each time you - reboot your NIS server, you can add the following lines to + reboot your ⋼ server, you can add the following lines to your /etc/rc.conf: nis_client_enable="YES" # run client stuff as well @@ -2354,10 +2354,10 @@ nis_client_flags="-S NIS domain,serverpassword formats One of the most common issues that people run into when trying - to implement NIS is password format compatibility. If your NIS + to implement ⋼ is password format compatibility. If your NIS server is using DES encrypted passwords, it will only support clients that are also using DES. For example, if you have - &solaris; NIS clients in your network, then you will almost certainly + &solaris; ⋼ clients in your network, then you will almost certainly need to use DES encrypted passwords. To check which format your servers @@ -2397,9 +2397,9 @@ nis_client_flags="-S NIS domain,serverHaving followed the above steps on each of the &os; based NIS servers and clients, you can be sure that they all agree on which password format is used within your network. - If you have trouble authenticating on an NIS client, this + If you have trouble authenticating on an ⋼ client, this is a pretty good place to start looking for possible problems. - Remember: if you want to deploy an NIS server for a heterogenous + Remember: if you want to deploy an ⋼ server for a heterogenous network, you will probably have to use DES on all systems because it is the lowest common standard.