Sun Microsystems Sun Workstation 100U System Manager's Manual page 96

Sun 100/150 Installation Manual
System Set-Up and Operation
thinking about whether you should run routed, just run it. If your memory is limited, see which
one of the following best applies to you, and follow through:
1. If you have no gateway machines in your local network then you don't need to run routed.
You can disable the daemon by removing (or commenting out - insert a
'#'
before each
line) the following three lines in your / etc/ rc.local file:
if I-f /usr/etc/in.routed ]; then
/usr/etc/in.routed
&
echo -n ' routed'
>
/dev/console
fi
2. If you are a gateway or a server for diskless nodes then you must run routed.
3. If you have only 1 MByte of memory and only one gateway in your local network, then you
can run routed only on the gateway machine, and disable it on all other nodes. All
machines on the local network can then redirect packets going to another accessible network
through this gateway machine. To do this, edit the / etc/ rc.local file on all machines except
the gateway (gateway, in the example). Find the line that says:
echo -n 'local daemons:'
> /
dev / console
Insert the following two lines just before it;
/usr/etc/route add 0 gateway 1
echo' /usr/etc/route add 0 gateway 1 '
> /
dev / console
Then, find the following three lines and comment them out (insert a
'#'
before each line) or
remove them:
if [ -f /usr/etc/in.routed ]; then
/usr/etc/in.routed
&
echo -n ' routed'
fi
> /
dev / console
4. Finally, if you have only 1 MByte of memory and you have more than one gateway in your
local network and you are running diskless, you can use your server's routing tables. Edit
/ etc/ rc.local file on all clients of the server machine ( .. erver, in the example), and add the
following lines:
/usr/etc/route add 0 .. erver 1
echo' /usr/etc/route add 0 .. erver l'
>
/dev/console
Then comment out or remove the daemon's lines:
if [ -f /usr/etc/in.routed ]; then
/usr/etc/in.routed & echo -n ' routed'
fi
> /
dev / console
Since a diskless node cannot run when its server is down, this always works; however, it
causes packets to be sent through the server, loading it down.
In all other cases you should run routed.
6.1.3. Network Security - /etc/hosts.equiv and .rhosts
Network security is
implem~nted
at two levels: first, at the machine or node level, and, second,
at the individual user level. The / etc/ hod ... equ;v and .rhod .. files, respectively, control access at
these levels. The security-checking process goes like this:
Revision H of 12 March 1984 6-3