Installing and Administering Internet Services

482 Chapter12
Troubleshooting Internet Services
Troubleshooting the Internet Services
Flowchart 3. Security for Berkeley Services
This flowchart is for troubleshooting security for the Berkeley Services:
sendmail, BIND, finger, the rexec library, and those services that
begin with “r”. The following information assumes an account has a
password. If it does not, the security checks are not performed.
Figure 12-5 Flowchart 3. Security for Berkeley Services
3
Entry
in server's
/etc/hosts.equiv
?
3C
Are you
superuser
?
Yes
3A2
No
rlogin
?
3E
Using
Yes
No
User
name exists
on server
?
Yes
3A
No
host
Accessing
server system
as yourself
?
Yes
3A1
No
file
3D
Cannot access
3B
No
$HOME/.rhosts
exists and has
entry for
?
3D
you
No
OK
3C1
Yes
Yes
Password
3E1
prompt
Permission
3F
denied