Installing and Administering Internet Services

Chapter 12 479
Troubleshooting Internet Services
Troubleshooting the Internet Services
Flowchart 2. Security for telnet and ftp
Even though a server exists for a service, the server may not accept
connections due to the security thathas been implemented for the server.
Figure 12-4 Flowchart 2. Security for telnet and ftp
NOTE The corrections suggested in 2B1, 2C1, and 2F1 must be done by the
superuser. Also, except for the “anonymous” user ID, ftp requires
non-null passwords on remote user accounts.
2
Determine
2A
number of
Maximum
number of
connections
?
Yes
2B
No
the server
?
Yes
2C
No
Access to
Using
?
2C1
telnet or ftp
Yes
No
telnet
should work
existing
connections
See node manager
2B1
See node manager
2D
3
2E
Using
ftp
?
No
2F
Yes
Access
to ftp
?
No
Yes
2C2 2C3
See node manager
2G
$HOME/.netrc
incorrect or
nonexistent
?
Yes
No
2C4
ftp
should work
2H
fix
$HOME/.netrc
2C5
2
2C6