NAME¶
poppassd - Password change server for Eudora and NUPOP mail clients
DESCRIPTION¶
poppassd runs from inetd and listens on TCP port 106 by default. Its sole
purpose in life is to engage in short FTP-like conversations from client
applications and execute (or deny) remote password changes via the PAM
facilities configured in
/etc/pam.d/poppassd. The conversation looks
something like this:
- 200 poppassd v1.8.4 hello, who are you?
user adconrad
200 Your password please.
pass foo
200 Your new password please.
newpass bar
200 Password changed, thank-you.
quit
200 Bye.
As can be seen from the example above, unencrypted passwords are transmitted
over the network. Because of this, it is recommended that you use this daemon
only for local loopback password changing (for instance, from Perl, Python, or
PHP web applications on the same server) and block all non-local access to
port 106, either via tcpwrappers (
/etc/hosts.deny) or with appropriate
firewall rules.
If sending unencrypted passwords over the wire doesn't bug you terribly much (as
in the case of an ISP with hundreds of POP3 mail accounts), this daemon can
provide a simple way for some of your clients (those running mail clients that
actually support this protocol) to easily change their passwords.
FILES¶
- /etc/pam.d/poppassd
- Contains the PAM configuration for poppassd. By default on
Debian, it merely includes the common-auth and common-password files,
which should work in most cases. If this doesn't cut it for your site,
tailor to suit.
SEE ALSO¶
pam(7),
inetd(8),
hosts.deny(5)
AUTHOR¶
This manual page was written by Adam Conrad <adconrad@0c3.net> for the
Debian operating system.
