RE: "421 Service not available, remote server has closed connect ion\"

[Kevin_Saenz dell com]

probable it is best to try and have in yout /etc/hosts.allow file


in.ftpd: ALL

you don't need to reboot all you need to do is
/etc/rc.d/init.d/inet restart
also for security reasons have in your /etc/hosts.deny
ALL : ALL
then modify your /etc/hosts.allow for specific deamons
and ip addresses.
ie you will need to add

httpd : ALL
in.telnetd : IP addresses don't say all because once someone
finds out a security flaw in any other services they need to
telnet in, by restricting to ip addresses you can limit
access.
and any other deamons.
Another security problem is allowing accounts to be fingerd
deny access to it. As this is the way people find a way to
crack in to your site.
see how you go with that.

> (I then modified this file as per Installation Guide 11.10 pg 
> 215, then 
> rebooted. i.e., I added the following:
>    in.talkd: ALL  in.ntalkd: ALL   in.fingerd: ALL   in.ftpd: ALL)
> /etc/hosts.deny "(no entries)"
> /etc/inetd.conf "ftp stream tcp nowait root /usr/sbin/tcpd 
> in.ftpd -l -a"
> (No man page for in.ftpd.)
> My machine does not have a /home/ftp directory (all my 
> Slakware machines
> do.!)
> 
> I searched ftp//:ftp.cert.org/pub/tech_tips - no help
> I searched the install list - no help
> 
> I'll appreciate any help y'all can give.  Else it's back in 
> the box for
> another year for good old RedHat 6.1. Slakware still does a 
> good job for me.
>  
> P.S.: Wasn't there a new RPM that fixed this.  Thought I saw 
> it on a mail
> message....?
> 
> F. B. Quinn, Jr., M.D.,M.S.(ICS),P.E.
> Univ. Texas Med. Branch
> Galveston, TX
> 
> 
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