This is the config file from an install of ProFTPD 2.9.1. /disk01 is a read only section of the ftp server. Anonymous access is granted for everyone. In the directory /disk01/incoming you can write, but you can not overwrite or delete files or directories. This server is locked down pretty good for an anon server. Change setting to suit your needs.

The config file is named proftpd.conf. It can usually be found in the /etc dir.

# ProFTPd configuration file

# Daemon configuration 
ServerName              "FTP Server"
ServerType              standalone
DisplayConnect          /etc/issue.net
AllowOverride           off
AllowOverwrite          off
AllowForeignAddress     off
DeleteAbortedStores     on
DefaultServer           on
DeferWelcome            on
ServerIdent             off
UseReverseDNS           on
IdentLookups            off
TimesGMT                off
UseGlobbing             on
MultilineRFC2228        on
ShowSymlinks            off
RootLogin               off
RequireValidShell       no
DenyFilter              \*.*/
ListOptions             +R strict

# Lockdown connections and connection attemps
MaxClients              3 "The maximum number of allowed users (%m) are already connected."
MaxInstances            3
MaxClientsPerUser       3 "The maximum number of clients (%m) for this user already connected."
MaxHostsPerUser         3 "The maximum number of hosts (%m) for this user already connected."
MaxClientsPerHost       1 "The maximum number of clients (%m) from your host are already connected."
MaxLoginAttempts        1

# Lockdown TCP stack 
Port                    21
PassivePorts            63570 63750
SocketOptions rcvbuf    8192 
SocketOptions sndbuf    8192 
CommandBufferSize       512
tcpBackLog              5
tcpNoDelay              on
TransferRate            APPE,STOR 12000
TransferRate            RETR 12000

# Log format and location
LogFormat               default "%t %h %a %s %m %f %b %T \"%r"\"
ExtendedLog             /var/log/proftpd ALL default
SystemLog               /var/log/proftpd ALL default
TransferLog             /var/log/proftpd ALL default

# Limit login times and timeouts to drop dead clients.
TimeoutLogin            60
TimeoutIdle             60
TimeoutNoTransfer       60
TimeoutStalled          60
TimeoutSession          28800

# Setup fake properties
DirFakeGroup            on      ftp
DirFakeUser             on      ftp
DirFakeMode             0400

# User Access Control
<Limit LOGIN>
    Deny        All
</Limit>

# Anonymous configuration
<Anonymous /disk01>

   User         ftp
   Group        nogroup
   UserAlias    anonymous ftp
   HideNoAccess on
   <Limit LOGIN>
        Allow   All
   </Limit>
   <Limit ALL>
        Deny    All
   </Limit>
   <Limit PWD CWD LIST RETR>

        Allow   ALL
   </Limit>
   <Directory /disk01/incoming>
       Umask   022  022
      <Limit MKD STOR>
        Allow   All
      </Limit>
   </Directory>

</Anonymous>

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If you have a login lag problem with ProFTPD where it waits like 5 seconds before it logs in you need to turn off ident in the server config file. It's turned on by default. Put in: "IdentLookups off".

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