IPFIREWALL And FTPD PASSIVE MODE (SET) Wednesday, January 17, 2007
Savings Bond Interest Calulator
IPF Firewall and FTPD passive mode (Settings) on ipfilter
IPFIREWALL And FTPD PASSIVE MODE (SET)
IPFIREWALL And FTPD PASSIVE MODE (SET) There are two types of ftp server,
ACTIVE FTP client server
control port 21 <--------- cualquier puerto > 1024 port 20 (data port) --------> any port> 1024
The configuration IPFIREWALL for this type of FTP server would be: # ftp
21 pass in quick from 200.87.105.195/32 to
port = 21 keep state # ftp
data pass in quick from and Stock
to port = 20 keep state
PASSIVE FTP client server
control port 21 1024 <--------- cualquier puerto > ANY port
> 1024 (data port) 1024
<--------- cualquier puerto > IPFIREWALL
The configuration for this type of FTP server would be:
# ftp 21
pass in quick from 200.87.105.195/32 to
port = 21 keep state # ftp
data pass in quick from any to 15001 port 15500 keep state
The instruction "keep state" is to tell the filter that you can create a new connection if it had previously created a connection with the customer.
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