Red Hat APPLICATION SERVER - JONAS Guía de instalación descargar pdf (Pagina 44)

Warning

If you are limiting the port range for passive connections, you must also configure

the VSFTP server to use a matching port range. This can be accomplished by

adding the following lines to /etc/vsftpd.conf:

pasv_min_port=10000

pasv_max_port=20000

You must also control the address that the server displays to the client for

passive FTP connections. In a NAT routed LVS system, add the following line to

/etc/vsftpd.conf to override the real server IP address to the VIP, which is

what the client sees upon connection. For example:

pasv_address=n.n.n.n

Replace n.n.n.n with the VIP address of the LVS system.

For configuration of other FTP servers, consult the respective documentation.

This range should be a wide enough for most situations; however, you can increase this number

to include all available non-secured ports by changing 10000:20000 in the commands below to

1024:65535.

The following iptables commands have the net effect of assigning any traffic addressed to the

floating IP on the appropriate ports a firewall mark of 21, which is in turn recognized by IPVS

and forwarded appropriately:

/sbin/iptables -t mangle -A PREROUTING -p tcp -d n.n.n.n/32 --dport 21 -j MARK

--set-mark 21

/sbin/iptables -t mangle -A PREROUTING -p tcp -d n.n.n.n/32 --dport

10000:20000 -j MARK --set-mark 21

In the iptables commands, n.n.n.n should be replaced with the floating IP for the FTP virtual

server defined in the VIRTUAL SERVER subsection of Piranha Configuration Tool.

Warning

The commands above take effect immediately, but do not persist through a

reboot of the system. To ensure network packet filter settings are restored after a

reboot, see Section 6, “Saving Network Packet Filter Settings”

Finally, you need to be sure that the appropriate service is set to activate on the proper

Chapter 3. Setting Up LVS

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Red Hat APPLICATION SERVER - JONAS Guía de instalación Pagina 44