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Re: portfw or direct accessability

To: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: portfw or direct accessability
From: "Alexandre CASSEN" <alexandre.cassen@xxxxxxxxxxxxxx>
Date: Tue, 14 Aug 2001 15:42:54 +0100
Re,

>thanx for the fast advice. but i'm not sure you understood correctly
>what i wanted. i just simply want a port-fw on vip:port1 to
>webserver_1:22 and vip:port2 to webserver_2:22.  because it's not very
>fine to guess what server can be reached.

The subject was port forwarding OR direct access :) I prefer direct access
because remote visibility of your realserver pool is managed by a firewall
(or with specials chains directly onto your LVS director) ((admin stream
are LVS independant))

Anyway you can use LVS to handle your pb using a different IP port number
for each realserver. So you create something like :

Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port          Forward Weight ActiveConn InActConn
TCP  192.168.100.10:2222 rr persistent 50
  -> 192.168.200.1:22             Masq    1      0          0
TCP  192.168.100.10:2223 rr persistent 50
  -> 192.168.200.2:22             Masq    1      0          0

=> a VS with only RS where 192.168.200.1 & 2 are your RS pool. VIP =
192.168.100.10

I recommand you starting sshd in standalone mode. I just try this setup on
my devel env using SSH 3.0.1 coming from ssh.com.

regards,
Alexandre



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