SUMMARY: Jails and loopback interfaces

[Michal Mertl]

One solution which I think hasn't been mentioned here is to have jails
on RFC1918 IP addresses or loopback (127/8) and have a packet filter
redirect/forward just the visible services to the internal IP addresses.

I haven't tried it myself but according to others it works.

Michal

Cyril Jaouich píše v st 08. 03. 2006 v 16:17 -0500:
> Well well, 
> 
>   I have received a lot of answers and solutions.
> 
> Setup:
>  Server A hosts a jail B
>  Jail B is Webserver and Database server
> Want I want to do:
>  Limit acces to the database by binding the database on the loopback address
> (127.0.0.1).
> 
>   Since you can only use 1 ip in a jail and I am running a Web server it has to
> be a routed address (non RFC1918). Also, when a process inside a jail connects
> to the loopback (127.0.0.1), you hit the jail's ip and not the loopback ip of
> the master server (where the jail sits).
> 
>   In order to secure my database, it's best to use PF to limit exterior acces.
> You can also setup another jail that will use an RFC1919 address. 
> 
> Thanks to:
>  Bigby Findrake
>  Axel Scheepers
>  Josh Bell
>  Ricardo A. Reis
>  Jon
> 
> -Cyril
> 
> 
> 	
> 
> 	
> 		
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