ftp from jails using a proxy
geoff at apro.com.au
Wed Dec 17 07:11:09 UTC 2008
I am using FreeBSD 7.0.
I have a server with a single network interface - ext0.
On this server I have a number of jails attached to a pseudo network
interface - lo1. lo1 has the following IP address range: 10.1.1.0/24
(ifconfig create lo1)
I also have jails attached to the external interface ext0
I would like to be able to ftp from the jails on the pseudo interface (lo1) as
well as the external interface (ext). For a range of reasons I want to avoid
a pass out all option on the external interface ext0.
I therefore tried using ftp-proxy. However, I can never get the redirect to
connect to ftp-proxy in the pf rules, no matter which interface or address I
place it on.
I'm beginning to think that redirects to ftp-proxy will only work when there
is incoming traffic on a separate physical interface. Redirecting from a
pseudo interface doesn't seem to work.
See notes below for configuration.
How would you suggest I get this working? Is there are a better way to set
I'd prefer to use passive ftp if possible.
Notes on ftp-proxy configuration
I can verify the fact ftp is not be redirected via the proxy by running the
proxy in debug:
ftp-proxy -d -D 7 -b (ext0)
where (ext0) is the external IP address
I never get any connections logged by the proxy.
I can't use 127.0.0.1 as jails can't connect to this address.
In my pf rules I have
rdr on ext0 proto tcp from any to any port 21 -> (ext0) port 8021
rdr on lo1 proto tcp from any to any port 21 -> (ext0) port 8021
pass out log proto tcp from any to any port 21 label "FTP -- ACCEPT "
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