diff options
| -rw-r--r-- | libexec/ftp-proxy/ftp-proxy.8 | 35 |
1 files changed, 20 insertions, 15 deletions
diff --git a/libexec/ftp-proxy/ftp-proxy.8 b/libexec/ftp-proxy/ftp-proxy.8 index dfd48c60b30..11b2be79dda 100644 --- a/libexec/ftp-proxy/ftp-proxy.8 +++ b/libexec/ftp-proxy/ftp-proxy.8 @@ -1,4 +1,4 @@ -.\" $OpenBSD: ftp-proxy.8,v 1.24 2002/10/11 20:32:10 dhartmei Exp $ +.\" $OpenBSD: ftp-proxy.8,v 1.25 2002/11/27 16:57:39 henning Exp $ .\" .\" Copyright (c) 1996-2001 .\" Obtuse Systems Corporation, All rights reserved. @@ -159,19 +159,21 @@ is run from and requires that FTP connections are redirected to it using a .Em rdr rule. -A typical way to do this would be to use a rule such as +A typical way to do this would be to use a +.Xr pf.conf 5 +rule such as .Pp -rdr on xl0 proto tcp from any to any port 21 -> 127.0.0.1 port 8021 +.Bd -literal + int_if = xl0 + rdr on $int_if proto tcp from any to any port 21 -> 127.0.0.1 port 8021 +.Ed .Pp -in -.Xr pf.conf 5 -(this example assumes xl0 is the interface facing an internal network). .Xr inetd 8 must then be configured to run .Nm ftp-proxy on the port from above using .Pp -127.0.0.1:8021 stream tcp nowait root /usr/libexec/ftp-proxy ftp-proxy + 127.0.0.1:8021 stream tcp nowait root /usr/libexec/ftp-proxy ftp-proxy .Pp in .Xr inetd.conf 5 . @@ -187,29 +189,32 @@ proxy forwards it to the client. The .Xr pf.conf 5 rules need to let pass connections to these proxy ports -(see options -u, -m and -M above) in on the external interface. +(see options -u, -m and -M above) out on the external interface. The following example allows only ports 49152 to 65535 to pass in -statefully (assuming xl1 is the external interface): +statefully: .Bd -literal -block in on xl1 proto tcp all -pass in on xl1 proto tcp from any to xl1 port > 49151 keep state + block out on $ext_if proto tcp all + pass out on $ext_if proto tcp from $ext_if to any \\ + port > 49151 keep state .Ed .Pp -Alternatively, rules make use of the fact that by default, +Alternatively, rules can make use of the fact that by default, .Nm ftp-proxy runs as user "proxy" to allow the backchannel connections, as in the following example: .Bd -literal -block in on xl1 proto tcp all -pass in on xl1 proto tcp from any to xl1 user proxy keep state + block out on $ext_if proto tcp all + pass out on $ext_if proto tcp from $ext_if to any user proxy keep state .Ed .Sh SEE ALSO .Xr ftp 1 , .Xr pf 4 , .Xr hosts.allow 5 , .Xr hosts.deny 5 , +.Xr inetd.conf 5 , .Xr pf.conf 5 , +.Xr inetd 8 . .Xr pfctl 8 , -.Xr syslogd 8 +.Xr syslogd 8 . .Sh BUGS Extended Passive mode (EPSV) is not supported by the proxy and will not work unless the proxy is run in network address translation mode. |