On 09/27/2012 01:58 AM, muiz wrote:
- Gateway (FC6) 1.1) eth0: lan static IP: 192.168.1.20 1.2) eth1: external public static IP: 113.89.142.80 2.3) Shorewall-3.2.8 is running
This is extremely old, and you are allowing access to SSH and DNS services on the firewall itself. ISC Bind, at least, has security problems that should be patched. I strongly recommend that you upgrade this system.
- I want to forward internet access FTP and SSH to FTP Server: 3.1) 113.89.142.80: 20 -> 192.168.1.231:20 udp (FTP) 3.2) 113.89.142.80: 21 -> 192.168.1.231:21 tcp (FTP) 3.3) 113.89.142.80: 2222 -> 192.168.1.231:22 tcp (SSH)
One: FTP doesn't use UDP, regardless of what you see in the services file. You don't need to forward UDP.
Two: Port 20 is used for outbound connections from an active mode FTP server. You don't need to forward port 20 in to your server, ever.
- Shorewall settings: 4.1 interfaces #ZONE INTERFACE BROADCAST OPTIONS net eth1 113.89.142.255 norfc1918,arp_filte lan eth0 detect arp_filter ovpn tun0 - #LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE
Although it doesn't make much difference, you typically don't need to specify your broadcast address.
4.4 rules #SECTION RELATEDSECTION NEW ACCEPT all fw tcp ftp <<< it works for local FTP service (tested) ACCEPT all fw udp ftp <<< it works for local FTP service ACCEPT all fw tcp 2222 ACCEPT all fw tcp ssh,domain Ping/ACCEPT net fw ACCEPT all fw tcp 5222 ACCEPT all fw udp 5222 ACCEPT:info all $FW tcp 22 DNAT net lan:192.168.1.231 tcp 21 DNAT net lan:192.168.1.231 udp 20 DNAT net lan:192.168.1.231:22 tcp 2222 #LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE
Your ACCEPT rules are blocking your DNAT rules. They're not needed.
I've never actually seen the Ping/ACCEPT syntax before, so I'm going to assume that entry is correct. It doesn't exist in Shorewall 4+.
Your rules should contain only this (assuming you're actually running an XMPP server on your firewall):
Ping/ACCEPT net fw ACCEPT:info all fw tcp 22 ACCEPT all fw tcp domain ACCEPT all fw udp domain ACCEPT all fw tcp 5222 DNAT net lan:192.168.1.231 tcp 21 DNAT net lan:192.168.1.231:22 tcp 2222