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4.2

NAT problem

Asked by Tessai in Miscellaneous Networking, Networking Hardware Firewalls, File Transfer Protocol (FTP)

Tags: ip, nic, rules

Hi,

I have a webserver and ftpserver in a DMZ IP : 192.168.10.2 sub : 255.255.255.0 gateway 192.168.10.1

192.168.10.1 is a NIC on my FW,
on this FW I have as well a LAN 192.168.1.0 sub 255.255.255.0 gateway 192.168.1.101 => second NIC onmy FW.
And my third NIC on my FW has a public IP with gateway, my router

From my LAN, I have access to whatever I want, from my DMZ aswell BUT, I can not make my webserver or ftp server available from the internet.

When I surf on the internet from my DMZ my public IP appears well if I do a netstat from the target server.

What I did is :

route add <Public_IP_DMZ> <Internal_IP_DMZ>
arp -s <Public_IP_DMZ> <MAC_adress_NIC_GAteway_that leads to the router>

I did it without that and it workde fine thanks to my FW rules

Now, when I check the log of my FW it says that the traffic from outside to the ftpserver is accepted but... I can not have access to this ftpserver ! It is then blocked elsewhere but where ???

Can someone help me please ?

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NAT problem

Asked by Tessai in Miscellaneous Networking, Networking Hardware Firewalls, File Transfer Protocol (FTP)

Tags: ip, nic, rules

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