Date: Mon, 29 Dec 2003 16:30:40 -0800 (PST) From: Terry Singh <terrysingh@yahoo.com> To: freebsd-questions@freebsd.org Subject: arp request problem with firewall Message-ID: <20031230003040.81915.qmail@web40707.mail.yahoo.com>
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this is my first post to freebsd questions. MY NETWORK Internet -- WAN_IF | FIREWALL - 5.1 RELASE | LAN_IF -- LAN network The WAN_IF has several public addresses as aliases. I have about 20 servers in the LAN that require various services allowed to the public Internet. I basically am doing a "bimap" one to one mapping per server in the LAN. This all works great, meaning I can surf etc etc from any LAN server to the Internet and also, from the Internet I can get published services on LAN servers. Here's the problem: I already mentioned that each server with a 192.168.50.x address is "bimap"ed to a public address. The problem is that if I am on any of the LAN servers, and want to connect to the public address of a server in the LAN, I CANNOT. Now first of, I could connect using private addresses and of course this works like it should. But our applications have real DNS names coded in the apps so I need this to work. I know it has something to be with proxy arp so I even tried placing this line in sysctl.conf: net.link.ether.inet.proxyall=1.\ no luck. ANY IDEAS? -------------- Second problem One of the LAN servers is a FTP server. From the Internet, I can only connect using ACTIVE MODE even though I allow both 20/21/tcp inbound. Here's what happens when passive mode is used: The initial connection is accepted, but then the server sends its private address instead of its proper public address! Of course it's not gonna work! So I forced active mode and voila! it worked. What's the fix for this bugger? I now outbound FTP has some built-in proxy ftp in freebsd but what about inbound? thanks, tsingh. __________________________________ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.yahoo.com/
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