Subject Acessing an IB server over the Internet
Author labcore
Hi folks!

Does anyone really know how can I make a computer running IB "see"
another one (running IB, too) over the Internet (in order each of
them can access and alter data on each other's database)? Some useful

- I've already opened port 3050 (for TCP & UDP) on both machines, but
it didn't work.

- The type of connection is broadband ADSL (PPPoE).

- Both machines connect to the Internet through a router (SpeedStream

- The router's built-in firewall is ON (but even when it is OFF the
connection between the computers doesn't succeed)

- NAPT is enabled (if I disable it, computers can't access the

- When NAPT is ON, both computer's routers don't answer to the PING
command sent to their IP addresses.

- When NAPT is OFF, both computers answer to the PING command and can
be accessed by Telnet.

- The FIXED IP of both computers is (netmask There's no IP conflict, since they are on different
networks and under NAPT.

- The IP of both routers is (netmask

- There's no DHCP server present.

- The "static route list" of both routers is empty.

- There's no DMZ configured.

- "UPnP" is disabled on both routers.

- The following events are being filtered and/or logged by both

Same Source and Destination Address Filter Log
Broadcast Source Address Filter Log
LAN Source Address On WAN Filter Log
Invalid IP Packet Fragment Filter Log
TCP NULL Filter Log
TCP FIN Filter Log
TCP Xmas Filter Log
Fragmented TCP Packet Filter Log
Fragmented TCP Header Filter Log
Fragmented UDP Header Filter Log
Fragmented ICMP Header Filter Log
Inconsistent UDP/IP header lengths Filter Log
Inconsistent IP header lengths

- "RIP" and "Dynamic DNS" are disabled on both routers.