July 24, 2008 08:35pm pdt

1. giltjr 42,425
2. omarfarid 19,875
3. rwaldicott 6,100
4. AllKnowing1 5,600
5. shakoush... 4,900
6. jason1178 4,500
6. and235... 4,500
8. meverest 4,400
9. mihapi 4,300
10. RubalJ 4,000
10. stevenb01 4,000
12. b0lsc0tt 3,750
13. keith_ala... 3,725
14. PeturIngiE... 3,500
14. arrkerr1... 3,500

1. giltjr 52,625
2. omarfarid 25,175
3. rwaldicott 21,039
4. arrkerr1... 10,500
5. meverest 7,900
5. ygoutham 7,900
7. keith_ala... 7,525
8. AllKnowing1 5,600
9. ravenpl 5,550
10. shakoush... 4,900
11. uetian1707 4,500
11. jason1178 4,500
11. and235... 4,500
14. mihapi 4,300
15. stevenb01 4,000
15. RubalJ 4,000
15. BradGroux 4,000
15. knightEkni... 4,000

01.10.2008 at 11:47AM PST, ID: 23073663

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6.8

FTP Port Forwarding Passive Mode

Zones: FTP Servers, Network Routers, TCP/IP

Tags: FileZilla, FileZilla, 0.9.25, CISCO, Router, 1720

I have setup FileZilla on a server that is behind a CISCO 1720 Router. Obviously it needs to run in passive mode using port forwarding and supporting passive connections.

What I have done is:

In FileZilla:
- assigned the real Internet IP in the passive settings
- assigned the port range 40100 - 40104
- created a test account

On the CISCO 1720 I have attempted to create the port forwarding as follows:

ip nat inside source 192.168.0.10 tcp 21 interface Ethernet 0 21
ip nat inside source 192.168.0.10 tcp 20 interface Ethernet 0 20
ip nat inside source 192.168.0.10 udp 20 interface Ethernet 0 20
ip nat inside source 192.168.0.10 tcp 40100 interface Ethernet 0 40100
ip nat inside source 192.168.0.10 tcp 40101 interface Ethernet 0 40101
ip nat inside source 192.168.0.10 tcp 40102 interface Ethernet 0 40102
ip nat inside source 192.168.0.10 tcp 40103 interface Ethernet 0 40103
ip nat inside source 192.168.0.10 tcp 40104 interface Ethernet 0 40104

When I am connecting to my real Internet IP FTP (trying to simulate as if I am connecting from outside) I get the following error: WSAECONNREFUSED (No connection could be made because the target computer actively refused it. This usually results from trying to connect to a service that is inactive on the foreign hostthat is, one with no server application running)

PS:

Connecting to the FTP using internal LAN address works perfectly, only from outside I get WSAECONNREFUSED

Looking forward to solutions.

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Question Stats

Zone: Software

Question Asked By: Barbulescu

Solution Provided By: newborn1281

Participating Experts: 1

Solution Grade: B

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