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08.15.2008 at 09:59AM PDT, ID: 23651918
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8.2

FTP client can't connect

Asked by bkrontz in Cisco PIX Firewall, FTP Software, File Transfer Protocol (FTP)

We have a Cisco ASA 5505 that we're running Serv-U 7.2.0.1 behind. None of our clients could make a passive connection so through a bit of troubleshooting we removed Inspect FTP and things started working fine.

Now one of our clients is unable to connect via passive or active for some reason.

Server Log:
[02] Fri 15Aug08 12:28:46 - (009148) Connected to 67.151.89.98 (local address 192.168.61.248, port 21) [03] Fri 15Aug08 12:28:46 - (009148) IP-Name: nypost.tanhelp.com (67.151.89.98) [21] Fri 15Aug08 12:28:46 - (009148) 220-RLS FTP Server
[21] Fri 15Aug08 12:28:46 - (009148) 220-       OUR COMPANY NAME
[21] Fri 15Aug08 12:28:46 - (009148) 220- [21] Fri 15Aug08 12:28:46 - (009148) 220-This is a private computer system.  This computer [21] Fri 15Aug08 12:28:46 - (009148) 220-system, including all related equipment, networks [21] Fri 15Aug08 12:28:46 - (009148) 220-and network devices, are for authorized use only.
[21] Fri 15Aug08 12:28:46 - (009148) 220-Any unauthorized use is illegal and punishable by
[21] Fri 15Aug08 12:28:46 - (009148) 220-criminal prosecution.   If you are not authorized
[21] Fri 15Aug08 12:28:46 - (009148) 220-to access this system please disconnect now.  All [21] Fri 15Aug08 12:28:46 - (009148) 220-transactions to this system are logged.
[21] Fri 15Aug08 12:28:46 - (009148) 220- [21] Fri 15Aug08 12:28:46 - (009148) 220-For access or to report problems, please contact [21] Fri 15Aug08 12:28:46 - (009148) 220 IT Support.
[20] Fri 15Aug08 12:28:46 - (009148) USER username [21] Fri 15Aug08 12:28:46 - (009148) 331 User name okay, need password.
[20] Fri 15Aug08 12:28:46 - (009148) PASS ********** [02] Fri 15Aug08 12:28:46 - (009148) User "username" logged in [21] Fri 15Aug08 12:28:46 - (009148) 230 User logged in, proceed.
[20] Fri 15Aug08 12:28:46 - (009148) SYST [21] Fri 15Aug08 12:28:46 - (009148) 215 UNIX Type: L8 [20] Fri 15Aug08 12:28:46 - (009148) FEAT [21] Fri 15Aug08 12:28:46 - (009148) 211-Extensions supported
[21] Fri 15Aug08 12:28:46 - (009148)     UTF8
[21] Fri 15Aug08 12:28:46 - (009148)     OPTS MODE;MLST;UTF8
[21] Fri 15Aug08 12:28:46 - (009148)     CLNT
[21] Fri 15Aug08 12:28:46 - (009148)     CSID Name; Version;
[21] Fri 15Aug08 12:28:46 - (009148)     HOST domain
[21] Fri 15Aug08 12:28:46 - (009148)     SITE PSWD;SET;INDEX;ZONE;CHMOD;MSG;EXEC;HELP
[21] Fri 15Aug08 12:28:46 - (009148)     AUTH TLS;SSL;TLS-C;TLS-P;
[21] Fri 15Aug08 12:28:46 - (009148)     PBSZ
[21] Fri 15Aug08 12:28:46 - (009148)     PROT
[21] Fri 15Aug08 12:28:46 - (009148)     CCC
[21] Fri 15Aug08 12:28:46 - (009148)     SSCN
[21] Fri 15Aug08 12:28:46 - (009148)     RMDA directoryname
[21] Fri 15Aug08 12:28:46 - (009148)     DSIZ
[21] Fri 15Aug08 12:28:46 - (009148)     AVBL
[21] Fri 15Aug08 12:28:46 - (009148)     MODE Z
[21] Fri 15Aug08 12:28:46 - (009148)     THMB BMP|JPEG|GIF|TIFF|PNG max_width max_height pathname
[21] Fri 15Aug08 12:28:46 - (009148)     REST STREAM
[21] Fri 15Aug08 12:28:46 - (009148)     SIZE
[21] Fri 15Aug08 12:28:46 - (009148)     MDTM
[21] Fri 15Aug08 12:28:46 - (009148)     MDTM YYYYMMDDHHMMSS[+-TZ];filename
[21] Fri 15Aug08 12:28:46 - (009148)     XCRC filename;start;end
[21] Fri 15Aug08 12:28:46 - (009148)     MLST Type*;Size*;Create;Modify*;Perm;Win32.ea;Win32.dt;Win32.dl
[21] Fri 15Aug08 12:28:46 - (009148) 211 End (for details use "HELP commmand" where command is the command of interest) [20] Fri 15Aug08 12:28:46 - (009148) PWD [21] Fri 15Aug08 12:28:46 - (009148) 257 "/" is current directory.
[20] Fri 15Aug08 12:28:46 - (009148) TYPE I [21] Fri 15Aug08 12:28:46 - (009148) 200 Type set to I.
[20] Fri 15Aug08 12:28:46 - (009148) PASV [21] Fri 15Aug08 12:28:46 - (009148) 425 Unable to set up passive listening socket.
[20] Fri 15Aug08 12:28:46 - (009148) PORT 10,100,30,25,7,91 [21] Fri 15Aug08 12:28:46 - (009148) 530 Only client IP address allowed for PORT command.
[02] Fri 15Aug08 12:29:03 - (009136) Session idle time out [21] Fri 15Aug08 12:29:03 - (009136) 421 Connection timed out - closing.
[02] Fri 15Aug08 12:29:03 - (009136) Closed session

Client Log:
Status:      Connected
Status:      Retrieving directory listing...
Command:      PWD
Response:      257 "/" is current directory.
Command:      TYPE I
Response:      200 Type set to I.
Command:      PASV
Response:      425 Unable to set up passive listening socket.
Command:      PORT 10,100,30,25,7,91
Response:      530 Only client IP address allowed for PORT command.
Error:      Failed to retrieve directory listing

What do you make of that? It looks like the client is passing the LAN IP instead of the external. What can I do about that?

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[+][-]08.15.2008 at 12:03PM PDT, ID: 22240845

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[+][-]08.15.2008 at 01:27PM PDT, ID: 22241507

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[+][-]08.16.2008 at 03:35PM PDT, ID: 22245406

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[+][-]09.09.2008 at 07:28AM PDT, ID: 22427720

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About this solution

Zones: Cisco PIX Firewall, FTP Software, File Transfer Protocol (FTP)
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Solution Provided By: bkrontz
Participating Experts: 2
Solution Grade: A
 
 
 
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