VanDyke Software Forums

VanDyke Software Forums (
-   SecureCRT on the Mac (
-   -   Port forwarding problem (

tenwx 01-23-2018 10:36 PM

Port forwarding problem
I'm using SecureCRT for mac 8.3.1. I want to dynamic port forwarding to local port, and I also want to allow remote hosts to connect to this local port. So I open "Session Options"--"Port Forwarding"--"Add"--click "Manually select local IP address on which to allow connections"--input "" into "IP Address"--click "Dynamic forwarding using SOCKS 4 or 5".
Finally I found that it can not be accessed to open web pages by this socks5 proxy on remote client, it said "connection refused" or "empty responding". Does I miss something? :eek:

bgagnon 01-24-2018 07:39 AM

Hi tenwx,

There seems to be some info missing in between configuration and report of failure. :(

What IP address are you using for the local connection?

Mac OS only allows localhost, and the machine's IP address to be used by default.

See the How do I get port forwarding to work with loopback addresses ... FAQ on our website here.

If you are using one of the default references in the session you are trying to forward (or have already configured alternative loopback addresses via ifconfig) we will likely need to get Trace Options output. I will wait to see if the above solves your issue before providing instructions for that.

Do not post Trace Options output here in the public forum.

tenwx 01-24-2018 09:16 AM


1. Find the .ini file associated with the session that you want to modify. The .ini files are located in the SecureCRT Config folder under the subfolder called Sessions. The Global Options dialog also displays the location of the SecureCRT Config folder in the Configuration folder field.

2. Open the .ini file in Notepad.

3. Look for the following line:

S:"Port Forward Filter"=allow,,0 deny,,0

4. Modify the line to read as follows:

S:"Port Forward Filter"=allow,,0 allow,,0 deny,,0

Alternately, you could modify the line to read as follows allowing any IP address to connect to the port forward:

S:"Port Forward Filter"=allow,,0
Does port-forward filters can be modified by GUI?

bgagnon 01-24-2018 09:34 AM

Hi tenwx,

No, sorry, presently the port forwarding filters are not exposed in the GUI.

I have added this thread to a feature request in our product enhancement database to add GUI options for port forwarding filters. Should a future release of SecureCRT include this feature, notification will be posted here.

If you prefer direct email notification, send an email to and include "Feature Request - Forum Thread #12984" in the subject line or use this form from the support page of our website.

All times are GMT -6. The time now is 07:11 PM.