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To resolve the issue, do the following:

  1. Log on to IWSVA as root via SSH (for example with a SSH shell such as PuTTy).

  2. Configure the parameters in the /etc/iscan/network.ini file as follows using a text editor such as vi:

    #vi /etc/iscan/network.ini
               #socks5 proxy settings
               socks5_proxy_enabled=yes
               socks5_proxy_port=1080

  3. Run the following commands:

    • To restart the interfaces:

      #service network restart

    • To restart the IWSVA services:

       
      This will interrupt the network traffic for a few minutes so plan accordingly.

      #/etc/iscan/rcIwss restart

  4. Allow port 1080 in the firewall.

The following is an example to connect to a SFTP server using the FileZilla client software:

site manager setting 1 in filezilla

site manager setting 2 in filezilla

socks 5 proxy setting in filezilla

IWSVA supports proxying the SFTP traffic, but it does not scan it (it will just tunnel it); this is by design.

Following internal testing, using the same proxy port for SFTP traffic and HTTP traffic is not supported.

For the complete list of the SFTP settings that are possible to configure in IWSVA, refer to this KB article: Enabling SOCKS5 proxy in InterScan Web Security Virtual Appliance (IWSVA) 6.5 Service Pack 2.

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