437
There's no user authentication, but access to the SIP proxy
can be restricted by client IP.
The firewall configuration of SX-GATE's Internet interface has to accept incoming UDP
packets to port 5060.
If you are using an external registrar it might be sufficient to
accept packets with specific source IPs of your VoIP provider.
Accept registrations of the following IP addresses
The SX-GATE SIP proxy will refuse registration if the client IP is not listed here. This
applies to both modes of operation (external registrar or SX-GATE as registrar).
All the addresses specified here must be connected to the SX-
GATE interface eth0.
14.9.3
POP3/SMTP proxy
The POP3/SMTP proxy allows users to retrieve mails from any POP3 server and to
send mails via any SMTP server on the Internet and still benefit from SX-GATE's anti-
virus and anti-SPAM capabilities.
Purpose of the proxy is to provide access to individual (private)
mail accounts. The regular (business) mail should be processed
by SX-GATE's mail client and server components, offering a
variety of additional features.
The POP3/SMTP proxy always operates in transparent mode. Enable the
corresponding switches in the firewall setup or enter custom DNAT rules, redirecting
POP3 or SMTP connections to port 8110.
Number of concurrent connections
This parameter limits the number of concurrent connections handled by the proxy.
