AZTCOFW / DOCUMENTATION
Configuring NAT for VoIP Phones
Configuration guides, troubleshooting and practical advice for AZTCOFW.
Articles
3 resultsDisable scrub
In very rare circumstances, scrubbing needs to be disabled under System > Advanced , Firewall/NAT tab . In most cases this should be left at the default setting (unchecked). Only change this setting if it has been determ
Disable source port rewriting
By default AZTCO-FW software rewrites the source port on all outbound traffic. This is necessary for proper NAT in some circumstances such as having multiple SIP phones behind a single public IP registering to a single e
Set Conservative state table optimization
The default UDP timeouts in pf are too low for some VoIP services. If phones mostly work, but randomly disconnect, set Firewall Optimization Options to Conservative under System > Advanced , Firewall/NAT tab. A keep-aliv