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This is the support site for Andrews & Arnold Ltd, a UK Internet provider. Information on these pages is generally for our customers but may be useful to others, enjoy!

VoIP Security: Difference between revisions

Use the right Grandstream option - "Disable Direct IP calls" is for making calls, not receiving them
(Mention Grandstream's "Disable Direct IP calls". Just had my first dodgy SIP call - despite the firewall rules)
(Use the right Grandstream option - "Disable Direct IP calls" is for making calls, not receiving them)
Solution: Firewall SIP as explained above.
 
Also some equipment may support the disabling of calls being sent direct from the Internet. For example, Grandstream firmware often has a feature ''DisableAllow DirectIncoming IPSIP callsMessages from SIP Proxy Only'', which is worth using (unless you need to accept such calls).
 
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