Yajie wrote:
if there is no such a book, let's put a guideline together, so this will be
shared with anyone here, i will start with:
1. Use a decent SIP password
2. Use a decent unix account password.
3. Disable calling out via voice mail system.
4. Use different SIP port other than 5060 if you can.
5. ....
Anyone wants to continue?
Use a secure operating system (e.g., OpenBSD if you don't need line cards).
Apply software updates in a timely way - to the OS and to Asterisk and
to any
3d-party drivers.
Teach the receptionist and others there is no extension 9011! :-)
Enforce it in your dialplan.
Train receptionist and others that when somebody shows up "to fix the
computer",
check with IT to make sure a service call was actually placed BEFORE
letting them near it.
Disclaimer - this is not a complete list.
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