Hi

Running 1.2.26 BRI stuffed. Calls made via PSTN via ISDN interface (Junghanns).

SIP ports mapped through firewall as we often connect from outside, but all SIP 
accounts have good passwords.

However our telecoms provider picked up a few suspicious calls to places we do 
not normally call at times we do not often call.

Looking at Asterisk logs it shows SIP session from the internet connected in 
and making calls with account IDs we do not recognise - definitely none of ours.

Very few calls have been made this way, trivial cost, but it is slightly 
worrying.

Anyone any ideas on how this could be happening?

Thank

Paul


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