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SECURIY ISSUE: VC400 being brute forced and dont stop calling
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complex1 Offline
3CX Adv. Cert. Engineer
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Posts: 837
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Post: #2
RE: SECURIY ISSUE: VC400 being brute forced and dont stop calling
(01-04-2019 11:53 AM)HenriqueMachado Wrote:  Hello! Henrique from Brazil

Today my VC400 started receiving calls one after the other. When I look who is calling it show like SQL Injection codes:


admin' --
admin' #
admin'/*
' or 1=1--
' or 1=1#
' or 1=1/*
1' or '1' = '1
') or '1'='1--
') or ('1'='1--


What can I do? Is there a way to protect my VC400 from these scanners? Like a password before calling or something like that?

Thanks

Hi Henrique,

May I suggest to do next steps?

- Disconnect the VC400 from your LAN.
- Check your router firewall configuration if the right ports are set.
- Reset VC400 Codec to factory default.
Using tiny objects (for example, the paper clip) to press and hold the reset button for 15 seconds until the screen turns black.
- Change User password into a strong password (>16 char) or disable the user mode
- Change Admin password into a strong password (>16 char)
- Connect the VC400 to your LAN
- (Re)configure the device and check again.

Hope this will help.

Best regards,
Frank.

Dutch is my native language, not English. Apologies for my imperfect grammar.
01-04-2019 01:02 PM
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RE: SECURIY ISSUE: VC400 being brute forced and dont stop calling - complex1 - 01-04-2019 01:02 PM

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