Mailinglist Archive: opensuse (770 mails)

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Re: [opensuse] connecting my telephone to the internet
  • From: Per Jessen <per@xxxxxxxxxxxx>
  • Date: Sun, 26 Aug 2012 10:12:34 +0200
  • Message-id: <k1clpi$ruo$>
James Knott wrote:

Per Jessen wrote:
Two risks -

1) the SIP sign-on (userid+password) is, AFAIK, not encrypted, so it
could be intercepted, giving someone access to use our internal
2) brute force attack trying to guess the password. It is
easily countered, but we had a case last year where someone managed
to guess a SIP userid+password. It meant a slightly higher
phone-bill that month:-)

Those problems have existed for years and are not unique to VoIP. Many
companies have discovered large long distance bills when someone found
out how to access their trunks.

No, the problem isn't new, but the exposure is much larger. I think I
see a brute force attempt about every day.

Per Jessen, Zürich (17.0°C)

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