News

Voice networking and VoIP

• August 15, 2006 15 Aug'06

  Cisco says it can't reproduce PIX flaw

  Ever since a researcher at Black Hat outlined a flaw in the PIX firewall, Cisco has been trying to reproduce the security hole. So far, the company has been unsuccessful.

• August 15, 2006 15 Aug'06

  Cisco boosts VoIP certification

  The upgraded CCNP midlevel Cisco certification now incorporates VoIP, security and wireless to boost converged network skills among enterprise professionals.

• August 06, 2006 06 Aug'06

  VoIP call quality on the decline

  Advances in technology have made VoIP more common, but that hasn't stopped VoIP call quality from dropping steadily over the last 18 months, according to a recent study by Brix Networks.

• August 03, 2006 03 Aug'06

  Vendors reject preferential knowledge sharing

  While Cisco continues to investigate a potential PIX firewall flaw, it and other vendors say sharing security information quickly and indiscriminately is always the best policy.

• August 02, 2006 02 Aug'06

  Possible Cisco zero-day exploit revealed at Black Hat

  Details of an alleged flaw related to SIP and PIX appliances, briefly mentioned in a Wednesday Black Hat presentation, are being kept under wraps as Cisco and US-CERT investigate.

• October 12, 2005 12 Oct'05

  Quiz: What's your infosec IQ?

  We've collected our toughest questions to see how well you stand up to a challenge. Put your knowledge to the test and let us know how you do.

• September 11, 2005 11 Sep'05

  VoIP turns up the heat on firewalls

  New research shows that many organizations are increasingly concerned about VoIP security and plan to augment their firewalls within the next year, changing the landscape of the firewall market.

• July 26, 2005 26 Jul'05

  VoIP encryption to have 'Pretty Good Privacy

• June 13, 2005 13 Jun'05

  Gartner underscores five overblown threats

  Two Gartner analysts debunk five overhyped security risks they claim are causing companies to miss out on some key emerging technologies.

• August 27, 2004 27 Aug'04

  Over-specify when buying low cost replacement for Frame Relay

  A project manager reveals how a VPN saved £275,000 a year

• April 20, 2004 20 Apr'04

  Cisco SNMP flaw allows for DoS attacks

  A coding flaw in Cisco's IOS software for certain routers and switches could leave networks vulnerable to denial-of-service attacks.