According to Infonetics Research's quarterly market share and forecast report, the companies each have 20 per cent of annual worldwide IDS/IPS product revenue in a sector that is projected to grow rapidly through 2007, when it will reach $972 million.
"Cisco and ISS are battling neck and neck for first position in the IDS/IPS market, each with about a fifth of the worldwide revenue share, and they continue to trade places every few quarters," said Jeff Wilson, principal analyst at Infonetics Research.
"Cisco still leads after coming down off their record-high first quarter, but ISS is right behind them."
The analyst firm found that worldwide intrusion detection and prevention system (IDS/IPS) product revenue grew 4 per cent between 1Q04 and 2Q04, driven by growth in host-based and in-line product segments.
Worldwide network-based IDS/IPS product units decreased 6 per cent from 1Q04, Infonetics found, but expected it will rise 28 per cent by 2Q05, with strong growth expected through 2007.
The study noted that traditional network-based IDS products account for 49 per cent of spending, with host IDS/IPS next at 28 per cent and in-line network based IDS/IPS closing in at 23 per cent.
North America was found to account for more than half of all IDS product revenue, with EMEA second with about a fifth of the share, Asia Pacific third, and CALA a distant fourth.