| Publisher | Network World | ||
|---|---|---|---|
| Format | HTML | Date added | 20 Nov 2000 |
| Topics | ATM, Firewalls | ||
| Downloads | 27 | ||
Firewalls are not new; but high-performance firewalls are. Historically, firewalls used software to examine every packet and then make the decision to forward or drop the packet. This made them slow.With an IP/ATM firewall accelerator, cells of the first packet are forwarded to the firewall control processor (FCP), which consults its filtering policies to determine whether to forward, drop or monitor the packet.Forwarded packets are re-injected into the cell stream, and the FCP informs the firewall inline processor of the action to take on subsequent traffic for this flow. One firewall accelerator using this technology offers a choice of OC-3c or OC-12c interfaces, performing line-rate firewalling at either speed.
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