Devices. ISQS 6342 Spring 2004 Gurkan Ozfidan. Outline. Firewalls, Routers, Switches Wireless/Modems Remote Access Services (RAS) Telecom/Private Branch Exchange (PBX) Virtual Private Networks (VPN) Intrusion Detection Systems (IDS) Mobile Devices. What is Firewall?.
Drafting Security Policy;
Common areas of attack;
Available service means hole in your firewall;
What Do Firewalls Protect Against?
Network Address Translation;
Basic Packet Filtering;
Stateful Packet Inspection;
Access Control Lists;
access-list 101 permit tcp any 22.214.171.124 0.0.0.0 eq 80
access-list 101 deny ip any 126.96.36.199 0.0.0.0 – r u
The seven layers of the Open Systems Interconnection (OSI) Reference Model
A typical VPN might have a main LAN at the corporate headquarters of a company, other LANs at remote offices or facilities and individual users connecting from out in the field
Computer Based IDS;