You can configure up to 500 firewall rules in each security policy in Cisco vManage.įor packets coming from Overlay to Service side, the source VPN of the packet is defaulted to the destination VPN (service Service NAT support is added for FTP ALG on the client and not on the FTP (NAT-DIA), Service NAT, and Enterprise Firewall. The router provides Application Layer Gateway (ALG) FTP support with Network Address Translation – Direct Internet Access Not want traffic to flow in the other direction, from VPN 3 to VPN 1. In this scenario, we want data traffic to flow from VPN 1 to VPN 3, but we do VPN 2 are denied access to these resources. Two VPNs in this scenario, only users in one of them, VPN 1, are allowed to access the resources in VPN 3, while users in These resources could be printers or confidential customer data. Resources that you want to restrict access to. The following figure shows a simple scenario in which three VPNs are configured on a router. For such a flow, you must create a service-policy that will match and pass the return traffic. Pass-Allow the packet to pass to the destination zone without inspecting the packet's header at all. Not need to create a service-policy that matches the return traffic. Inspect-The packet's header can be inspected to determine its source address and port. When a session is inspected, you do Matching flows that are accepted can be processed in two different ways: Zone pair-A container that associates a source zone with a destination zone and that applies a firewall policy to the traffic Nonmatching flows are dropped by default. Matching flows for prefixes, ports, and protocols can be accepted or dropped, and the packet headers can be logged. Prefixes, IP ports, the protocols TCP, UDP, and ICMP. A VPN can be part of only one zone.įirewall policy-A security policy, similar to a localized security policy, that defines the conditions that the data trafficįlow from the source zone must match to allow the flow to continue to the destination zone. A VPN can be part of only one zone.ĭestination zone-A grouping of VPNs where the data traffic flows terminate. Source zone-A grouping of VPNs where the data traffic flows originate. Zone configuration consists of the following components: In your overlay network so that you can control all data traffic that passes between zones. Grouping VPNs into zones allows you to establish security boundaries A zone is a grouping of one or more VPNs. Traffic flows that originate in a given zone are allowed to proceed to another zone based on the policy between the The Enterprise Firewall uses a flexible and easily understood zone-based model for traffic inspection, compared to the olderĪ firewall policy is a type of localized security policy that allows stateful inspection of TCP, UDP, and ICMP data trafficįlows. Zone-Based Firewall Configuration Examples.Cisco’s Enterprise Firewall feature uses a flexible and easily understood zone-based model for traffic inspection, compared
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