@pvr2002:
I am in the process of familiarizing myself with the Cisco IOS and have a Cisco 3750 (with routing functionality). Please see attachment for current working network setup.
I am trying to enable IP routing on the 3750 and only route internet traffic through to the Virtual PFSense box. I have successfully setup IP routing and ACLs to prevent vlans from talking on the switch. However, I am running into issues determining how to get the switch to forward traffic onto the Virtual PFSense box. I attempted to utilize RIP between the switch and PFSense, but was only able to get access from VLAN100 (even if shutting off all ACLs) to the PFSense VLAN100 Interface. The other 3 VLANs did not communicate at all. Can anyone provide any insight as to what may be the issue?
Thanks in advance.
1. Decide whether you want cisco switch to route between vlans and route all the traffic to pfsense through a interconnect network ( pink colored in Derelict's diagram) or (2) .
In this case (1) you need to have VLANs created on the L3 switch, assign ports to VLANs , enable ip routing by configuring a routed port on L3 switch, static route on L3 sw to route all traffic to the transit IP of pfSense. On Pfsense you also need to add static routes to all your vlans through pfsense transit IP address. ( otherwise routing won't work). In this case you also have to configure DHCP helper or server on each L3 interface …. or use static IP addresses. Also configure outgoing rules on pfSense to allow traffic. Don't use routing protocols only if you have multiple network with multiple routers...
2. Use L3 sw as a L2 sw ( similar to your drawing , create vlans, assign ports to vlans, create trunk ports on L3 sw and on vSwitch + pfSense, configure vlan interfaces on pfSense - LAN or wan ( for wan you also add gateway IP address), enable dhcp on each interface , enable outgoing rules on each vlan ... .
If you have a small network I would recommend to route all traffic to pfsense box ( 2) so you can also inspect inter vlan traffic if you wish ( from security perspective).
Check this topic also : https://forum.pfsense.org/index.php?topic=57239.0
you can dump ... show run conf
BR,
Adrian