Aug 07, 2025
You want to simply extend L2 all the way from the access switch to the firewall so all ports need to be L2 until they get to the L3 interface on the
May 27, 2026
Traffic staying within a zone can be routed on the core switch to reduce load on the firewall and improve performance. So in your case your end devices and printers can probably exist in the same zone.
Jul 28, 2025
My colleague argued that internet connections should not be terminated on the core switches or internal access switches but rather directly on the firewall or using dedicated external WAN switches.
Oct 22, 2025
Great information, thank you! As most projects this needs done asap which leads me to lean toward terminating their cloud tunnel at our colo on a separate firewall then using vlans down to
Jun 01, 2026
Solved: Hello, I am asking myself what others recommend for the connection between core switch and Firewall. The setup is the following: Two Catalyst 9300 Core switches in stack.
Oct 10, 2025
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Aug 02, 2025
To me if the only thing touching that core switch is the ISP connections and the firewalls - then the edge switches are behind the firewalls - that seems like a
Aug 22, 2025
This firewall hangs directly off of our core, layer 3 routing switch. (See Current Configuration image below.) My question is, should I build a layer 3 Vlan
Jan 03, 2026
On multiple occasions, I''ve used the ISP router to filter traffic before reaching the firewalls. (If I were multi-homed using my own address space, I would have to use a head-end router
Oct 22, 2025
I had a client with 3 locations and Comcast Metro E homerunning between the sites and their HQ, which had the firewall and seperate fiber line for internet. The Metro-E was layer 2, so they
May 03, 2026
The firewall remains an essential component of any network. In this guide, we''ll go through various network topologies and where a firewall is placed
Mar 12, 2026
We will soon be deploying some core switches. When going upstream (towards outside) from the core L3 switches to a set of firewalls, I''m unsure if the the links between the firewall and core switches
Jun 30, 2026
Hi, we have below architecture in which routing between different firewall take place via Internal firewalls only. We have used the core switch only
Jul 24, 2025
If you are provides internet connectivity through firewall and you needs to filter all traffic in common manner for all VLANs, you can use different VLAN between core switch and firewall. then
Nov 25, 2025
Gents, I''ve a scenario where: 1) All my servers are directly connected to the Core switch. 2) I have only one external firewall that''s sitting between the
Apr 29, 2026
As you can find through the attached file, we need to segregate the internet between two firewalls with interconnection with only one core switch on the core switch, we have created the VLANs for
Feb 14, 2026
That router behind the firewall and the L2 switch are probably going to be replaced by a L3 switch, as soon as one of the two starts showing some aging problems.
Dec 29, 2025
I recently had a spirited discussion with a colleague about the best practice for terminating internet connections in a corporate network setup. My colleague argued that internet connections should not
Sep 05, 2025
Would you connect the management interface of the firewall to an internal switch via patch cable in order to link the management interface to the management VLAN?
Sep 29, 2025
He told that firewall will take care. I told if core switch is compromised we can''t tell its impact will be. Can anybody give me a justification for our next sitting on this matter? Any
Jun 14, 2026
To ensure the best protection against DoS attacks should place the firewalls as close to the resources as possible, which will reduce the session
Apr 10, 2026
Internet modem------core switch------firewall Scenario: Internet modem - send to core switch the internet core switch - NAT configuration, vlan configuration and DHCP connection ASA
Jan 12, 2026
You get the idea, lot of options not just firewall core, and not everyone cares even these days, and security and cost and complexity are all directly proportional. That said most places are moving to
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