Browsed by
Category: Fortinet

FortiGate as a DNS slave to a Windows AD DNS Master v5.4

FortiGate as a DNS slave to a Windows AD DNS Master v5.4

This post goes over how to setup a FortiGate firewall as a slave DNS server to a Windows DNS master.  This is a great feature to enable for branch offices or even as basic redundancy to a single Windows DNS server. Starting on the Windows DNS Server: Launch DNS Manager Double click on the zone you want to replicate and locate the SOA record and edit it. Go to the Zone Transfer tab and enable zone transfers.  You can leave…

Read More Read More

FortiGate WAN Link Monitor v5.4

FortiGate WAN Link Monitor v5.4

You’ve setup your FortiGate and have multiple Internet providers.  You are using basic failover for your providers, you want to monitor the links to automate the failover but you don’t want to setup SD-WAN or WAN LLB. What you want is link-monitor, or what used to be called ping server detect. With link-monitor setup, when the target detects a failure the routes for WAN1 will be deleted and traffic will go to WAN2.  When the target detects success the routes…

Read More Read More

FortiGate SSL VPN Internal DNS Resolution v5.4

FortiGate SSL VPN Internal DNS Resolution v5.4

You’ve setup your FortiGate firewall, configured SSL VPN and deployed your clients.  Your users can log in but they need to use fully qualified domain names to resolve hosts internally. To create a better user experience, you want to append your DNS domain name to your SSL VPN users when they connect, just like when they are in the office.  It’s pretty straight forward assuming you already have SSL VPN configured, if you don’t follow this guide: FortiGate SSL VPN…

Read More Read More

FortiGate Agent Based FSSO AD Integration v5.4

FortiGate Agent Based FSSO AD Integration v5.4

If you want to report on user Internet usage and possibly even define access rules based on your Active Directory groups this document is for you.  We’ll install the FSSO Collector Agent in basic mode, identify the groups we are interested in and setup the FortiGate. The FSSO Collector will monitor the Windows security logs on your domain controller for log on and log off events, these events contain the IP address of the computer that logged on or off…

Read More Read More

FortiGate Managed Access Point Tunnel Mode v5.4

FortiGate Managed Access Point Tunnel Mode v5.4

This example will use a FortiGate firewall to manage FortiAP access points.  We’ll create what’s called a tunnel-mode wireless network, which means the wireless clients will be on a different network then the wired clients.  The FortiGate firewall will also provide DHCP services to both wired and wireless clients. Creating the wireless network Pick an interface that will have the AP connected to it, this can be on the local FortiGate or a local FortiGate port that’s connected to a…

Read More Read More

FortiGate Managed Access Point Bridge Mode v5.4

FortiGate Managed Access Point Bridge Mode v5.4

This example will use a FortiGate firewall to manage FortiAP access points.  We’ll create what’s called a bridge-mode wireless network, which means the wireless clients will be on the same network as the wired clients.  The FortiGate firewall will also provide DHCP services to both wired and wireless clients. I’ll assume you already have an outbound policy created to allow traffic from inside your network out to the Internet.  Because in this example the wired and wireless traffic will be…

Read More Read More

FortiGate Periodically Dropping Comcast Connection v5.4

FortiGate Periodically Dropping Comcast Connection v5.4

This quick post is to document an issue we’ve seen enough times to make this change part of our standard deployment. Issue:  New FortiGate installation seems to drop Comcast Internet connection for a minute periodically. This isn’t a link monitor issue or anything complex.  The problem comes down to some Comcast modems, other providers I’m sure have a similar issue. When a FortiGate is deployed, the FortiGaurd service uses port 53 for updates.  When these impacted modems see non DNS…

Read More Read More

FortiGate Category Filtering Office 365 Issue v5.4

FortiGate Category Filtering Office 365 Issue v5.4

Content filtering is a great feature with the FortiGate firewalls but the nature of what’s happening behind the scenes means some web sites do not like to be inspected and some users don’t fit the standard policy. For example, if you enable blocking unrated categories with your web filtering, and you have Office 365 there’s a good chance your users will start getting errors with Office 365.  A bit of tweaking fixes this, but it would be better to know…

Read More Read More

FortiGate Geo Blocking v5.4

FortiGate Geo Blocking v5.4

I’m frequently asked to block users from accessing certain countries and it can help prevent exploits if your users have no business connecting to some of these countries.  This is called Geo Blocking and it’s pretty easy to setup. Setup address object for the country you want to block Navigate to Policy & Objects > Addresses and click Create New Address Enter the name of the country in question Change the Type to Geography Change the Country to the country…

Read More Read More

FortiGate Content Filtering Per User Override v5.4

FortiGate Content Filtering Per User Override v5.4

Content filtering is a great feature with the FortiGate firewalls but the nature of what’s happening behind the scenes means some web sites do not like to be inspected and some users don’t fit the standard policy. Issue:  Blocking A Category but need to create an exception So maybe your organization blocks the Social Networking category for all users but now HR can’t check out candidates and they need access.  We’ll fix this with an exemption and a new policy…

Read More Read More

FortiGate Block Website v5.4

FortiGate Block Website v5.4

This post shows you how to block an individual website with a static URL filter. Navigate to Security Profiles > Web Filter Scroll down to Static URL filter and enable URL Filter (if it’s not already) Click Create Enter the url you want to block.  I’m using facebook.com for this example and since I want to block all things facebook.com I’m making this a Wildcard block and using *facebook.com for the entry.  Click OK Make sure you have an outbound…

Read More Read More

FortiGate Outbound Static NAT using IP Pools v5.4

FortiGate Outbound Static NAT using IP Pools v5.4

Say you have a block of static IP addresses from your provider.  You are using one of them for the external IP address of your FortiGate, this is typically applied as the NAT address for your inside traffic to access the Internet. If you have an internal server that you want to use one of your other static IP addresses instead this is the process for you.  This is commonly done for something like an internal mail server that you…

Read More Read More

FortiGate Inbound Port Forwarding using VIP’s v5.4

FortiGate Inbound Port Forwarding using VIP’s v5.4

This article goes over creating an inbound port forward NAT rule on a FortiGate device.  This allows inbound access to a resource behind your firewall using your public IP address. For this example we’ll create a rule that allows HTTP (port 80) and SMTP (port 25) pointed at one internal server resource. The external IP address (WAN interface side) for this example is 1.1.1.1 The internal IP address (inside interface side) for this example is 2.2.2.2 First we’re going to…

Read More Read More

FortiGate AD Authentication for SSL VPN v5.4

FortiGate AD Authentication for SSL VPN v5.4

Active Directory is a great authentication system, already in use on your network if you have a Windows Server based infrastructure so it makes sense to leverage for authenticating your SSL VPN users rather then creating separate, local login accounts. Before you set this up on the FortiGate you first need to setup a service account on your windows server.  Yes, you could use an already existing account but it’s advisable to use something separate so if/when you need to…

Read More Read More

FortiGate Dual ISP Failover both active v5.4

FortiGate Dual ISP Failover both active v5.4

The premise.  You have a FortiGate and you have two ISP connections.  Maybe the speeds aren’t that close together and one of them is really just for failover so load balancing is out but you want BOTH WAN connections to respond from the outside. It’s pretty straight forward.  Configure your IP addressing on both WAN interfaces.  Let’s assume WAN1 is going to be the primary connection. The secret sauce is in the Distance and Priority for your static routes.  You…

Read More Read More