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The questions that I have: 1. What is the best practice in this scenario? I do not want to put anomalies on it as it might fail legit traffic. AM I right in my assumpton that IP Ssignatures only work on particular ports and that not all ports might be protected maybe there is no known vulnerability?
If I want to make sure that all traffic that comes through external interface on the device is being scanned for all Windows etc vulnerabilities, how do I achieve that?
I still have to have a rule say the very last rule for Deny all that has this profile enabled on it? I do not want to put the rule that scans everything on all rules, as most of them do just particular ports.
Thanks for your input. Gold Member. Hi, Thanks for your reply. This kinda confirms my initial thought - looks like I have to do it on every rule. Latest Posts. Don't understand how to do remote install.
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FortiVoice Best Practices: Securing Your Phone System
Stay logged in.The following section contains a list of best practices for wireless network configurations with regard to encryption and authentication, geographic location, network planning, power usage, client load balancing, local bridging, SSIDs, and the use of static IPs. It is best practice to always enable the strongest user authentication and encryption method that your client supports. Fortinet recommends the following security, in order of strongest to weakest:.
Ensure that the FortiGate wireless controller is configured for your geographic location. This ensures that the available radio channels and radio power are in compliance with the regulations in your region. The maximum allowed transmitter power and permitted radio channels for Wi-Fi networks depend on the region in which the network is located. By default, the WiFi controller is configured for the United States.
If you are located in any other region, you need to set your location before you begin configuring wireless networks. The location setting can only be changed from CLI. To change the country to France, for example, enter the following:. Using an incorrect geographic location is a common error that can lead to unpredicable results on the client side.
It is recommended that you perform a proper site survey prior positionnig the wireless access point. In order to evaluate the coverage area environment, the following criterias must be taken into account:. However, prior to installing the access points, be sure to determine the RF channel s you plan to use.
This will ensure that users can roam throughout the facility with substantial performance. To avoid co-channel interference, adjacent Wi-Fi APs must be configured to use non-overlapping channels.
It is recommended to statically configure the non-overlopping channels on every access point, using one Custom AP profile per AP or group of APs. Reducing power reduces unwanted coverage and potential interference to other WLANs. Areas of unwanted coverage are a potential security risk. If possible, reduce the transmitter power of your wireless access point so that the signal is not available beyond the areas where it is needed.
Auto Tx Power Control can be enabled to automatically adjust the transmit power. In cases where customers complain about slow wireless traffic through a FortiAP, it might be necessary to try to reduce the possibility of RF interference. It is best practice not to locate FortiAPs near steel beams or other interfering materials.
You can try using a wireless sniffer tool to collect the wireless packets and then analyze the extent of air interference.
A common mistake is spacing FortiAPs based upon the 5Ghz radio frequency. The 2.Once you configure the FortiGate unit and it is working correctly, it is extremely important that you backup the configuration. In some cases, you may need to reset the FortiGate unit to factory defaults or perform a TFTP upload of the firmware, which will erase the existing configuration.
In these instances, the configuration on the device will have to be recreated, unless a backup can be used to restore it. It is also recommended that once any further changes are made that you backup the configuration immediately, to ensure you have the most current configuration available. Should anything happen during the upgrade that changes the configuration, you can easily restore the saved configuration.
Always backup the configuration and store it on the management computer or off-site. The latter two are configurable through the CLI only. You can use secure copy protocol SCP to download the configuration file from the FortiGate unit as an alternative method of backing up the configuration file or an individual VDOM configuration file.
Use the same commands to backup a VDOM configuration by first entering the commands:. Performing a configuration backup Once you configure the FortiGate unit and it is working correctly, it is extremely important that you backup the configuration.
Select Encrypt configuration file. Encryption must be enabled on the backup file to back up VPN certificates. Enter a password and enter it again to confirm it. You will need this password to restore the file. Select Backup. The web browser will prompt you for a location to save the configuration file. The configuration file will have a.Although your FortiMail unit will catch almost all threats that are sent to your network, there are some things you should be aware of if you want to maximize security.
Use a combination of recipient verification and sender reputation to prevent directory harvest attacks DHA. It is a common method of attack made by spammers. Spammers utilize this reponse to guess and learn valid recipient address. Spammers may use the DSN to bypass antispam measures. Many antispam mechanisms may be unable to detect the difference between a legitimate and spoofed DSN. Select Use antispam profile settings for the Bounce verification action option.
Finally, verify both outgoing and incoming email is routed through the FortiMail unit. The FortiMail unit cannot tag email, or recognize legitimate DSN for previously sent email, if all email does not pass through the unit. Skip to content Although your FortiMail unit will catch almost all threats that are sent to your network, there are some things you should be aware of if you want to maximize security.
Always remember to save a backup copy of the running config before making any changes as any changes done to the Fortigate are committed instantly. Below are the guidelines for best practice to ensure system performance and maximum efficiency of your firewall. If there are Best Practices that you want to share, please dont hesitate to email me so I can add it to the list. You are commenting using your WordPress.
You are commenting using your Google account. You are commenting using your Twitter account. You are commenting using your Facebook account. Notify me of new comments via email. Notify me of new posts via email. Use Trusted Hosts — to allow only certain hosts or networks that can access Firewall Management. Use Custom Ports for Management — Dont leave the management port on the default or 22, change it to some other ports like or Enable Management Access on Interfacebut limit to only one or a couple of interfaces — do not enable management to all the ports, e.
Avoid traffic shaping if you need maximum performance. Traffic shaping, by definition, slows down traffic. Any changes on the Fortigate are applied right-away and live.
Make sure to save a backup configurations before making any major changes. System and Performance Below are the guidelines for best practice to ensure system performance and maximum efficiency of your firewall. On Firewall Policies, put the most used firewall on top of the Policy list — Remember that the firewall reads the policy from top to bottom, so you can save a precious amount of time and computing resources if you will set the most commonly matched policies on top of the policies rather than at the end.
Inspect your log settings and make sure you only log the necessary traffic — you will save computing resources and as well as log storage. Writing of logs, especially if to an internal hard disk slows down the performance. Make sure to enable only required application inspections Avoid FQDN addresses on policies if possible, unless they are internal.
Security — Firewall Policies Arrange firewall policies in the policy list from more specific to more general. The firewall searches for a matching policy starting from the top of the policy list and working down. As discussed in Section B. Many application use non-standard ports that can possibly be block if you limit specific ports to get to the internet. Inbound traffic — Apply IPS to the policy.
Do not use wildcards in policy. Read more details here Be careful when disabling or deleting firewall settings. This ensures that if a VPN tunnel goes down, traffic is not mistakingly routed to the Internet unencrypted.
If both interfaces have the same distance, then both can pass traffic, higher priority but if one has a higher number, that interface will be inactive and not pass traffic until the failover.Join us now!
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Best Practices of IPS Using.
Essentials Only Full Version. New Member. It seems like we are spinning our wheels trying to chase down individual VPNs that our students are using to circumvent our security measures. How are you all handling the blocking of mobile device VPNs at a macro level? It doesn't seem feasible to chase down, block and test the hundreds of VPNs that are currently available. Thanks for your input. Expert Member. That should block most if not all the VPNs you can find. The remaining VPNs that are not covered by the signatures above are covered by the other signatures in our Proxy category.
FortiOS 6.2 Best Practices
We have our tools that monitor when these apps are updated and we update our signatures accordingly. We give special priority to certain very evasive VPNs like Ultrasurf, Psiphon, Hotspot Shield, Freegate, etc because they employ very complicated protocols to bypass firewalls. What's the best way of doing this? Latest Posts. Don't understand how to do remote install. Active Posts.Firewall Be careful when disabling or deleting firewall settings.
Arrange firewall policies in the policy list from more specific to more general.
The firewall searches for a matching policy starting from the top of the policy list and working down. For example, a very general policy matches all connection attempts. When you create exceptions to a general policy, you must add them to the policy list above the general policy. Avoid using the All selection for the source and destination addresses. Use addresses or address groups. If you remove all policies from the firewall, there are no policy matches and all connections are dropped.
If possible, avoid port ranges on services for security reasons.
The settings for a firewall policy should be as specific as possible. Do not use 0. Do not use Any as a service. Use subnets or specific IP addresses for source and destination addresses and use individual services or service groups. Use a bit subnet mask when creating a single host address for example, Use logging on a policy only when necessary and be aware of the performance impact.
For example, you may want to log all dropped connections but can choose to use this sparingly by sampling traffic data rather than have it continually storing log information you may not use. It is possible to use security policies based on 'any' interface. However, for better granularity and stricter security, explicit interfaces are recommended. Use the comment field to input management data, for example: who requested the rule, who authorized it, etc. Avoid FQDN addresses if possible, unless they are internal.
For non vlan interfaces, use zones even if you have only one single interface for members to allow: An explicit name of the interface to use in security policies 'internal' is more explicit than 'port10'. A split between the physical port and its function to allow port remapping for instance moving from a 1G interface to a 10G interface or to facilitate configuration translation, as performed during hardware upgrades.