Detection of Abnormal Network ActivitiesAbnormal network activities (computer virus, worms, spyware, traffic denied by establishment policy, etc.) can be detected using local and remote, or commercial sensors. Content inspection is also possible with Suricata, and can be combined with malware hash databases such as. Beyond simple detection, PacketFence layers its own alerting and suppression mechanism on each alert type. A set of configurable actions for each violation is available to administrators. The solution is built around the concept of network isolation through VLAN assignment. For more details on how this work see the page. Because of its long experience and several deployments, the VLAN management of PacketFence grew to be very flexible over the years.

• Cisco Ise Dynamic Vlan Assignment

Your VLAN topology can be kept as it is and only two new VLAN will need to be added throughout your network: registration VLAN and isolation VLAN. Moreover, PacketFence can also make use of roles support from many equipment vendors.VLAN and roles can be assigned using the various means:. Per switch (default for VLAN). Per client category (default for roles). Per client. Using any arbitrary decision (if you use our perl extension points)Also, the per-switch method can be combined with the others.

For example, with a default PacketFence setup, a VLAN or a role can be assigned to your printers and your PCs (if categorized properly) based on what equipment they are connected to. This implies that you can easily have per-building per-device type VLANs. Nowadays, most organizations deal with a lot of consultants from various companies on-site that require Internet access for their work. In most cases, an access to the corporate network is given with little to no audit of the individual or device. Also, it is rarely required that they have access to the internal corporate infrastructure, it is done that way to avoid administrative burden (per-port VLAN management).PacketFence supports a special guest VLAN or role out of the box. If you use a guest VLAN, you configure your network so that the guest VLAN only goes out to the Internet and the registration VLAN and the captive portal are the components used to explain to the guest how to register for access and how his access works. This is usually branded by the organization offering the network access.

NPS is one of most widely used Radius servers out there and no network is secure without the use of Radius. You have a chance to learn how to Configure, Manage and Troubleshoot Radius on NPS, right here! All you need is prior understanding of what a Windows server is and a passion to learn.

Several means of registering guests are possible:. Manual registration of the guests. Password of the day. Self-registration (with or without credentials). Guest access sponsoring (employee vouching for a guest). Guest access activated by email confirmation. Guest access activated by mobile phone confirmation (using SMS).

Guest access activated through a Facebook/Google/GitHub authenticationPacketFence does also support guest access bulk creations and imports. PacketFence also integrates with online billing solution such as, and more.

Using this integration, you can handle online payments, required to get proper network access. PacketFence provides device management and provisioning capabilities through its integration with complementary solutions.These solutions which normally include an agent, allow compliance checks, settings being pushed and more on endpoints connected to your network. PacketFence can make sure the agents (or clients) are installed during the registration process, and afterwards for every new connection.PacketFence supports the following solutions:.Finally, PacketFence provides its own configuration agents for Android, Apple and Windows-based endpoints.Please see our to integrate PacketFence with these solutions. A Floating Network Device is a Switch or Access Point (AP) that can be moved around your network and that is plugged into access ports.

Once configured properly, PacketFence will recognize your Floating Network Devices and will configure the access ports appropriately usually allowing multiple VLANs and more MAC addresses. At this point, the Floating Network Device can also perform network access through PacketFence or not. Once the device is disconnected PacketFence will then re-configure back to its original configuration. PacketFence integrates very well with Microsoft Active Directory. A PacketFence server can even be joined to multiple Active Directory domains - without needing to establish a trust between them.Moreover, PacketFence fully supports Windows Management Instrumentation (WMI). PacketFence can automatically register endpoints based on WMI scan results. It can also perform WMI scans during the registration process, at scheduled intervals or upon every connections to the wired or WiFi network.

Complex but effective WMI scans can be created directly from the PacketFence administrative interface.Finally, PacketFence exposes Web services that can be used by Windows PowerShell scripts. PacketFence includes scripts to automatically unregister devices belonging to users being removed in Active Directory or for whom the account was locked. Because of the intrusive nature of network access control, PacketFence comes with finely-grained controls when it comes to deployment. As described elsewhere, you can automatically pre-register nodes but you can also control on a per-switch and per-port level wether or not should PacketFence perform its duties. This enables you to deploy at the speed you want, per-switch, per-floor, per-location, etc.The same level of control is also available on the isolation features. At first, you can only log on violation events.

Then, as you feel more familiar with who would be isolated and validated against false-positive, you can enable VLAN isolation.Together, these two features makes the deployment of a PacketFence as easy as it could be. PacketFence has a couple of extension points where you can override PacketFence's default behavior with a little bit of Perl code. The API has been designed to be easy to understand with only a couple of high-level entry points. Several examples are already there in the source code but commented. Also, when upgrading, PacketFence doesn't replace the files in the extensions points, this way you keep your modified behavior on upgrades.The captive portal templates are also easily customizable with HTML and CSS knowledge. They are built using Perl's. VLAN assignment is currently performed using several different techniques.

These techniques are compatible one to another but not on the same switch port. This means that you can use the more secure and modern techniques for your latest switches and another technique on the old switches that doesn't support latest techniques. As it's name implies, VLAN assignment means that PacketFence is the server that assigns the VLAN to a device. This VLAN can be one of your VLANs or it can be a special VLAN where PacketFence acts as a DHCP/DNS/HTTP server where it runs the captive portal.Compared to PacketFence's legacy modes of operation (ARP and DHCP) VLAN assignment effectively isolate your hosts at the OSI Layer2 meaning that it is the trickiest method to bypass and is the one which adapts best to your environment since it glues into your current VLAN assignment methodology. Wired: 802.1X + MAC Authentication Bypass (MAB)802.1X provides port-based authentication, which involves communications between a supplicant, authenticator (known as NAS), and authentication server (known as AAA). The supplicant is often software on a client device, such as a laptop, the authenticator is a wired Ethernet switch or wireless access point, and the authentication server is generally a RADIUS database.The supplicant (i.e., client device) is not allowed access through the authenticator to the network until the supplicant identity is authorized. With 802.1X port-based authentication, the supplicant provides credentials, such as user name / password or digital certificate, to the authenticator, and the authenticator forwards the credentials to the authentication server for verification.

If the credentials are valid (in the authentication server database), the supplicant (client device) is allowed to access the network. The protocol for authentication is called Extensible Authentication Protocol (EAP) which have many variants. Both supplicant and authentication servers need to speak the same EAP protocol.

Among popular ones are EAP-MD5, PEAP-MsCHAPv2 (used by Windows for authentication against Active Directory) or EAP-TLS.In this context, PacketFence runs the authentication server (a FreeRADIUS instance) and will return the appropriate VLAN to the switch. A module that integrates in FreeRADIUS does a remote call to the PacketFence server to obtain that information. More and more devices have 802.1X supplicant which makes this approach more and more popular.MAC authentication bypass (MAB) is a new mechanism introduced by some switch vendor to handle the cases where a 802.1X supplicant does not exist. After a timeout period, the switch will stop trying to perform 802.1X and will fallback to MAB. It has the advantage of using the same approach as 802.1X except that the MAC address is sent instead of the user name and that there is no end-to-end EAP conversation (no strong authentication).

Using MAB, devices like network printer or non-802.1X capable IP Telephones (IPT) can still gain access to the network and the right VLAN.Right now this integration is not pleasant as it could be involving manual modification of our FreeRADIUS module but our latest unreleased code already handles 802.1X + MAB built into the PacketFence main configuration. If you are adventurous feel free to try it out. Using SNMP TrapsAll switch ports (on which VLAN isolation should be done) must be configured to send SNMP traps to the PacketFence host. On PacketFence, we use snmptrapd as the SNMP trap receiver.

As it receives traps, it reformats and writes them into a flat file: /usr/local/pf/logs/snmptrapd.log. The multithreaded pfsetvlan daemon reads these traps from the flat file and responds to them by setting the switch port to the correct VLAN. Depending on your switches capabilities, pfsetvlan will act on different types of SNMP traps. You need to create a registration VLAN (with a DHCP server, but no routing to other VLANs) in which PacketFence will put unregistered devices. If you want to isolate computers which have open violations in a separate VLAN, an isolation VLAN needs also to be created.

Link Change TrapsThis is the most basic setup and it needs a third VLAN: the MAC detection VLAN. There should be nothing in this VLAN (no DHCP server) and it should not be routed anywhere; it is just an empty VLAN.When a host connects to a switch port, the switch sends a linkUp trap to PacketFence. Since it takes some time before the switch learns the MAC address of the newly connected device, PacketFence immediately puts the port in the MAC detection VLAN in which the device will send DHCP requests (with no answer) in order for the switch to learn its MAC address. Then pfsetvlan will send periodical SNMP queries to the switch until the switch learns the MAC of the device. When the MAC address is known, pfsetvlan checks its status (existing?

Any violations?) in the database and puts the port in the appropriate VLAN.When a device is unplugged, the switch sends a 'linkDown' trap to PacketFence which puts the port into the MAC detection VLAN.When a computer boots, the initialization of the NIC generates several link status changes. And every time the switch sends a linkUp and a linkDown trap to PacketFence. Since PacketFence has to act on each of these traps, this generates unfortunately some unnecessary load on pfsetvlan. In order to optimize the trap treatment, PacketFence stops every thread for a 'linkUp trap' when it receives a 'linkDown' trap on the same port. But using only linkUp/linkDown traps is not the most scalable option.

For example in case of power failure, if hundreds of computers boot at the same time, PacketFence would receive a lot of traps almost instantly and this could result in network connection latency. MAC notification trapsIf your switches support MAC notification traps (MAC learnt, MAC removed), we suggest that you activate them in addition to the linkUp/linkDown traps.

This way, pfsetvlan does not need, after a linkUp trap, to query the switch continuously until the MAC has finally been learned. When it receives a linkUp trap for a port on which MAC notification traps are also enabled, it only needs to pot the port in the MAC detection VLAN and can than free the thread. When the switch learns the MAC address of the device it sends a MAC learnt trap (containing the MAC address) to PacketFence. Port Security TrapsIn its most basic form, the Port Security feature remembers the MAC address connected to the switch port and allows only that MAC address to communicate on that port. If any other MAC address tries to communicate through the port, port security will not allow it and send a port-security trap.If your switches support this feature, we strongly recommend to use it rather than linkUp/linkDown and/or MAC notifications.

Because as long as a MAC address is authorized on a port and is the only one connected, the switch will send no trap whether the device reboots, plugs in or unplugs. This drastically reduces the SNMP interactions between the switches and PacketFence.When you enable port security traps you should not enable linkUp/linkDown nor MAC notification traps. Wireless 802.1X works pretty much like wired 802.1X and MAC authentication is like MAB. Where things change is that the 802.1X is used to setup the security keys for encrypted communication (WPA2-Enterprise) while MAC authentication is only used to authorize allow or disallow a MAC address on the wireless network.PacketFence integrates very well with wireless networks.

As for its wired counterpart, the switch, a wireless Access Points (AP) or wireless controller needs to implement some specific features in order for the integration to work perfectly. In particular, the access point or controller needs to support:. several SSIDs with several VLANs (at least 2) inside each SSID. authentication against a RADIUS server.

dynamic VLAN assignment (through RADIUS attributes). the deauthentication of an associated station. a mean to de-associate or de-authenticate a client through CLI (telnet or SSH), SNMP, RADIUS Dyn-Auth.

or WebServicesMost of these features work out of the box on enterprise grade access points or wireless controllers. Where the situation starts to vary is for de-authentication support.A CLI-based (SSH or telnet) one is an error prone interface and requires preparation for the SSH access or is insecure for telnet. It is generally not recommended. SNMP de-authentication works well when available. However vendor support is not consistent and the OIDs to use are not standard. RADIUS Dynamic Authorization (RFC3576) also known as RADIUS Change of Authorization (CoA) or RADIUS Disconnect Messages is supported by PacketFence starting with version 3.1. When supported it is the preferred technique to perform de-authentication. It is standard and requires less configuration.Finally, we can then configure two SSIDs on the AP, the first one reserved for visitors and unregistered clients. In this SSID, communications will not be encrypted and users will connect either to the registration VLAN or the guest VLAN (depending on their registration status).

Users can register and get assistance to configure their access to the secure SSID using the captive portal which requires authentication and runs over HTTPS. The second SSID will allow encrypted communications for registered users. Supported network devicesThe following tables detail the wired and wireless equipment supported by PacketFence. This list is the most up-to-date one. Note that generally all wired switches supporting MAC authentication and/or 802.1X with RADIUS can be supported by PacketFence.Bugs and limitations of the various modules can be found in the.

I will review the order, print and ship within one business day.Important!. When you're happy with the results click the Paypal Button and finish the checkout. F4u corsair for sale.

Hi,I'm going to implement RADIUS authentication here at my office.The radius server is Windows NPS, linked to AD.My problem is When people turn ON their computers, the switch can't assign a VLAN for the port where the computer is connected. It only receive information for that after de user login into their account, But how can the user login into AD if there is no network connection??If no Vlan is assigned to that computer how can it communicate with AD in order to authenticate the user?If someone can help. Yes, i've wrestled with these considerations before - i would encourage you to consider provisioning vlans based on machine rather than user - after all, it is the machine which is utilizing the vlan, not the user.

This is a conceptual point but services to users should be provisioned at a higher level than layer 2 - moving frames in a broadcast domain is up to to the machine, not the user. I'm sure you have good reason to want to segregate user services per vlan - but consider that student behavior on a machine may introduce malware that is then transported into the vlan used by teachers when the next teacher logs in.machines you build and trust, i'd put it on the vlan that has access to things that are important and need to be protected. Machines (such as personal devices) for which you have no control, i'd segregate into a vlan that only give access to the internet and whatever limited internal services that are required.

Vlans are for security and control, not so much for provisioning services. It's just a broadcast domain mapped onto a layer 3 IP schema which is intended for transport of layer 4 and up.all that said, most switch configs allow for re-auth timers - after a predetermined timed, authentication times-out and has to be performed again. You don't need to physically admin-down the port just to re-auth. You may be able to use re-auth timers to accomplish what you're trying to do. Yes, you understood the problem. The only way i see it's exactly how you described, changing to machine authentication, but the problem is that diferent (VLAN TYPES USERS) login on common PC's.Let's see, on a school you have students and teachers, they go to the library and use the same computers. In order to place them in different Vlans I can't just authenticate by machine otherwise they would need to use the same VLAN.The only solution I see to this problem is to get a way of place the computer on a network that can talk to Active Directory and the when the user Login is done, the computer is placed on another Vlan.And i don't think this is possible because when a switch port is authenticated it remains on that Vlan until the port state goes down and an authentication is required again.

Yes, i've wrestled with these considerations before - i would encourage you to consider provisioning vlans based on machine rather than user - after all, it is the machine which is utilizing the vlan, not the user. This is a conceptual point but services to users should be provisioned at a higher level than layer 2 - moving frames in a broadcast domain is up to to the machine, not the user. I'm sure you have good reason to want to segregate user services per vlan - but consider that student behavior on a machine may introduce malware that is then transported into the vlan used by teachers when the next teacher logs in.machines you build and trust, i'd put it on the vlan that has access to things that are important and need to be protected. Machines (such as personal devices) for which you have no control, i'd segregate into a vlan that only give access to the internet and whatever limited internal services that are required. Vlans are for security and control, not so much for provisioning services. It's just a broadcast domain mapped onto a layer 3 IP schema which is intended for transport of layer 4 and up.all that said, most switch configs allow for re-auth timers - after a predetermined timed, authentication times-out and has to be performed again. You don't need to physically admin-down the port just to re-auth.

You may be able to use re-auth timers to accomplish what you're trying to do. Think of it this way - vlans are like railroad tracks.

You might have one set of rails for cargo - another set of rails for passenger trains. But you're not going to have separate sets of rails based on liquid cargo vs.

Cisco Ise Dynamic Vlan Assignment

Solid cargo or first-class passengers vs economy-coach passengers. Definitely different types of railroad cars for liquid vs cargo and first-class vs economy coach - but not separate rails. Vlans are really low level - layer 2 just above the 1s and 0s on the wire. Everything rides on the rails - user services should be provisioned at higher layers in your system. AD is a high-level user service - it presumes the low-level layer 2 'rails' are already established.