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Cisco Anyconnect Pfsense



Introduction¶

  1. Cisco Anyconnect Windows 10 Download
  2. Cisco Anyconnect Pfsense App
  3. Cisco Anyconnect Secure Mobility Client Free

PfSense as a Cisco AnyConnect VPN Client using OpenConnect pfSense, as of 2016-03-01, does not support OpenConnect out of the box. However, it’s in the FreeBSD repository, and relatively easy to add: # pkg # pkg update -f # pkg install openconnect # rehash.

OpenConnect is a SSL VPN client initially created to support Cisco’s AnyConnect SSL VPN.It has since been ported to support the Juniper SSL VPN which is now known as Pulse Connect Secure.Palo Altos Global Protect will also be supported in future and of course the own OpenConnect Server.

I run pfSense at home and Cisco ASA at work. I have a loaded, Sec Plus unlimited ASA 5505 at home, but never use it. Compared to pfSense.for home use., there is nothing I find lacking in pfSense, with the exception of Cisco's AnyConnect client. By default, the Cisco AnyConnect client will timeout after 12 seconds on Windows and after 30 seconds on Mac OS X. Your users may require more time to authenticate, so the following steps will guide you in creating a profile to override the default timeout.

Step 1 - Installation¶

Go to System ‣ Firmware ‣ Plugins and search for os-openconnect.Install the plugin as usual, refresh and page and the you’ll find the client viaVPN ‣ OpenConnect.

Step 2 - Setup¶

The setup of the client is very simple. Just tick Enable and fill out VPN Server,Username and Password. Be sure that the FQDN matches the name in the certificateor you will receive an error. Also wildcard certificates can produce errors.

Once enabled, a new interface will be available for specifying firewall rules;Firewall ‣ Rules ‣ OpenConnect will appear.

Step 3 - Troubleshoot problems¶

To troubleshoot connection problems it’s best to login via CLI and start OpenConnect manually:

# /usr/local/etc/rc.d/opnsense-openconnect start

Look out for errors like

Totrustthisserverinfuture,perhapsaddthistoyourcommandline:--servercertsha256:9f97a3395d18093a14f0d8e768dabee231af34d9ba35432dfe838d58dd633333

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Now the field Certificate Hash comes into play, so please insert the string above withoutthe hash size and set this one in field Certificate Hash Type.

This page describes how to configure IPsec to connect pfSense® routerand a Cisco IOS router with IPsec capabilities.

Example Network¶

This diagram shows the specifics of the network where this VPN is beingconfigured. For the sake of this documentation, both hosts were onprivate subnets, but functionally equivalent to two hosts across theInternet.

Configuring the router¶

First, configure the phase 1 settings with a crypto isakmp policy. Thefollowing sets it for 3DES, SHA and group 2 to match the pfSenseconfiguration shown later.

Next, configure the pre-shared key. The key in this example is ABCDEFG,but be sure to use something random and secure for any productiondeployments. 10.0.66.22 is the WAN IP of the pfSense system beingused.

Next configure the transform set for phase 2. This uses ESP, 3DESand SHA. The transform set is named 3DES-SHA, which is how it willbe referred to later.

Now configure an access list that will match the local and remotesubnets on the pfSense router. This is configured as access-list 100,which will be used in the next step. Remember this uses wildcard masks,so a /24 network (255.255.255.0 mask) is represented as 0.0.0.255.

Now configure the crypto map for this VPN:

Lastly, under the interface configuration for the interface where theVPN will terminate (the one with the public IP), assign the crypto map:

The configuration is then finished on the Cisco side.

Configuring pfSense Software¶

This screenshot shows the pfSense configuration matching the above Ciscoconfiguration.

In the above example, the pfSense IPsec tunnel should be set as follows:

Phase 1:

Pfsense

Remote Gateway: 10.0.64.175Authentication Method: Pre-Shared KeyNegotiation Mode: MainMy Identifier: My IP AddressPre-Shared Key: ABCDEFGEncryption Algorithm: 3DESHash Algorithm: SHA1DH Key Group: 2Lifetime: 28800NAT Traversal: Disable

It may also be advisable to set Proposal Checking to Obey to avoidsome issues with building a tunnel when the other side initiates. Ark steam key.

Phase 2:

Linux curl. URL syntax and their use in curl Specifications. The official 'URL syntax' is primarily defined in these two different specifications: RFC 3986 (although URL is called 'URI' in there) The WHATWG URL Specification; RFC 3986 is the earlier one, and curl has always tried to adhere to.

Mode: Tunnel IPv4Local Network: LAN SubnetRemote Network: 172.26.5.0/24Protocol: ESPEncryption Algorithm: 3DES (others may also be checked, but besure to leave 3DES checked)Hash Algorithm: SHA1PFS Key Group: 2Lifetime: 3600

Testing the connection¶

To test the connection, from the pfSense router, do the following:

  • Navigate to Diagnostics > Ping

  • Enter an IP address on the remote network

  • Choose the LAN interface

  • Click Ping.

Cisco Anyconnect Pfsense

The initial negotiation may make all three of the first pings timeout,so try it a second time as well. If configured as depicted above, oncethe tunnel connects, the following will be seen:

Troubleshooting¶

Cisco Anyconnect Pfsense App

If the connection doesn’t come up, there is a mismatch somewhere in theconfiguration. Depending on specifics, more useful information may beobtained from pfSense router or the Cisco router. Checking logs on bothends is recommended. For pfSense software, browse toStatus > System Logs on the IPsec tab. For Cisco, rundebug crypto isakmp and term mon (if not connected via serialconsole) to make the debug messages appear in a session. The outputcan be verbose, but will usually tell specifically what was mismatched.

“No NAT” List on Cisco IOS¶

It may also be necessary to tell Cisco IOS not to NAT the traffic thatis destined for the IPsec tunnel. There are several ways to accomplishthis, depending on how the router has NAT configured. If the followingexample does not help, there are several examples that turn up in aGoogle search for “cisco ios nonat ipsec”:

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This will direct the router to prevent NAT if the traffic is going fromthe subnet behind the Cisco router to the subnet behind the pfSenserouter, but allow it in all other cases.