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I upgraded my watchguard firewal x550e Core series from 11.0.1 to 11.3.2 and Watchguard system manager to 11.6.1. 
 
Everything was working just fine including the VPN. We are using Watchguard Mobile VPN Client for IPSec. 
 
Then I upgraded the fireware to 11.3.5. Everything except the VPN stopped working. 
 
The mobile vpn client was able to establish the connection to the gateway. However, when attempted to use remote desktop connection to connect to a resource inside the network, it was not able to connect. 
 
Looking at the traffic monitor, I noticed the following entry that it is being denied on our backup internet connection. 
 
2012-09-21 17:42:01 Deny 10.0.0.120 10.0.0.1 dns/udp 50153 53 1-&lt;Backup ISP&gt; 2-Internal Denied 61 127 (Unhandled MUVPN Packet.in-00) &nbsp;proc_id=&quot;firewall&quot; rc=&quot;101&quot; src_user=&quot;&lt;USERNAME&gt;@Active Directory&quot; &amp;#9;Traffic 
 
We do not force all internet connection through the firewall when the client is connected. 
 
As of now, I restored back to 11.3.2 and everything is working. I noticed a similar issue experience by another user here but he mentioned about Base Search DN not being set correct. I didn't get that quite correct. 
 
Any help is much appreciated. 
 
Regards, 
Raj
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I upgraded my watchguard firewal x550e Core series from 11.0.1 to 11.3.2 and Watchguard system manager to 11.6.1.

Everything was working just fine including the VPN. We are using Watchguard Mobile VPN Client for IPSec. 

Then I upgraded the fireware to 11.3.5. Everything except the VPN stopped working.

The mobile vpn client was able to establish the connection to the gateway. However, when attempted to use remote desktop connection to connect to a resource inside the network, it was not able to connect. 

Looking at the traffic monitor, I noticed the following entry that it is being denied on our backup internet connection. 

2012-09-21 17:42:01 Deny 10.0.0.120 10.0.0.1 dns/udp 50153 53 1-<Backup ISP> 2-Internal Denied 61 127 (Unhandled MUVPN Packet.in-00) proc_id="firewall" rc="101" src_user="<USERNAME>@Active Directory" &#9;Traffic

We do not force all internet connection through the firewall when the client is connected.

As of now, I restored back to 11.3.2 and everything is working. I noticed a similar issue experience by another user here but he mentioned about Base Search DN not being set correct. I didn't get that quite correct. 

Any help is much appreciated.

Regards,
Raj

Unhandled MUVPN Packet.in-00

Network Management involves issues that are independent of specific hardware or software, including email policies, upgrade planning, backup scheduling and working with managed service providers for Desktop-As-A-Service (DaaS), Software-As-A-Service (SaaS) and the like through the use of tools, coupled with manufacturer standards, best practice guidelines, policies and procedures plus all other relevant documentation. Network management also includes monitoring, alerting and reporting, management reporting, planning for device or service updates, the backup of configurations, the setting of key performance indicators and measures (KPIs/KPMs), associated service level agreements and problem records as part of the IT Service Management (ITSM) framework.

Network Management

Network design and methodology, also known as network architecture, is the design of a communication network. It is a framework for the specification of a network's physical components and their functional organization and configuration, its operational principles and procedures, as well as data formats used in its operation. In telecommunication, the specification of a network architecture may also include a detailed description of products and services delivered via a communications network, as well as detailed rate and billing structures under which services are compensated.

Network Architecture

Network Operations includes asset management, help-desk supervision, security and user policies, infrastructure administration and anything else that affects the operation of your network. Discussions will include those of best practices in platforms, configurations, performance, security and accounting.

Network Operations

Networking software modules are interfaced with a framework implemented on the machine's operating system that implements the networking functionality of the operating system. The best known frameworks are the TCP/IP model and the OSI model. Systems typically do not use a single protocol to handle a transmission. Instead they use a set of cooperating protocols, sometimes called a protocol family or protocol suite.[9] Some of the best known protocol suites include: IPX/SPX, X.25, AX.25, AppleTalk and TCP/IP. Other protocols indirectly related to networking include the hypertext transfer protocol (HTTP) and its related technologies, Dynamic Host Configuration Protocol (DHCP), Domain Name Server (DNS) and other Internet protocols.

Networking Protocols

Networking hardware includes the physical devices facilitating the use of a computer network. Typically, networking hardware includes gateways, routers, network bridges, modems, wireless access points, networking cables, line drivers, switches, hubs, and repeaters. But it also includes hybrid network devices such as multilayer switches, protocol converters, bridge routers, proxy servers, firewalls, network address translators, multiplexers, network interface controllers, wireless network interface controllers, ISDN terminal adapters and other related hardware.