Windows更新后无法与本地网络中的UDP服务通信 [英] Can not communicate with UDP service in local network after windows update

问题描述

Hello world，
在我们的管理员安装Windows更新之后，我目前面临一个丑陋的问题.
我们在本地网络中的服务器上运行一项服务.
它在启动时将自身注册到数据库中，并写入其ip和用于UDP通信的动态分配的端口号.
我们网络中的客户端在启动时读取值，并将其IP和动态分配的端口通过UDP发送给服务器，以便服务器可以注册它们，然后能够通过UDP将信息发送给客户端，以用于各种目的. >
一切正常，直到管理员在我的假期中更新了Win 7的安装为止.只是行不通了.
事实是，它以前曾经可以使用，但现在仍然可以在所有其他使用XP的计算机上使用.

我对这类主题的教育程度不高，因此昨天我在Google上搜索了很多内容，以便了解该问题，因此可以对其进行修复.关于此问题有一些帖子，但似乎大多数帖子都能够解决Windows防火墙中此打开端口的问题.
似乎最近一次更新中的一个发生了变化，但这对我来说没有任何意义.

我们的局域网中所有防火墙均已禁用.
我尝试使用Wireshark来确定是否发送了任何程序包，但是即使调试器在控制台中显示了尝试，它似乎也没有发送任何内容. 我们的网络同时启用了IPv4和IPv6.
我可以ping服务器IP，但不能使用ip和port对其进行telnet(到目前为止，我对telnet并不了解，因此此信息可能具有任何价值).

因此，现在我陷入困境，管理员将在接下来的几周内休假(情况总是一样，不是吗?).


更新:
我们刚刚发现只有Win7 64位计算机受到影响... Win7 32位似乎可以正常工作.
那是错误的，不幸的是，我们的管理员在所有Win 7 64位计算机上安装了虚拟网络适配器(Oracle Virtual Box)及其更新……因此，立即发现问题并不明显...
禁用虚拟网络适配器完成了这项工作，一切再次开始正常工作.


最好的问候，并度过美好的一天
Andy

Hello world,
I am currently facing an ugly problem after our admin installed windows updates.
We have a service running on a server in our local network.
It registers itself on startup in a database, writing its ip and the number of a dynamically assigned port for UDP communication.
Clients in our network read the values on startup and send their IP and their dynamically assigned port via UDP to the server, so that the server can register them and was then able to send information via UDP to the clients for various purposes.

Everything worked fine until the admin updated my Win 7 installation during my vacation. It just doesn''t work anymore.
Fact is that it worked before, and it still works for all other machines that are using XP.

I am not well educated on this kind of topic so I googled a lot yesterday in order to understand the problem so I can fix it. There were some posts regarding this issue, but it seems that most of them were able to work around this opening ports in their windows firewall.
It also seems that there was a change in one of the last updates, but it just doesn''t make sense to me.

All firewalls are disabled in our local network.
I tried to use Wireshark to find out if any packages are sent, but it doesn''t seem to send anything, even if the debugger show the tries in the console....
Our network uses both IPv4 and IPv6 enabled.
I can ping the servers IP but not telnet it using ip and port (I have no deep knowledge on telnet so far, so this information might be of any value).

So now I am stuck and the admin is away for the next weeks (its always the same, isn''t it?) for a vacation.


UPDATE:
we just figured out that only Win7 64 bit machines are affected... Win7 32 bit seems to work.
That was wrong, unfortunately our admin installed a virtual network adapter (Oracle Virtual Box) on all the Win 7 64bit machines together with the updates... So it wasn''t obvious to spot the problem right away...
Disabling the virtual network adapter did the job and everything started to work again.


best regards and have a nice day
Andy

推荐答案

不幸的是，我们的管理员在所有Win 7 64位计算机上安装了虚拟网络适配器(Oracle Virtual Box)以及更新...所以就没有了.很明显可以立即发现问题...

禁用虚拟网络适配器可以完成这项工作，并且一切再次开始正常工作.

Unfortunately our admin installed a virtual network adapter (Oracle Virtual Box) on all the Win 7 64bit machines together with the updates... So it wasn''t obvious to spot the problem right away...

Disabling the virtual network adapter did the job and everything started to work again.

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