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What does it mean when an HTTP request returns status code 0?
...gs which could cause this, but based off of your description, some form of firewall seems the most likely culprit.
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OpenSuSE 15.1 防火墙端口开放 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
OpenSuSE 15.1 防火墙端口开放opensuse-firewall-configOpenSuSE 15 1添加防火墙规则（比如3306端口）：firewall-cmd --permanent --zone=public --add-port=3306 tcp规则生效：firewall-cmd --reloadOpenSuSE 15.1添加防火墙规则（比如3306端口）：
firewall-cmd --permanent ...
git:// protocol blocked by company, how can I get around that?
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If this is an issue with your firewall blocking the git: protocol port (9418), then you should make a more persistent change so you don't have to remember to issue commands suggested by other posts for every git repo.
The below solution also just works f...
How do I enable MSDTC on SQL Server?
...sdn.microsoft.com/en-us/library/dd327979.aspx
Note: Sometimes the network firewall on the Local Computer or the Server could interrupt your connection so make sure you create rules to "Allow Inbound" and "Allow Outbound" connection for C:\Windows\System32\msdtc.exe
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SSL certificate rejected trying to access GitHub over HTTPS behind firewall
I'm stuck behind a firewall so have to use HTTPS to access my GitHub repository. I'm using cygwin 1.7.7 on Windows XP.
30 A...
Opening port 80 EC2 Amazon web services [closed]
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Also, check your firewall (as nsof stated). RHEL has iptables started by default. Windows has windows FW. Turn them off and see if that was the problem. If it was, then edit the firewall to allow 80/443 and restart
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WebSockets vs. Server-Sent events/EventSource
...nd UTF-8, SSE is limited to UTF-8. (Thanks to Chado Nihi).
Some enterprise firewalls with packet inspection have trouble dealing with WebSockets (Sophos XG Firewall, WatchGuard, McAfee Web Gateway).
HTML5Rocks has some good information on SSE. From that page:
Server-Sent Events vs. WebSockets
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Connect Device to Mac localhost Server? [closed]
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I tried using the IP address with and without firewall and many other solutions suggested and this is the only one that worked. I am running a localhost site on port 3000 with express using node js.
– lostAtSeaJoshua
Apr 6 '17 at 17...
How can I get the current page's full URL on a Windows/IIS server?
...s over doubles. None, nadda, zip, zero. It's an old wive's tale from the PHP3 era. Please don't perform such trivial mangling to content.
– Charles
Dec 16 '12 at 20:44
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What ports does RabbitMQ use?
What ports does RabbitMQ Server use or need to have open on the firewall for a cluster of nodes?
4 Answers
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