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litespeed_wiki:config:enable_quic [2020/12/14 04:02]
Eric Leu [Test Outgoing] 		litespeed_wiki:config:enable_quic [2020/12/14 04:05] (current)
Eric Leu
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 ===== How to Test UDP Incoming and Outgoing Connections ===== ===== How to Test UDP Incoming and Outgoing Connections =====
 Although you have enabled UDP on 443 on your server, it may be blocked by the data center at the route/​switch/​firewall level. To verify this, you can run the following: Although you have enabled UDP on 443 on your server, it may be blocked by the data center at the route/​switch/​firewall level. To verify this, you can run the following:
 +
 +==== Verify with NC command ====
 ==== Test Incoming ==== ==== Test Incoming ====
 To test incoming UDP connections to your server, you can run the following command from somewhere else, such as your local VM, or your other test client machine, but not within your server to be tested: ​ To test incoming UDP connections to your server, you can run the following command from somewhere else, such as your local VM, or your other test client machine, but not within your server to be tested: ​
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   Ncat: Version 6.40 ( http://​nmap.org/​ncat )   Ncat: Version 6.40 ( http://​nmap.org/​ncat )
   Ncat: Connected to 74.125.24.104:​443.   Ncat: Connected to 74.125.24.104:​443.
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- 
  
 ==== Verify with TCPDUMP ==== ==== Verify with TCPDUMP ====
-Sometimes that "nc -vu" ​command is not enough to verify UDP 443 port unless it will return some information back+Sometimes that ''​nc -vu'' ​command is not enough to verify UDP 443 port unless it will return some information back
 You can verify it with tcpdump, e.g.  You can verify it with tcpdump, e.g. 
 Run tcpdump on the website'​s server. Run tcpdump on the website'​s server.
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  • Last modified: 2020/12/14 04:05
  • by Eric Leu