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litespeed_wiki:config:enable_quic [2019/03/26 20:13] Jackson Zhang [cPanel] |
litespeed_wiki:config:enable_quic [2020/12/14 04:02] Eric Leu [Test Outgoing] |
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| ConfigServer Security & Firewall -> csf - ConfigServer Firewall -> Firewall Configuration -> IPv4 Port Settings -> UDP_IN and UDP_OUT should enable ''443''. | ConfigServer Security & Firewall -> csf - ConfigServer Firewall -> Firewall Configuration -> IPv4 Port Settings -> UDP_IN and UDP_OUT should enable ''443''. | ||
| - | { :litespeed_wiki:config:udp-443-csf-quic.png?400 |}} | + | {{ :litespeed_wiki:config:udp-443-csf-quic.png?400 |}} |
| Also make sure that ''UDPFLOOD'' is set to Off ''0''. | Also make sure that ''UDPFLOOD'' is set to Off ''0''. | ||
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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 ==== | ||
| + | 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. | ||
| + | Run tcpdump on the website's server. | ||
| + | |||
| + | tcpdump -vv udp port 443 -X | ||
| + | | ||
| + | Run nc command from any client server. | ||
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| + | nc -vu YOUR_DOMAIN 443 | ||
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| + | and you should see some output on server if there's any UDP port 443 traffic in and out. | ||