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Testing: Difference between revisions
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=== troubleshooting steps === | === troubleshooting steps === | ||
find the problem occurred: (1)local service (2)server to LAN (3)server to WAN | |||
WAN o ------- o LAN ------- <span style="color:red">o localhost</span> | |||
* testing on localhost: | * testing on localhost: | ||
** Is service alive? | ** Is service alive? | ||
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*** {{Linux}} (1) {{kbd | key = iptables -L --line-numbers}} to list all rules<ref>[http://wiki.centos.org/HowTos/Network/IPTables HowTos/Network/IPTables - CentOS Wiki]</ref> (2) rule with lower line-number will override the rule with higherer line-number<ref>[https://fedoraproject.org/wiki/How_to_edit_iptables_rules?rd=User_talk:Rforlot How to edit iptables rules - FedoraProject]</ref> | *** {{Linux}} (1) {{kbd | key = iptables -L --line-numbers}} to list all rules<ref>[http://wiki.centos.org/HowTos/Network/IPTables HowTos/Network/IPTables - CentOS Wiki]</ref> (2) rule with lower line-number will override the rule with higherer line-number<ref>[https://fedoraproject.org/wiki/How_to_edit_iptables_rules?rd=User_talk:Rforlot How to edit iptables rules - FedoraProject]</ref> | ||
** protected by antivirus? | ** protected by antivirus? | ||
WAN o ------- <span style="color:red">o LAN ------- o localhost</span> | |||
* testing on LAN: Is service alive? The servers between LAN or with the same ip class (ex: 1.2.3.*) often without firewall limit. | * testing on LAN: Is service alive? The servers between LAN or with the same ip class (ex: 1.2.3.*) often without firewall limit. | ||
** double [[Testing#check_the_server.2Fservice_logs | check the server/service logs]] | ** double [[Testing#check_the_server.2Fservice_logs | check the server/service logs]] | ||
* other issue: | <span style="color:red">WAN o ------- o LAN ------- o localhost</span> | ||
We met the trouble on WAN | |||
* testing on WAN: Down for everyone or just me? Check by [[Web_Ping#同時從世界各處測試網站連線 | Web Ping]] | |||
* is gateway alive? | |||
* is DND alive? | |||
other issue: | |||
* bandwidth cost too much by certain users, | |||
* exceed the request limit of firewall | |||
* the external connection of updated Windows was down until reboot {{Win}} | |||
* Amazon EC2 security group | |||
== user client node == | == user client node == | ||