doc-exports/docs/eip/umn/faq_eip_0007.html
Qin Ying, Fan f906a2fa67 EIP UMN 20230106 version
Reviewed-by: Hajba, László Antal <laszlo-antal.hajba@t-systems.com>
Co-authored-by: Qin Ying, Fan <fanqinying@huawei.com>
Co-committed-by: Qin Ying, Fan <fanqinying@huawei.com>
2023-08-02 19:23:34 +00:00

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<a name="faq_eip_0007"></a><a name="faq_eip_0007"></a>
<h1 class="topictitle1">How Do I Access an ECS with an EIP Bound from the Internet?</h1>
<div id="body8662426"><p id="faq_eip_0007__en-us_topic_0118498825_p64049399151026">Each ECS is automatically added to a security group after being created to ensure its security. The security group denies access traffic from the Internet by default. To allow external access to ECSs in the security group, add an inbound rule to the security group.</p>
<p id="faq_eip_0007__en-us_topic_0118498825_p47805390201821">You can set <strong id="faq_eip_0007__en-us_topic_0118498825_b14133936185013">Protocol</strong> to <strong id="faq_eip_0007__en-us_topic_0118498825_b1313316361501">TCP</strong>, <strong id="faq_eip_0007__en-us_topic_0118498825_b10134103619505">UDP</strong>, <strong id="faq_eip_0007__en-us_topic_0118498825_b141341736175013">ICMP</strong>, <strong id="faq_eip_0007__en-us_topic_0118498825_b1048114524011">GRE</strong>, or <strong id="faq_eip_0007__en-us_topic_0118498825_b813523612505">All</strong> as required on the page for creating a security group rule.</p>
<ul id="faq_eip_0007__en-us_topic_0118498825_ul43510211165256"><li id="faq_eip_0007__en-us_topic_0118498825_li2363341317238">If your ECS needs to be accessible over the Internet and you know the IP address used to access the ECS, set <strong id="faq_eip_0007__en-us_topic_0118498825_b8471757105118">Source</strong> to the IP address range containing the IP address.</li><li id="faq_eip_0007__en-us_topic_0118498825_li32971591172233">If your ECS needs to be accessible over the Internet but you do not know the IP address used to access the ECS, retain the default setting 0.0.0.0/0 for <strong id="faq_eip_0007__en-us_topic_0118498825_b11789176534">Source</strong>, and then set allowed ports to improve network security.<p id="faq_eip_0007__en-us_topic_0118498825_p115721856111814">The default source <strong id="faq_eip_0007__en-us_topic_0118498825_b1118822135313">0.0.0.0/0</strong> indicates that all IP addresses can access ECSs in the security group.</p>
</li><li id="faq_eip_0007__en-us_topic_0118498825_li11206555173943">Allocate ECSs that have different Internet access requirements to different security groups.</li></ul>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="faq_eip.html">EIP Binding and Unbinding</a></div>
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