Debian Handbook/10_network-infrastructure — Chinese (Simplified) @ Hosted Weblate: <primary>network</primary><secondary>address translation</secondary><seealso>NAT</seealso>

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	<primary>private IP address</primary>	<primary>私有 IP 地址</primary>
	RFC 1918 defines three ranges of IPv4 addresses not meant to be routed on the Internet but only used in local networks. The first one, <literal>10.0.0.0/8</literal> (see sidebar <xref linkend="sidebar.networking-basics" />), is a class-A range (with 2<superscript>24</superscript> IP addresses). The second one, <literal>172.16.0.0/12</literal>, gathers 16 class-B ranges (<literal>172.16.0.0/16</literal> to <literal>172.31.0.0/16</literal>), each containing 2<superscript>16</superscript> IP addresses. Finally, <literal>192.168.0.0/16</literal> is a class-B range (grouping 256 class-C ranges, <literal>192.168.0.0/24</literal> to <literal>192.168.255.0/24</literal>, with 256 IP addresses each). <ulink type="block" url="http://www.faqs.org/rfcs/rfc1918.html" />	RFC 1918 把三组 IPv4 地址设为局域网路专用，不能路由至互联网。第一组是，<literal>10.0.0.0/8</literal> (见专栏 <xref linkend="sidebar.networking-basics" />)，是一个A级范围 (是 2<superscript>24</superscript> IP 地址)。第二组是，<literal>172.16.0.0/12</literal>，16个B级范围 (<literal>172.16.0.0/16</literal> 至 <literal>172.31.0.0/16</literal>)，每个有 2<superscript>16</superscript> IP 地址。最后，<literal>192.168.0.0/16</literal> 是一个B级范围 (包括 256 个C级范围，<literal>192.168.0.0/24</literal> 至 <literal>192.168.255.0/24</literal>，各有 256 个 IP 地址)。<ulink type="block" url="http://www.faqs.org/rfcs/rfc1918.html" />
	The gateway can also perform two kinds of <emphasis>network address translation</emphasis> (or NAT for short). The first kind, <emphasis>Destination NAT</emphasis> (DNAT) is a technique to alter the destination IP address (and/or the TCP or UDP port) for a (generally) incoming connection. The connection tracking mechanism also alters the following packets in the same connection to ensure continuity in the communication. The second kind of NAT is <emphasis>Source NAT</emphasis> (SNAT), of which <emphasis>masquerading</emphasis> is a particular case; SNAT alters the source IP address (and/or the TCP or UDP port) of a (generally) outgoing connection. As for DNAT, all the packets in the connection are appropriately handled by the connection tracking mechanism. Note that NAT is only relevant for IPv4 and its limited address space; in IPv6, the wide availability of addresses greatly reduces the usefulness of NAT by allowing all “internal” addresses to be directly routable on the Internet (this does not imply that internal machines are accessible, since intermediary firewalls can filter traffic).	网关有两种 <emphasis>网络地址转换</emphasis> (英文缩写 NAT) 的功能。第一种是 <emphasis>目的 NAT</emphasis> (DNAT)，改变封包目的 IP 地址 (与 TCP 或 UDP 端口)。链接追踪机制同时改变后续封包的链接。第二种 NAT 是 <emphasis>来源 NAT</emphasis> (SNAT)，其中的 <emphasis>伪装</emphasis> 是特例之一；SNAT 改变出去链接的来源 IP 地址 (与 TCP 或 UDP 端口)。如同 DNAT，所有的封包由链接追踪机制处理。NAT 只用于 IPv4 及其限制的地址空间；在 IPv6 内，其宽广的地址技术允许直接在互联网路由 (并不表示可以近用内部机器，因为防火墙可以过滤流量) 减少 NAT 的用途。
	<primary>NAT</primary><seealso>Network Address Translation</seealso>	<primary>NAT</primary><seealso>网络地址转换</seealso>
	<primary>Network Address Translation</primary><seealso>NAT</seealso>	<primary>网络地址转换</primary><seealso>NAT</seealso>
	<primary>network</primary><secondary>address translation</secondary><seealso>NAT</seealso>	<primary>网络</primary><secondary>地址转换</secondary>
	<primary>network</primary><secondary>NAT</secondary>	<primary>网络</primary><secondary>网关</secondary>
	<primary>SNAT</primary><seealso>Source NAT</seealso>	<primary>CA</primary><see>权威认证</see>
	<primary>Source NAT</primary><seealso>SNAT</seealso>	<primary>Source NAT</primary>
	<primary>DNAT</primary><seealso>Destination NAT</seealso>	<primary>CA</primary><see>权威认证</see>
	<primary>Destination NAT</primary><seealso>DNAT</seealso>	<primary>Destination NAT</primary>

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zh-CN/10_network-infrastructure.po, string 47