通过在主DNS服务器和辅助DNS服务器之间设置TSIG密钥,可以确保传输过程中的数据不会被篡改或冒充。TSIG认证可以有效防止中间人攻击和数据篡改。 3. 配置防火墙规则 在网络层面上,应当配置防火墙规则来限制DNS服务器之间的通信。只允许特定端口和协议(通常是TCP和UDP的53端口)的流量通过,并且应该限制源IP和目标IP的访问。
Understanding zones and zone transfer Domain Name System (DNS) allows a DNS namespace to be divided up into zones, which store name information about one or more DNS domains. For each DNS domain name included in a zone, the zone becomes the authoritative source for information about that doma...
DNS protocols to provide an incremental zone transfer (IXFR) mechanism.For rapid propagation of changes to a DNS database [STD13], it is necessary to reduce latency by actively notifying servers of the change. This is accomplished by the NOTIFY extension of the DNS [NOTIFY]. The current ...
(1)Primary DNS Server(Master) 一个域的主服务器保存着该域的zone配置文件,该域所有的配置、更改都是在该服务器上进行,本篇随笔要讲解的也是如何配置一个域的主DNS服务器。 (2)Secondary DNS Server(Slave) 域从服务器一般都是作为冗余负载使用,一个域的从服务器是从该域的主服务器上抓取zone配置文件,从服...
为了保护DNS的区域传送(zone transfer),你应该配置防火墙以阻止1. UDP2. TCP3. 534. 52 A. 1,3 B. 2
When changes are made to the zone on a master server, these changes must be replicated to all the secondary servers for that zone, using a mechanism calledzone transfer. In the original DNS specifications, only one form of zone transfer was available, known as full zone transfer. New RFCs ...
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You can also do an incremental transfer, where the secondary DNS server gets new and changed resource records. A zone transfer forces a check of the version number in the master server Start of Authority (SOA) record. If the version number on the master server is higher than the secondary ...
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(if this format is specified by the masterfile-format option) when named dumps the zone contents after zone transfer or when applying prior updates. If a zone file in a binary format needs manual modification, it first must be converted to a textual form by the named-compilezone command. ...