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Tag Archives: DNS

Fail Open DNS Servers

23-Nov-09

Closing open DNS server. Add the following to your named.conf file. Add the following, replacing mainIP and secondaryIP with your systems nameservers. acl “trusted” { mainIP;secondaryIP;127.0.0.1; }; Example: acl “trusted” { mainIP;secondaryIP;firstserverip;secondserverip;127.0.0.1; }; Only the trusted IP is allowed for certain functions. allow-recursion { trusted; }; allow-notify { trusted; }; allow-transfer { trusted; }; Example: [...]

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OpenDNS is a free DNS resolution service

14-Nov-09

OpenDNS is a free DNS resolution service OpenDNS nameserver IP addresses are: 208.67.220.220 208.67.222.222 Some routers and devices need a third or fourth nameserver IP address. Use these if necessary (identical service to the original two): 208.67.220.222 208.67.222.220 OpenDNS offers DNS resolution for consumers and businesses as an alternative to using their Internet service provider’s [...]

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