dns

DNS not working within docker containers when host uses dnsmasq and Google’s DNS server are firewalled?

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A clean solution is to configure docker+dnsmasq so than DNS requests from the docker container are forwarded to the dnsmasq daemon running on the host. For that, you need to configure dnsmasq to listen to the network interface used by docker, by adding a file /etc/NetworkManager/dnsmasq.d/docker-bridge.conf: $ cat /etc/NetworkManager/dnsmasq.d/docker-bridge.conf listen-address=172.17.0.1 Then restart network manager to … Read more

GitHub Pages https/www Redirect

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What worked for me: Change your custom domain to be prefixed with www., like this: Save the settings and wait until www.example.com resolves and works. Remove the www. prefix and save again. Wait for browser and DNS caches to invalidate. All combinations should lead to https://example.com/ and no SSL error should appear.

Meaning of the five fields of the ANSWER SECTION in dig query

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Reference: http://www.zytrax.com/books/dns/ch15/#answer and http://www.zytrax.com/books/dns/ch8/a.html The first field is the NAME: The domain name being returned The second field (108 in your example) is the TTL in seconds. IN is the CLASS. Here, IN stands for Internet. A is the TYPE. Here, A stands for mapping a domain name to an IPv4 address. The last field … Read more

Mac Os X Terminal: How to view a domain’s zone file?

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→ dig -t ANY stackoverflow.com ; <<>> DiG 9.6.0-APPLE-P2 <<>> -t ANY stackoverflow.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 20242 ;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;stackoverflow.com. IN ANY ;; ANSWER SECTION: stackoverflow.com. 1202 IN A 64.34.119.12 … Read more

Getting the IP address of server in ASP.NET?

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This should work: //this gets the ip address of the server pc public string GetIPAddress() { IPHostEntry ipHostInfo = Dns.GetHostEntry(Dns.GetHostName()); // `Dns.Resolve()` method is deprecated. IPAddress ipAddress = ipHostInfo.AddressList[0]; return ipAddress.ToString(); } http://wec-library.blogspot.com/2008/03/gets-ip-address-of-server-pc-using-c.html OR //while this gets the ip address of the visitor making the call HttpContext.Current.Request.UserHostAddress; http://www.geekpedia.com/KB32_How-do-I-get-the-visitors-IP-address.html