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Questions tagged [dns]

Translates domain names to IP addresses. DNS stands for Domain Name System.

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Security, recovery etc of Letsencrypt certificates

I'm looking for a description how to property secure, backup, restore etc Letsencrypt certificates, and how to recover if a server containing such certificates was hacked. Does such a description ...
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Chrome DNS cache has negative TTL and expires just after a minute

There is a similar question here, Why does Chrome have TTL -1000 in the DNS Cache? but it has not answer either. When I visit, chrome://net-internals/#dns I see a lot of DNS cache with -1000 value. ...
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Windows 10, ping FQDN doesn't work, but nslookup does

I have to deal with a strange problem which I think is related to Windows 10. Assume that I have the FQDN a.home.lan with A record 192.168.1.10 (the data is fictional) The DNS service responsible (...
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bind9 servfail /bin/named/query.c:6984

resolving a domain with dig @localhost my.domain mx ends in servfail, with the following log: 20-Oct-2018 20:57:35.356 client: debug 3: client @0x7f9ed40aa0e0 127.0.0.1#59206: UDP request 20-Oct-2018 ...
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1answer
15 views

how to make a web address available in LAN?

I have a question regarding how or what's the technology behind the scene to make a hostname available in LAN? For example, one can go to http://tplinkeap.net to directly configure your local router (...
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Synology NAS not accessible via hostname in Domain, IP Address works

We have a Synology NAS DS918+ running the latest DSM (DSM 6.2.1-23824). The Synology is linked to our Domain, and has the following networking settings: Hostname: SRVSTORAGE / IP Static (192.168.1....
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how to fix quad zero in nslookup queries?

I'm a qualified network technician (CCNA,MTCNA, MTCRE) and majoring in informatics, but this case baffled me. system : Windows 10 Pro x64 output from ipconfig /all Wireless LAN adapter Wi-Fi: ...
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Route53 does not route domain to S3 bucket [migrated]

I have set up a static website by following this link: https://docs.aws.amazon.com/AmazonS3/latest/dev/website-hosting-custom-domain-walkthrough.html I can see the website by accessing its bucket ...
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1answer
17 views

Understanding Namebench Response Distribution Chart

After a long test I get this result: As a final number I see that Google Public DNS is 171% faster than my current DNS, but when I look at this picture I see that SYS-192.168.0.1 the fastest in... ...
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1answer
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How to use two server for one domain? [closed]

Noob question,sorry if it's duplicate! I have a host from Hostinger and a Dedicated Server [ Win Server 2012 ] . What I Know : I completely know how to create DNS Server , Create Name ...
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1answer
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Is this how I indicate that only my MX IP is authorized to send email for this domain?

I would have a TXT record as such: v=spf1 mx -all which translates as "only my MX IP is authorized to send email for this domain"? NOTE: I don't want A records to be able to do so, since my web ...
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Point domain to a computer inside LAN

Is it possible to, for ex.: point domain.com to 192.168.1.10 point domain2.com to 192.168.1.11 inside my LAN network? Or even more with port forwarding: point domain.com:80 to 192.168.1.10:5000 ...
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1answer
28 views

How do I get a PTR record for an MX that points to a different IP than the A record does?

MXToolbox indicates a warning that my smtp server's header banner fails to match reverse lookup for the stated domain. This makes sense - I've got a domain with the MX set to one IP (my mail server), ...
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34 views

One ip, several subdomains on several virtual machines

I don't have a lot of knowlege on administratino but here is my situation: I have a big server with only one IP address. On this server I have 9 virtualbox machines. I want all these domains to ...
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Windows 10 can't connect with any browser except Tor

About two weeks ago I started having connectivity issues on my Windows 10 machine. Chrome, Firefox, Edge, and Steam will fail to connect to a site in nine out of ten attempts. Tor Browser has no ...

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