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Questions tagged [dns]

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The Domain Name System (DNS) translates Internet domain and host names to IP addresses.

806 questions
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In this old InfoSec SE question regarding IDNs (International Domain Names), the OP asks if companies should "actively seek out and register domains in alternative (similar looking) character ...
Amazon Dies In Darkness's user avatar
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I'm a new user. I know some things about computer systems. I have a secure Domain Name System resolver server connection set up on this tablet device, a DNS over HTTPS connection - but I use a shared ...
Edward J's user avatar
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2 answers
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Has there been any evidence that ISPs track/log DNS look-ups to the DNS servers they operate and supply for their own users? Some of OpenNIC's public servers keep logs, so DNS servers can log (and ...
Geremia's user avatar
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My MSP supports a sub company where the parent company is supported by a different MSP. We've been working with them to increase security, so we wanted to implement DKIM for email. We have access to ...
Walter's user avatar
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First of all, I've enabled IP forwarding by setting the kernel parameter with sudo sysctl -w net.ipv4.ip_forward=1, which is a prerequisite. Then I've executed arpspoof -t 192.168.1.24 192.168.1.1 -i ...
mark's user avatar
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Can I do this by adding an NS record pointing to a server that serve the TXT record? Possibly co-hosted with my HTTPS application server?
DannyNiu's user avatar
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7 votes
2 answers
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As far as I’m aware, DHCPv4/DHCPv6 only support assigning DNS server IP addresses, which implies that DNS queries will be unencrypted. It looks like some routers support DOH and DOT now (e.g., https://...
Patrick Dark's user avatar
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I’m using ExpressVPN on my Mac. My Little Snitch firewall is showing that several applications, including my browser and a process called expressvpnd, are making requests to DNS servers set by my ISP. ...
Curious-Programmer's user avatar
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1 vote
0 answers
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In our organization we have 2 Active Directory DCs which also uses as DNS servers for all our infrastructure (user PCs, domain and non-domain servers, wi-fi clients, vpn users). I have doubts about ...
Aliaksei Kasyan's user avatar
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2 votes
0 answers
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I just switched my whole home network (about 100 devices, many IoT) to NextDNS.io. Upon checking the logs I noticed some requests recurring every few minutes to: www....
Bob Ortiz's user avatar
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2 votes
2 answers
163 views

I understand that open UDP DNS resolvers can be used to amplify DOS. Are there any pit falls such as this I need to be aware of before opening my resolver?
DylanB's user avatar
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1 answer
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As you may know, Google SafeSearch can be, and often is enforced by network admins on their networks. And according to this Google article, this is how it works: Set the DNS entry for www.google.com (...
security_paranoid's user avatar
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A review of controls and associated risks identified a use case for DNS deprovisioning procedures. Specifically, an A record was not cleaned up and the domain has embedded the organization's name. ...
user329927's user avatar
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1 vote
1 answer
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Suppose that an ARP poisoning has been done and the attacker is sitting between the victims and the router, all traffic intended for the gateway would now go through attacker. Would the attacker be ...
Jun's user avatar
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32 votes
2 answers
6k views

I often use a random ingress eg. jhjhtdf76753.example.com, working away quietly developing code on this subdomain for months, never creating a public DNS entry for the subdomain. The example.com ...
ophthal's user avatar
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