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

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DNS Amplification attacks [on hold]

For an academic paper,I need to simulate a DNS amplification attack and show how it can be mitigated.How to go around simulating a DDOs attack,because I don't have zombies at my disposal and I don't ...
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45 views

How to test for zone transfer? [duplicate]

I heard that it is possible to test for zone transfer attacks on a web application using host and dig commands in Linux. How it is done?
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What is the best way to run MitM attack on my wireless network?

For research purpose, I want to launch a MitM attack on computers that are connected to my wireless network. I wonder what is the best way to do so. Notice that I control the router, and do not want ...
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What is a DNS poisoning attack and how does it work? [duplicate]

So first of all is it the same as DNS cache poisoning? It's mentioned in this article http://www.infosecurity-magazine.com/news/sites-damage-china-blocks-edgecast/ in the second paragraph and would ...
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2answers
254 views

I believe my Domain has been hijacked I am not receiving in sales in shopping cart

My IP address is 181.224.153.95 Domain: www.ashaybythebay.com FTP Hostname: m23.siteground.biz I added private domain servers to my domain name ashaybythebay.com and I see the two IP server ...
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4answers
66 views

Masking IP address and port number for Web application [closed]

I have a Web application running on port 89 ( non-standard port) of a Windows 2012 R2 machine. The login page for this application needs to be accessible through a link on my website - let's call it ...
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2answers
78 views

Browser page “Not resolved” page hijacked by yandex [closed]

Any domain that cannot be resolved defaults to yandex right now, on any browser on my system. Helper objects or extensions are not installed. It turns out that the ISP (Turk Telekom) is employing ...
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Is it possible to send multiple requests from the same port number? [migrated]

Let's say I run a script to simultaneously send multiple DNS requests to 3 different DNS servers, will it share the same source port number? In other words, will those servers respond to a single ...
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3answers
61 views

How to determine if resolved ip is rogue or part of CDN?

I'm subscribed to goverment's owned ISP because only this ISP provides access to rural area. It has a bad reputation because it is not only redirects sites, but also injects JavaScript for ...
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0answers
47 views

Spoof DNS in a Rogue AP [migrated]

I am using 2 interfaces on my computer, eth0 grants access to the outside world and wlan0 is where the Access Point is set up. My configuration is based on 2 networks 192.168.1.0 on eth0 and 10.0.0.0 ...
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1answer
55 views

Force DNS to attach bad IP address

The question is not professional, but what I'm trying to say is... Is there any way to inject or force the DNS server to attach/change an IP address for some site. For example, I'm running an apache ...
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2answers
2k views

How does DigitalOcean DNS verify the owner of a domain?

Say you purchase a domain on Namecheap, but want to host DNS on DigitalOcean. DigitalOcean, says to simply tell your registrar to use DO's nameservers, then set up your DNS for that domain on DO. ...
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1answer
172 views

DNSSEC signing algorithms

Virtualmin supports a flurry of algorithms for DNSSEC: RSASHA1, RSASHA256, RSAMD5, DSA, DH, HMAC-MD5, NSEC3RSASHA1, NSEC3DSA. If I understand correctly, there's Proof of Concept available for SHA1 ...
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1answer
180 views

How can I detect a VPN connection (even just in some cases) to get the real location of the user

I'm creating a web site, I would like to allow people to sign-up only from their "real" physical location (not using a VPN). I was thinking maybe comparing local and server time... what else...? I ...
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3answers
100 views

What is same site scripting and what are some exploit scenarios?

I know it is an issue with how DNS is configured , but is it really dangerous if the attacker couldn't access your network?
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1answer
93 views

How Do I Troubleshoot a Browser Hijack on a Mac?

My Mac is getting weird redirects with Safari and Chrome, however not with Mozilla Firefox. Since I cannot find software to do malware removal on Apple products or any good information, I am at a loss ...
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2answers
161 views

Is “HTTPS” ~100% secure? [duplicate]

Before I login to a trusted website, I always check that the address bar has a green padlock and the URL has no typos. E.g: After I've seen the green padlock and checked the domain ...
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1answer
57 views

Conversant, CNAME, Cookies, and PCI complaince

We have been asked to evaluate Conversant Tracking. http://www.conversantmedia.com/solutions/enterprise-solutions From what I can tell its pretty straight forward tracking, like google re-marketing, ...
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5answers
2k views

Can I avoid DNS spoofing by typing the IP address?

The question is in the title. I have been reading about DNS spoofing. What if I were to save the IP addresses of websites I consider sensitive and then just enter the IP address when I am using a ...
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2answers
2k views

Is the Google address being spoofed on my computer?

I might use some inappropriate terminology because I am no expert, but please feel free to correct me where it is needed. I believe that a process has modified some network file on my computer, like ...
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3answers
76 views

How would I secure my hosts file?

I know the hosts file is often deemed obsolete by an actual DNS, but what is/are the best way(s) to secure a hosts file (Current Best Practice)? Example: Would I delete the hosts file, input known ...
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5answers
22k views

If I use a VPN, who will resolve my DNS requests?

Will they be resolved by my VPN provider, or by my original ISP (if left on "automatic" settings)? Would I have to manually configure a dns server, to make sure my requests will not be resolved by my ...
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1answer
367 views

Is my ISP BGP/DNS hijacking?

I've noticed some very suspicious activity from my ISP. Sometimes I would notice that when I ping google.com it would resolve to an IP which is owned by my ISP. I currently don't have an example ...
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2answers
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DNS Security Questions

I plan to use a DNS service, I'm just wondering what sort of information gets sent. Will my passwords, browsing activity flow through the DNS servers? I kind of know what a DNS is, but I'm not sure ...
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4answers
196 views

DNS spoofing of linux distribution repositories

Question(s) Is it possible to "redirect" linux-update-repos via DNS spoofing (e.g. DNS cache poisoning) to a malicious website, so that harmful software (updates) will be installed, when running the ...
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1answer
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DNS Spoofing vs DNS Cache Poisoning

What is the difference between DNS Spoofing and DNS Cache Poisoning ??? It seems like there are little differences between two attacks, with an exception that DNS server is actually might cache the ...
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What's stopping DANE? [closed]

As I understand it, DANE (RFC 6698) is a promising candidate for addressing issues with current TLS Trust Anchors (i.e. Trust Anchors). My attempt at explaining the issue: Currently, CAs are ...
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2answers
94 views

Broadband security question

I have a fixed line broadband connection at home. This morning when I tried accessing Google or Facebook through my browser (Google Chrome) I got a webpage asking me to update my flash player. I found ...
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7answers
20k views

Are services like Hide My Ass and UnoDNS reasonably safe to use?

While in Germany, I want to keep using my Netflix account, watch PBS, CNBC. I have found following services: A VPN: https://hidemyass.com/vpn/promo/1/5/ A DNS: http://www.unotelly.com/unodns/ I an ...
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2answers
409 views

How to protect and detect DNS manipulations from browser side?

After reading the question about a manipulated google analytics script I wonder how you would protect against this kind of attack. What comes to mind is setting DNS IP fixed in network configuration ...
9
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3answers
3k views

DNSSec (comcast) vs DNSCurve (OpenDNS)

I was previously using OpenDNS on my internal network. I found out today that comcast has switched over to DNSSec:Comcast DNSSec. I've did a little research on DNSSec and its benefits. I ...
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4answers
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Can a virus on the host affect the VM guest [duplicate]

let me explain my problem. The wifi on my macbook suddenly stopped working so tried to use my usb wifi adapter on a linux VM. But the funny thing is that nothing works on the guest vm either... Well ...
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91 views

Save to setup localhost.example.com to test wildcard SSL?

I have a domain with a wildcard SSL certificate (i.e. "*.example.com"). I also develop using WAMP setups, which I would like to be able to test HTTPS on. There are several tutorials on how to setup a ...
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3answers
85 views

What is the technical rationale behind intermediary email servers?

EFF's Survelliance Self-Defense (SSD) project has an illustration of how email over SMTP goes through intermediate mail exchange servers: AFAIK each intermediate servers is expected to add its own ...
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2answers
294 views

Can DNS servers log users requests for commercial use (e.g. track direct access to websites)?

How does it work? For example, could OpenDNS be tracking everything (source ip + requested url) and then selling it to who have the necessary information to correlate the ip addresses with people ...
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2answers
245 views

How could you find wildcard subdomains on websites?

Other than testing different URLs separately, is there anyway to find out if a website has a wildcard sub domain?
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Root Zone Trust Anchor Publication?

I'm reading through DNSSEC Trust Anchor Publication for the Root Zone. Section 4 lists two methods to distribute the root keys: HTTP and HTTPS. Fetching over HTTP is not secure, and fetching over ...
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2answers
276 views

Way to make “DNS unblockers” safe?

Many people who live outside the US use "DNS unblockers" such as Unblock-Us to access region restricted services such as Netflix and Hulu. My understanding of these services is that for DNS requests ...
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2answers
670 views

How does dnsleaktest.com find my DNS provider

Can't see how they find this over the web. I'm on Windows, its in my network config. It changes when I use a VPN provider, but not when I use a local socks proxy connected to a remote server over ...
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5answers
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How do big companies ensure that other people don't register a new top level domain with their name?

For example today there are ".codes", ".farm" and ".vaijes" newly available. How do big companies like google, facebook, twitter, .. keep sure that they are the first who register their name on the ...
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1answer
404 views

DNS settings compromised from WAN on Edimax ADSL router

My home network Edimax AR-7084gB ADSL modem/router with firmware verison 2.9.5.0(RUE0.C2A)3.5.18.0 was exploited from WAN few days ago. The attacker changed DNS server settings - primary server to ...
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1answer
107 views

Root/Naked domain and DDOS

Some services like Github has DDOS mitigation measures for their root/naked domain, but not other subdomain(s). What so special about the root domain concerning the DDOS attacks? [1] ...
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1answer
87 views

Is there a secure DNS provider? [closed]

Is there a secure DNS provider? Kind of alternative to DNSCrypt.
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1answer
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Is DNSSEC immune to stripping signatures?

In my opinion, it should be possible to forge DNS reply so it doesn't include DS/RRSIG/... parts for any request, thus bypassing DNSSEC validation of resolved domain. Is DNSSEC system immune to this ...
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1answer
707 views

Enabling port forwarding on port 53 on a DNS server, why is it a risk?

Well, actually I know that the risk is that somebody from an external network could access IPs and hostnames of the machines on a local network, but I am struggling to understand if this is it or if ...
3
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2answers
882 views

Blocking incoming traffic from privileged port (< 1024) to mitigate DNS DDos Amplification attacks

Hope someone can clarify. As I understand, in a DNS DDos Amplification attacks Multiple DNS queries are sent to a vulnerable name server with the source IP spoofed to that of the target server. The ...
3
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1answer
210 views

How does a client know that a DNS zone is DNSSEC protected?

Recently, I've been reading about DNSSEC and how it works. I found other questions and some very interesting answers on this and other websites related to this matter. However, I have a question to ...
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Does DNSSEC provide signed statements that a certain domain does NOT yet support DNSSEC? If not, why not?

In my security class with David Wagner, we talked about some of the reasons why DNSSEC is not widely adopted right now. One of the reasons was that for backward compatibility reasons, clients need to ...
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1answer
239 views

DNS: Conditional Forwarding

I'm currently attempting to track down a problem with a Websense Web Filter breaking SSL connections for sites in a conditional forward. To do this, I need to know exactly how a conditional forward ...
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1answer
71 views

Alternative to ICANN? [closed]

What are major DNS services offered that aren't state-controlled. Better yet, why can't we take Bitcoin's model and create a truly decentralized system with P2P DNS? I see potential reasons behind ...