Archive mensuelles: décembre 2014

DNS help with a web spider

I am running a simple PERL web spider at home on a linux computer. When running 20 or more threads I tend to take down my router. This has been something i’ve looked into from time to time over the years.

I use dd-wrt and when the network starts to really slow down there are thousands of connections – with 3/4 of them being UDP to whatever DNS servers I try at the time …

Am I getting rate limited by DNS from doing too many lookups? Is there a way around this? I imagine hosting my own DNS server would be a nightmare but im ok with it - as the records im looking up are not super critical…

submitted by mxtszlpc
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Made a DNS change for the company website and everyone on the internet can see the change.. EXCEPT for any computer within our office. What's going on? It's been more than 24 hours.

I was on a client site and made point to a new server, which worked almost immediatly. Everyone else sees that resolves to a new IP address EXCEPT for everyone in our office. We’re all behind the same router, so I restarted the router in case it was caching an old value.

I’m work with DNS from time to time, but have never seen this happen. People are getting angry and I have zero idea where to begin.

Any pointers? Thank you!

submitted by bent_my_wookie
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Fedora RPM specs for pdnsd and dnscrypt-proxy

If you happen to be looking for RPMs for pdnsd and dnscrypt-proxy on Fedora, you can use my RPM specs to build RPMS to install on your Fedora Linux machine. I’ve tested them to work on Fedora 19. The original pdnsd SPEC has a bug that causes rpmbuild to fail and the original dnscrypt-proxy SPEC lacks systemd support, so there’s no service to start and stop.

PDNSD is a basically a local caching proxy.

DNSCrypt proxy allows you to connect to query OpenDNS server and mitigate DNS attacks e.g. when behind the GFW.

submitted by Syncopat3d
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Trying to figure out how to link a subdomain to a specific port.

Hey there. I run a minecraft server and I’m having a bit of issues figuring out the best approach to accessing ports using either subdomains or ports at the end of a url.

With both my servers they’re using an SRV record, so those are fine. However, with my admin panel and dynmap page, I can’t seem to get it set up either way.

I’d assumed that I could set up an iframe redirect, but I don’t see this in my Cloudflare DNS control panel. Googling iframe redirect cloudflare brought me to « page rules » but having gone through it, I don’t see anything useful. I can create a redirect but it just leads to the exposed IP address of the server.

I understand that I can create a reverse proxy server, but I am having the issue of not being able to locate the .htaccess file on Ubuntu 14.04 LTS and not understanding how to deal with creating a subdomain correctly at that point.

I’m guessing that I’d have to set up another SRV record and that the reverse proxy would deliver the html as expected? My understanding is that SRV records can’t process HTML and browsers would be incompatible with that information. I’m probably screwing this up very badly.

submitted by PutoGonzalez
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