GSP
Quick Navigator

Search Site

Unix VPS
A - Starter
B - Basic
C - Preferred
D - Commercial
MPS - Dedicated
Previous VPSs
* Sign Up! *

Support
Contact Us
Online Help
Handbooks
Domain Status
Man Pages

FAQ
Virtual Servers
Pricing
Billing
Technical

Network
Facilities
Connectivity
Topology Map

Miscellaneous
Server Agreement
Year 2038
Credits
 

USA Flag

 

 

Man Pages


Manual Reference Pages  -  WALLDNS (8)

NAME

walldns - a reverse DNS wall

CONTENTS

Description
Configuration
Further details
See Also

DESCRIPTION

walldns is a reverse DNS wall. It accepts iterative DNS queries for in-addr.arpa domains from hosts around the Internet, and supplies generic responses that avoid revealing local host information.

For example, walldns provides a PTR record for 4.3.2.1.in-addr.arpa showing 4.3.2.1.in-addr.arpa as the name of IP address 1.2.3.4, and a matching A record showing 1.2.3.4 as the IP address of 4.3.2.1.in-addr.arpa.

Configuration

Normally walldns is set up by the walldns-conf(8) program.

walldns runs chrooted in the directory specified by the $ROOT environment variable, under the uid and gid specified by the $UID and $GID environment variables.

walldns listens for incoming UDP packets addressed to port 53 of $IP. It does not listen for TCP queries.

Further details

walldns rejects inverse queries, non-Internet-class queries, truncated packets, packets that contain anything other than a single question, queries for domains outside in-addr.arpa, and request types other than A, PTR, and *.

walldns does not include NS or SOA records with its responses.

walldns uses TTLs slightly over one week.

SEE ALSO

walldns-conf(8)

http://cr.yp.to/djbdns.html

Search for    or go to Top of page |  Section 8 |  Main Index


WALLDNS (8) -->

Powered by GSP Visit the GSP FreeBSD Man Page Interface.
Output converted with manServer 1.07.