Questions tagged [reverse-dns]
The reverse-dns tag has no usage guidance.
26
questions
0
votes
1
answer
30
views
Reverse-DNS not correct (BIND9 DNS + ISC DHCP)
In my home network under Ubuntu I use a BIND9 DNS server and an ISC DHCP server with Webmin.
Here are my settings:
DNS Master Zone:
Foward: home.local
Reverse: 192.168.5
/etc/bind/named.conf.local:
//...
1
vote
1
answer
81
views
how do you do find out what domain an ip address is associated with?
When I do:
ping www.google.com
it comes back with a response
PING www.google.com (172.253.122.147): 56 data bytes
So this means www.google.com resolves to 172.253.122.147.
What command(s) can I run ...
4
votes
3
answers
3k
views
IP doesn't support rdns needed for email server
I'm setting up an email server for my business and personal use. I have a public static ip address from Cincinnati Bell (now altafiber). I tried getting them to setup/delegate reverse dns lookup via ...
0
votes
1
answer
272
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modify a router's reply to macOS's reverse DNS query such that hostname defaults to the .local domain
I have read that on BSD/macOS/OS X, hostname is found from a search that includes a few places. One part of the search can be a reverse DNS lookup. For DNS lookup, I observe different behavior on ...
2
votes
2
answers
11k
views
How to find dns entries for IP-address
I am trying to do a reverse DNS lookup (find DNS-entries for a specific IP-address).
A search gave me the answer to use dig and nslookup, but these tools do not work for me.
E.g. I ping superuser.com, ...
0
votes
1
answer
289
views
Should reverse-dns results resolve to the original IP?
I'm interested in taking a log file that I will review and "beautifying" its entries by replacing IPs with their reverse-DNS entries.
For instance:
75.76.69.69: meaningless
RDNS → dynamic-...
0
votes
1
answer
596
views
can i set up a reverse DNS to a public IP?
Is it possible to set up a "fake" reverse DNS to my internet public ip?
I don't want to buy a fixed IP address from the ISP and have them set up rDNS for me, I need to change my public ip ...
-1
votes
1
answer
233
views
backward nslookup ip in DNS setup centos 8
I setup a DNS server on CentOS 8.
But the command "nslookup " has not correct output. The output not contains the nameservers which I set for it.
0
votes
1
answer
57
views
Reverse DNS for my mailserver returns the (seemingly) wrong information
When I run $ dig my-domain.tld I get the correct IP address, but when I run $ dig mail.my-domain.tld I get back something that looks like this:
;; AUTHORITY SECTION:
my-domain.tld. 600 IN SOA ...
0
votes
1
answer
96
views
Clients with broken reverse DNS are slow to connect, how to fix?
Some client has no reverse DNS and that clients has long timeout on connect with different services like ftp, ssh and more. How to configure reverse dns resolution right on production servers? Maybe ...
0
votes
1
answer
5k
views
BIND create reverse zone for /21 block
LINUX, BIND9
I have a network which sits in /21 block and would like to make a reverse zone, I would like some guidance to know where to look to create the reverse zone file.
I could make seperate ...
2
votes
0
answers
47
views
What does strings like "com.google.process.gapps" mean?
I've seen things like com.google.process.gapps in a lot of places, like Android and Flatpak, etc. What does it mean? It looks like a domain reversed.
1
vote
1
answer
84
views
What is the standard for assigning rDNS to unused hosts?
In a range with unused hosts, is the standard to set the rDNS to a generic default one within the network (such as the IP address dot the company's domain name) or is rDNS not meant to be set for an ...
0
votes
1
answer
880
views
How to tell if a website is using shared hosting or just masking IP address?
When I do a reverse lookup on a certain website, it returns a Dyn IP as below:
C:\Users>nslookup xyz.com
Server: UnKnown
Address: 192.168.1.1
Non-authoritative answer:
Name: xyz.com
...
1
vote
1
answer
639
views
How to find all IP having a PTR-DNS-Entry for a domain
How to get a list of all IP having a PTR-record for a particular domain, e.g. mail.example.com
Goal is to have a list of IP that
x.y.z.a
x.y.z.b
x.y.z.c
are claiming to serv mail.example.com.
1
vote
1
answer
418
views
DKIM and Reverse Dns with sub-domain of onmicrosoft.com
When you sign up with Outlook 365 you get allocated a sub-domain like contoso.onmicrosoft.com. If you send an email from [email protected] should it not automatically be signed with DKIM or ...
0
votes
2
answers
403
views
Which hostname will a web server determine for a client via reverse DNS?
Excerpt from the book I am reading:
Most web servers can be configured to convert client IP addresses into
client hostnames, using “reverse DNS.” Web servers can use the
client hostname for ...
0
votes
0
answers
1k
views
Reverse DNS setup not working - BIND on CentOS 7
I haven't setup BIND before but am quite knowledgable with DNS (I'm from the Windows world). I'm having a reverse DNS issue. Forward DNS is working fine for the zone int.linuxlab
Here are the ...
-2
votes
1
answer
754
views
How do I create rDNS (Reverse DNS)
How to create rDNS (Reverse DNS), I am using Centos 7.0 and I need to create rDNS for 50 IP's and domain.
Can you please guide me how can I create.
Example.
Example.com - xxx.xxx.xxx.xx0
Example....
0
votes
2
answers
3k
views
Reverse DNS Zone not working properly BIND9
I am using the 10.0.0.x scheme for my LAN. I have a Raspberry Pi that hosts certain services, including DNS. I am running into a problem with what I think is my reverse zone.
The RPI is on 10.0.0.21....
0
votes
1
answer
2k
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How do I do remote logging on DD-WRT with rDNS?
Here's what I want to do:
I plan on setting up VPN on the router so that I can change the router settings remotely: http://www.howtogeek.com/51772/how-to-setup-a-vpn-server-using-a-dd-wrt-router/
...
2
votes
1
answer
4k
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How to configure a 10. network in bind? (PTR)
I'm trying to configure a zone for a 10.0.1.0/24 network.
I have rfc1918 zones defined, but then I commented out 10.in-addr.arpa network, since I'm neading it.
I then configured a db.1.0.10 file (...
0
votes
1
answer
78
views
I need a DNS longer that 40 characters
I try to debug my reverse DNS request subroutine, and I need a DNS that's longer than 40 characters, because apparently that's how many bytes Dnsapi reserves in memory.
So I want to see what happens ...
2
votes
0
answers
976
views
Is there a way to get NFS to refresh its reverse lookup without restarting it?
NFS server for some reason doesn't seem to acknowledge that avahi/mdns will resolve an ip address unless NFS is restarted after avahi is already running.
I have my exports specified by hostname (...
1
vote
2
answers
896
views
How to mask reverse lookup for domains?
is there a way to block reverse lookup sites so people can't see the other sites hosted on an IP?
Thanks.
0
votes
1
answer
3k
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How do I setup a custom hostname for my IRC daemon?
I have a registered domain and I want to make irc.mydomain.com the domain which any public user can access through port 6667.
I'm currently running ircd-hybrid but it's only setup to accept localhost ...