Questions tagged [dnsmasq]
dnsmasq is a lightweight DHCP, DNS and TFTP server application for *nix platforms intended for use on small and home networks.
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How to push a local DNS resolving entry to client when an OpenVPN connection established?
I am using OpenVPN-2.4.6 clients and an OpenVPN-2.4.5 server that resides an OpenWRT(18.06.01) router.
The OVPN client connects to the server by a public DNS name of the server(i.e pubName.my.router),...
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20 views
DNSmasq on 2 interfaces
SysInfo:
ubuntu 18.04
external access point (with its own internal linux system) => interface ap1, IP: 192.168.13.1
external access point (USB stick) => interface ap0, IP: 192.168.12.1
hostapd ...
2
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1answer
31 views
Why making dnsmasq authoritative breaks CNAME resolution?
I have a CNAME set up in dnsmasq as
cname=ch1-lampe-bureau.swtk.info,switch-3
It is resolved correctly (switch-3 is a device which gets its IP via DHCP from dnsmasq):
root@rpi1 ~# host switch-3
...
-1
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0answers
30 views
Allow outbound traffic for some of the domains and IPs and block all other traffic
In a Linux host, i am trying to whitelist some domains and IP ranges for outbound traffic and blacklist all other traffic.
My use case is that user access linux host without admin right should be able ...
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1answer
37 views
Windows machine with 2 NICs
I have 2 networks connected to my work PC, we'll call them NET1 and NET2. NET1 has internet access and NET2 doesn't.
NET1 is a work network which I have no control over.
My work computer is ...
1
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0answers
46 views
Send a negative response to any AAAA DNS lookups
Neither my local networking equipment neither my ISP support IPv6. While some applications support restriction of DNS lookups to IPv4 addresses some others don't so these applications end up waiting ...
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1answer
45 views
dnsmasq: how to get conntrack numbers in query logs?
I´m currently working on a project (for school) to set up a program which analyses DNS-queries to be used in Docker-Swarm and Kubernetes. For testing purposes I received some (supposedly dnsmasq) logs....
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2answers
69 views
DHCP dnsmasq for infinite lease
I am using dnsmasq to serve IPs for about 200 vservers.
Leasetime is infinite:
dhcp-range=10.0.1.2,10.0.1.254,infinite
I don't know why, but 1 vserver changed IP. Let's say MAC address changed.
I ...
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0answers
8 views
Apache2 Retransmit Issue
I'm trying to set up a local network that serves a website using apache. I am using airbase-ng and dnsmasq to set up the network.
This is my dnsmasq.conf file:
interface=at0
dhcp-range=10.0.0.10,...
1
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0answers
121 views
Dnsmasq unable to resolve local host
I'm unable to get my local DNS server to work and totally stumped. Here's what I have done so far to make it work...
Dnsmasq configured on Ubuntu 18.04 ( Static IP: 192.168.1.100)
/etc/resolv.conf
...
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0answers
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dnsmasq: return default IP address if address cannot be resolved
dnsmasq allows to return an IP address for all DNS request:
address=/#/192.168.1.1
This will overwrite all requests.
But is there a way to return this address only if a query could not be ...
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1answer
35 views
CentOS 7.5.1804 dnsmasq starts at boot when systemd service dnsmasq is disabled
I am configuring SAMBA AD DC using SAMBA_INTERNAL DNS on CentOS 7.5.1804.
For this to work nothing should listen on port *:53/tcp while samba is starting. Something in system starts dnsmasq at boot ...
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2answers
119 views
How to serve two web applications from one domain and different paths?
I have a web app which can be accessed from http://example.com
I'm developing locally another web app which I want to access it from the same domain but different path. Let's say I want all traffic ...
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1answer
102 views
Whitelist all sub domains with rebind-domain-ok
Is it possible to whitelist a wildcard domain in dnsmasq with rebind-domain-ok?
I tried the following, but it did not work
rebind-domain-ok=/.example.com/
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1answer
202 views
Edgerouter DNSmasq send updates to BIND
TL;DR: How do I configure the Ubiquiti EdgeRouter, running DNSmasq or DHCPd, and NSupdate, to send its DHCP leases to a central BIND server?
I have a system comprised of a few Ubiquiti EdgeRouter X's ...
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1answer
48 views
Routing requests from internal network to local Apache – a dnsmasq Job?
Hey folks from serverfault, new to this network site.
I have a question regarding the configuration of a new server. Ubuntu 16.04 and Apache 2.4 will be running on the server.
We would like to allow ...
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1answer
100 views
KVM: guest with FQDN DNS resolution / no bridge
I have a (Hetzner) server with a public IP of eg. 123.123.123.123, and an additional IP of eg. 456.456.456.456.
I want to serve some private webspace apps on 123.123.123.123, including a hidden ...
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1answer
263 views
dnsmasq not forwarding request to nameserver
I'm trying to run two instances of dnsmasq on a raspberry pi, I've gotten quite far. I'm currently trying to get the first dnsmasq server to forward any request it doesn't know the answer to to the ...
0
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1answer
68 views
blok udp 53 traffic to Internet only from lan
i want to block all dns queries from lan to Internet so only server allowed to make dns requests
so i need rule to dns requests from eth0 to Internet allowed, lan to eth1 allowed, but lan to Internet ...
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1answer
657 views
Failed to start dnsmasq - A lightweight DHCP and caching DNS server
Unable to start dnsmasq on my raspberry pi 3b+ with stretch installed. Following is the error.
root@raspberrypi:/home/pi# systemctl status dnsmasq.service
● dnsmasq.service - dnsmasq - A ...
3
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1answer
126 views
dnsmasq: one domain, half private, half public?
Our internal office network has the same top-level domain as our company online presence, e.g. ourdomain.com.
For the outside world, any public hosts (eg. blog.ourdomain.com, download.ourdomain.com, ...
5
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1answer
151 views
Large AXFR through dnsmasq causes dig to hang with partial results
I'm attempting to set up dnsmasq as a local cache for consul. While this seems to work fine for normal digs, dnsmasq seems to only allow partial zone transfers.
My resolv.conf:
search x.domain.com y....
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0answers
26 views
How to make dnsmasq to indicate which upstream server's answer has been forwarded?
I'd like dnsmasq to indicate somehow (to the client performing the dns request) which upstream nameserver each dns response did come from.
I have more nameservers configured for dnsmasq in resolv-...
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0answers
234 views
How to let dnsmasq transfer a reverse zone?
Following the documentation for auth-zone, I tried to declare my dnsmasq server as authoritative for the 10.0.0.0/8 zone (I serve several IP sub-ranges in 10.x).
Unfortunately, whatever I try I end ...
0
votes
1answer
195 views
How to resolve dns in multiple name servers?
resolv.conf
domain example.com
nameserver 192.168.122.54
nameserver 192.168.124.44
Take this as the sample resolv.conf. The scenario is that the DNS tries to resolve in the first name ...
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0answers
34 views
Why wouldn't dnsmasq respond to a client?
I discovered recently an issue on a otherwise working server. It was updated in the past months so there may have been changed between the time when "everything was fine" and today.
This server hosts ...
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0answers
9 views
Trigger agreement page automatically when connecting to Captive Portal [duplicate]
I have a WiFi hotspot setup using Hostapd and Dnsmasq. Everything works great, but I'm trying to trigger the sort of Terms and Conditions page you might see at a hotel or coffee shop after you connect ...
0
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1answer
49 views
Pull DNS entries from Dnsmasq to other DNS server
Background
My department has a development network that is based on the idea of bringing up lots of local LANs for testing equipment in various configurations. The bridging development network ...
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0answers
149 views
AWS AmazonProvidedDNS appears to not respecting TTL - can we do anything?
We have several servers on AWS EC2 that are not obeying TTL values from DNS. Route tables are set up to us "AmazonProvidedDNS" It appears the the "AmazonProvidedDNS" limits TTL to 60 seconds.
Q: Is ...
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dnsmasq: stuck in DHCPOFFER after 29 clients
System: Ubuntu 16.0.4.4 LTS
Fresh installed dnsmasq serving clients on wifi interface via hostapd.
Everything works fine until the number of clients reach 29 - 30. (checked via leases file)
After ...
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1answer
173 views
How to cache DNS TXT lookups with dnsmasq
We use dnsmasq on our Debian servers to cache DNS queries. This works find for A and CNAME queries. However, I notice that dnsmasq does not cache TXT queries. You can see this here:
2018-07-23T08:18:...
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1answer
686 views
How to understand dnsmasq logs?
I have dnsmasq installed on server and it is heavily used.I have following dnsmasq log in the /var/log/syslog when given the signal "SIGUSR1"
Jul 16 13:45:50 server1 dnsmasq[427008]: time 1531748750
...
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1answer
202 views
Auto-trigger captive portal agreement page display
I have a WiFi hotspot setup using Hostapd and Dnsmasq. Everything works great, but I'm trying to trigger the sort of Terms and Conditions page you might see at a hotel or coffee shop after you connect ...
0
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1answer
509 views
How does DNSMasq integrate with my router?
Context
I've successfully installed DNSMasq on a Debian machine and everything seems to be working. Here's what I did:
install DNSMasq with sudo apt-get install dnsmasq
update file /etc/dnsmasq.d/...
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0answers
142 views
dnsmasq only respond to the queries which are sent from the subnet where it's running
Here is my config:
# grep -v '^ *#' /etc/dnsmasq.conf | grep -v '^ *$'
domain-needed
bogus-priv
no-resolv
server=8.8.8.8
server=8.8.4.4
local=/loc/
address=/example.com/127.0.0.127
listen-address=10....
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0answers
659 views
dnsmasq: Job for dnsmasq.service failed
I cannot get dnsmasq working after the installation. The installation produces Job for dnsmasq.service failed. See 'systemctl status dnsmasq.service' and 'journalctl -xn' for details. error message. ...
0
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1answer
147 views
Filtering and redirecting websites using dnsmasq
I've got a LAN connected to fibre router/modem for internet access, four client machines and low powered SBC running Ubuntu Server and Nginx. I'm wanting to use the SBC to filter out requests for ...
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0answers
77 views
dnsmasq allow a specific domain to resolve IP
DNSMasq is being used to resolved all domains to resolve to local domains, which is working perfectly fine with below line of code
address=/#/192.168.10.10
So type - o.com/abcd.com/googl.com and it ...
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1answer
114 views
DNS requests made for an HTTPS website don't go through dnsmasq
I'm trying to set up dnsmasq to block some websites, but it only works when accessing that site via http and not when accessing it via https.
Is it somehow not possible to block https requests via ...
0
votes
1answer
465 views
DHCP IP assignment in dnsmasq
I have the following configuration in my dnsmasq.conf:
dhcp-range=172.16.0.100,172.16.0.254,255.255.255.0,12h
From range 172.16.0.1-99 we assign static IP address to important servers and from 172....
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0answers
325 views
How to make local DNSMasq take precedence over upstream DNS servers
How to make local DNSMasq take precedence over upstream DNS servers
I'm running a cluster of Consul agents on Ubuntu Server 16.04. I want programs running on the nodes to make use of Consul DNS ...
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0answers
33 views
Split nameservers in dnsmasq configuration
I'm configuring my device in order to use it as dhcp server for any client connected to its WiFi or Eth interface.
I'm using dnsmasq for this task.
I want to use different nameserver for the two ...
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0answers
155 views
Queries from Docker container to DNSMasq running on host don't work for a long time… and then they do :)
On my host (Ubuntu Server 16.04) I'm running a DNSMasq server bound to all network interfaces on port 53. It forwards queries matching consul top-level domain to a DNS server running on 127.0.0.1:8600 ...
0
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1answer
36 views
Wildcard subdomain routing from WAN to LAN
My current setup:
I don't have a static IP from my ISP, so I run my own ddns on a Google Cloud instance
The ddns I'm running is a docker image from https://github.com/dprandzioch/docker-ddns, and I ...
google-cloud-platform
-2
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1answer
238 views
Clear DHCP lease on disconnect [closed]
I have a rather specific situation where i'm at a bit of a loss on how to do things properly so i figured it was time to ask for help.
Situation is: i have a Raspberry Pi with a 3G modem as well as ...
1
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2answers
298 views
How to add a CAA record to dnsmasq?
I'm trying to add CAA records to my DNS server that uses dnsmasq, but haven't bee successfull. The CAA helper site tells me to use "--dns-rr=sitename" -option, but I have no idea where to put them. I ...
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0answers
295 views
Dnsmasq not giving out second DNS
Dnsmasq version 2.79 on MacOS 10.12.6 using Homebrew.
This is my dnsmasq config:
# Never forward plain names (without a dot or domain part)
domain-needed
# Never forward addresses in the non-routed ...
0
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0answers
30 views
How to override the provided address?
I use dnsmasq to both serve DHCP and DNS. Machines present their hostnames and get an IP address. Subsequently, during a name translation the same information is reused.
I have one host (seafile) ...
1
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0answers
28 views
How to set the -h, --no-hosts for KVMs dnsmasq instance
I have KVM based VMs running on my laptop and the VMs getting names resolved via KVM's dnsmasq DNS server. However the KVM's dnsmasq DNS server resolves also names in the hosts /etc/hosts file which ...
0
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0answers
439 views
Force redirect to url with captive portal or dnsmasq
We are trying to host a static webpage (just one index.php) on a local wifi network without internet access. Essentially every user (mobile devices) should land on some landing page where he can ...
