how to disable LLMNR on ubuntu 17.10
0
My understanding is that if i am using third party dns (google, etc) or dns provided by my ISP(comcast, etc) i do not need this feature on. I am attempting to disable it but setting LLMNR=no in /etc/systemd/resolved.conf and restarting the box does not seem to work.
How can i go about achieving this goal?
Thanks
linux ubuntu systemd systemd-resolved
edited Jan 11 '18 at 13:34
GAD3R
27.3k1858113
asked Jan 11 '18 at 0:32
user964491user964491
1011
bumped to the homepage by Community♦ 12 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
add a comment |
0
My understanding is that if i am using third party dns (google, etc) or dns provided by my ISP(comcast, etc) i do not need this feature on. I am attempting to disable it but setting LLMNR=no in /etc/systemd/resolved.conf and restarting the box does not seem to work.
How can i go about achieving this goal?
Thanks
linux ubuntu systemd systemd-resolved
edited Jan 11 '18 at 13:34
GAD3R
27.3k1858113
asked Jan 11 '18 at 0:32
user964491user964491
1011
bumped to the homepage by Community♦ 12 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
LLMNR and DNS are not mutually exclusive, they complement each other. LLMNR only resolves link-local names, i.e. the names of the computers on your local LAN. A "third-party" DNS server, on the other hand, does not resolve your link-local host names to IP addresses, unless you have registered your own domain and entered records for your hosts.
– Johan Myréen
Jan 11 '18 at 7:45
How did you determine that LLMNR was disabled after editing the config file? Also note that you will have to ensureMulticastDNSis also turned off, since mDNS provides a similar service.
– Johan Myréen
Jan 11 '18 at 7:49
add a comment |
0
0
0
My understanding is that if i am using third party dns (google, etc) or dns provided by my ISP(comcast, etc) i do not need this feature on. I am attempting to disable it but setting LLMNR=no in /etc/systemd/resolved.conf and restarting the box does not seem to work.
How can i go about achieving this goal?
Thanks
linux ubuntu systemd systemd-resolved
edited Jan 11 '18 at 13:34
GAD3R
27.3k1858113
asked Jan 11 '18 at 0:32
user964491user964491
1011
My understanding is that if i am using third party dns (google, etc) or dns provided by my ISP(comcast, etc) i do not need this feature on. I am attempting to disable it but setting LLMNR=no in /etc/systemd/resolved.conf and restarting the box does not seem to work.
How can i go about achieving this goal?
Thanks
linux ubuntu systemd systemd-resolved
linux ubuntu systemd systemd-resolved
edited Jan 11 '18 at 13:34
GAD3R
27.3k1858113
asked Jan 11 '18 at 0:32
user964491user964491
1011
edited Jan 11 '18 at 13:34
GAD3R
27.3k1858113
asked Jan 11 '18 at 0:32
user964491user964491
1011
edited Jan 11 '18 at 13:34
GAD3R
27.3k1858113
edited Jan 11 '18 at 13:34
GAD3R
27.3k1858113
edited Jan 11 '18 at 13:34
GAD3R
27.3k1858113
27.3k1858113
asked Jan 11 '18 at 0:32
user964491user964491
1011
asked Jan 11 '18 at 0:32
user964491user964491
1011
asked Jan 11 '18 at 0:32
user964491user964491
1011
1011
bumped to the homepage by Community♦ 12 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
bumped to the homepage by Community♦ 12 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
LLMNR and DNS are not mutually exclusive, they complement each other. LLMNR only resolves link-local names, i.e. the names of the computers on your local LAN. A "third-party" DNS server, on the other hand, does not resolve your link-local host names to IP addresses, unless you have registered your own domain and entered records for your hosts.
– Johan Myréen
Jan 11 '18 at 7:45
How did you determine that LLMNR was disabled after editing the config file? Also note that you will have to ensureMulticastDNSis also turned off, since mDNS provides a similar service.
– Johan Myréen
Jan 11 '18 at 7:49
add a comment |
LLMNR and DNS are not mutually exclusive, they complement each other. LLMNR only resolves link-local names, i.e. the names of the computers on your local LAN. A "third-party" DNS server, on the other hand, does not resolve your link-local host names to IP addresses, unless you have registered your own domain and entered records for your hosts.
– Johan Myréen
Jan 11 '18 at 7:45
How did you determine that LLMNR was disabled after editing the config file? Also note that you will have to ensureMulticastDNSis also turned off, since mDNS provides a similar service.
– Johan Myréen
Jan 11 '18 at 7:49
LLMNR and DNS are not mutually exclusive, they complement each other. LLMNR only resolves link-local names, i.e. the names of the computers on your local LAN. A "third-party" DNS server, on the other hand, does not resolve your link-local host names to IP addresses, unless you have registered your own domain and entered records for your hosts.
– Johan Myréen
Jan 11 '18 at 7:45
LLMNR and DNS are not mutually exclusive, they complement each other. LLMNR only resolves link-local names, i.e. the names of the computers on your local LAN. A "third-party" DNS server, on the other hand, does not resolve your link-local host names to IP addresses, unless you have registered your own domain and entered records for your hosts.
– Johan Myréen
Jan 11 '18 at 7:45
How did you determine that LLMNR was disabled after editing the config file? Also note that you will have to ensure
MulticastDNS is also turned off, since mDNS provides a similar service.– Johan Myréen
Jan 11 '18 at 7:49
How did you determine that LLMNR was disabled after editing the config file? Also note that you will have to ensure
MulticastDNS is also turned off, since mDNS provides a similar service.– Johan Myréen
Jan 11 '18 at 7:49
add a comment |
1 Answer
1
active
oldest
votes
0
After adding LLMNR=no to /etc/systemd/resolved.conf you should start the systemd-resolved.service service:
sudo systemctl start systemd-resolved.service
Then create a symlink:
sudo ln -s /run/systemd/resolve/resolv.conf /etc/resolv.conf
enable the service:
sudo systemctl enable systemd-resolved.service
edited Jan 11 '18 at 13:56
Johan Myréen
7,86211625
answered Jan 11 '18 at 13:40
GAD3RGAD3R
27.3k1858113
Since the OP was asking how to disable LLMNR, he/she already hadsystemd-resolvedenabled and running. A restart is probably a good idea after changing the configuration, though.
– Johan Myréen
Jan 11 '18 at 14:02
@JohanMyréen By default thesystemd-resolvedis disable also making the/run/systemd/resolve/resolv.confaccessible from/etc/resolv.confby creating a symlink.
– GAD3R
Jan 11 '18 at 14:04
The OP asked how to disable LLMNR provided bysystemd-resolved, so I don't see how this applies to a situation weresystemd-resolvedwas not enabled, regardless of what the default is.
– Johan Myréen
Jan 11 '18 at 14:09
add a comment |
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0
After adding LLMNR=no to /etc/systemd/resolved.conf you should start the systemd-resolved.service service:
sudo systemctl start systemd-resolved.service
Then create a symlink:
sudo ln -s /run/systemd/resolve/resolv.conf /etc/resolv.conf
enable the service:
sudo systemctl enable systemd-resolved.service
edited Jan 11 '18 at 13:56
Johan Myréen
7,86211625
answered Jan 11 '18 at 13:40
GAD3RGAD3R
27.3k1858113
Since the OP was asking how to disable LLMNR, he/she already hadsystemd-resolvedenabled and running. A restart is probably a good idea after changing the configuration, though.
– Johan Myréen
Jan 11 '18 at 14:02
@JohanMyréen By default thesystemd-resolvedis disable also making the/run/systemd/resolve/resolv.confaccessible from/etc/resolv.confby creating a symlink.
– GAD3R
Jan 11 '18 at 14:04
The OP asked how to disable LLMNR provided bysystemd-resolved, so I don't see how this applies to a situation weresystemd-resolvedwas not enabled, regardless of what the default is.
– Johan Myréen
Jan 11 '18 at 14:09
add a comment |
0
After adding LLMNR=no to /etc/systemd/resolved.conf you should start the systemd-resolved.service service:
sudo systemctl start systemd-resolved.service
Then create a symlink:
sudo ln -s /run/systemd/resolve/resolv.conf /etc/resolv.conf
enable the service:
sudo systemctl enable systemd-resolved.service
edited Jan 11 '18 at 13:56
Johan Myréen
7,86211625
answered Jan 11 '18 at 13:40
GAD3RGAD3R
27.3k1858113
Since the OP was asking how to disable LLMNR, he/she already hadsystemd-resolvedenabled and running. A restart is probably a good idea after changing the configuration, though.
– Johan Myréen
Jan 11 '18 at 14:02
@JohanMyréen By default thesystemd-resolvedis disable also making the/run/systemd/resolve/resolv.confaccessible from/etc/resolv.confby creating a symlink.
– GAD3R
Jan 11 '18 at 14:04
The OP asked how to disable LLMNR provided bysystemd-resolved, so I don't see how this applies to a situation weresystemd-resolvedwas not enabled, regardless of what the default is.
– Johan Myréen
Jan 11 '18 at 14:09
add a comment |
0
0
0
After adding LLMNR=no to /etc/systemd/resolved.conf you should start the systemd-resolved.service service:
sudo systemctl start systemd-resolved.service
Then create a symlink:
sudo ln -s /run/systemd/resolve/resolv.conf /etc/resolv.conf
enable the service:
sudo systemctl enable systemd-resolved.service
edited Jan 11 '18 at 13:56
Johan Myréen
7,86211625
answered Jan 11 '18 at 13:40
GAD3RGAD3R
27.3k1858113
After adding LLMNR=no to /etc/systemd/resolved.conf you should start the systemd-resolved.service service:
sudo systemctl start systemd-resolved.service
Then create a symlink:
sudo ln -s /run/systemd/resolve/resolv.conf /etc/resolv.conf
enable the service:
sudo systemctl enable systemd-resolved.service
edited Jan 11 '18 at 13:56
Johan Myréen
7,86211625
answered Jan 11 '18 at 13:40
GAD3RGAD3R
27.3k1858113
edited Jan 11 '18 at 13:56
Johan Myréen
7,86211625
edited Jan 11 '18 at 13:56
Johan Myréen
7,86211625
edited Jan 11 '18 at 13:56
Johan Myréen
7,86211625
7,86211625
answered Jan 11 '18 at 13:40
GAD3RGAD3R
27.3k1858113
answered Jan 11 '18 at 13:40
GAD3RGAD3R
27.3k1858113
answered Jan 11 '18 at 13:40
GAD3RGAD3R
27.3k1858113
27.3k1858113
Since the OP was asking how to disable LLMNR, he/she already hadsystemd-resolvedenabled and running. A restart is probably a good idea after changing the configuration, though.
– Johan Myréen
Jan 11 '18 at 14:02
@JohanMyréen By default thesystemd-resolvedis disable also making the/run/systemd/resolve/resolv.confaccessible from/etc/resolv.confby creating a symlink.
– GAD3R
Jan 11 '18 at 14:04
The OP asked how to disable LLMNR provided bysystemd-resolved, so I don't see how this applies to a situation weresystemd-resolvedwas not enabled, regardless of what the default is.
– Johan Myréen
Jan 11 '18 at 14:09
add a comment |
Since the OP was asking how to disable LLMNR, he/she already hadsystemd-resolvedenabled and running. A restart is probably a good idea after changing the configuration, though.
– Johan Myréen
Jan 11 '18 at 14:02
@JohanMyréen By default thesystemd-resolvedis disable also making the/run/systemd/resolve/resolv.confaccessible from/etc/resolv.confby creating a symlink.
– GAD3R
Jan 11 '18 at 14:04
The OP asked how to disable LLMNR provided bysystemd-resolved, so I don't see how this applies to a situation weresystemd-resolvedwas not enabled, regardless of what the default is.
– Johan Myréen
Jan 11 '18 at 14:09
Since the OP was asking how to disable LLMNR, he/she already had
systemd-resolved enabled and running. A restart is probably a good idea after changing the configuration, though.– Johan Myréen
Jan 11 '18 at 14:02
Since the OP was asking how to disable LLMNR, he/she already had
systemd-resolved enabled and running. A restart is probably a good idea after changing the configuration, though.– Johan Myréen
Jan 11 '18 at 14:02
@JohanMyréen By default the
systemd-resolved is disable also making the /run/systemd/resolve/resolv.conf accessible from /etc/resolv.conf by creating a symlink.– GAD3R
Jan 11 '18 at 14:04
@JohanMyréen By default the
systemd-resolved is disable also making the /run/systemd/resolve/resolv.conf accessible from /etc/resolv.conf by creating a symlink.– GAD3R
Jan 11 '18 at 14:04
The OP asked how to disable LLMNR provided by
systemd-resolved, so I don't see how this applies to a situation were systemd-resolved was not enabled, regardless of what the default is.– Johan Myréen
Jan 11 '18 at 14:09
The OP asked how to disable LLMNR provided by
systemd-resolved, so I don't see how this applies to a situation were systemd-resolved was not enabled, regardless of what the default is.– Johan Myréen
Jan 11 '18 at 14:09
add a comment |
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LLMNR and DNS are not mutually exclusive, they complement each other. LLMNR only resolves link-local names, i.e. the names of the computers on your local LAN. A "third-party" DNS server, on the other hand, does not resolve your link-local host names to IP addresses, unless you have registered your own domain and entered records for your hosts.
– Johan Myréen
Jan 11 '18 at 7:45
How did you determine that LLMNR was disabled after editing the config file? Also note that you will have to ensure
MulticastDNSis also turned off, since mDNS provides a similar service.– Johan Myréen
Jan 11 '18 at 7:49