app failing with no route to host netstat -nat
netstat -i
networksetup -listallnetworkservices
networksetup -getdnsservers <service>
networksetup -getsearchdomains <service>
mtr <host>
# List DNS config
export services=$(networksetup -listallnetworkservices | tail -n +2)
echo $services |while IFS= read -r service; do echo $service ; networksetup -getdnsservers $service; done;route -n get xx
ip r get xx
man networksetup
sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder
# firewall
/usr/libexec/ApplicationFirewall/socketfilterfw
# troubleshooting
nslookup google.com
dig google.com
host google.com
nslookup google.com 8.8.8.8
dig @8.8.8.8 google.com
scutil --dns
networksetup -getdnsservers Wi-Fi
networksetup -getdnsservers "USB 10/100/1000 LAN" # adjust interface name
networksetup -listallnetworkservices
dig +trace google.com
dig -x 8.8.8.8
nslookup 8.8.8.8
dig google.com MX # Mail records
dig google.com NS # Name servers
dig google.com TXT # Text records
dig google.com AAAA # IPv6 records
cat /etc/resolv.conf
sudo dscacheutil -cachedump -entries host
sudo dscacheutil -flushcache
sudo killall -HUP mDNSResponder
sudo tcpdump -i any port 53
telnet 8.8.8.8 53
nc -u 8.8.8.8 53 # UDP test
scutil --dns | grep -A 5 "resolver #"
sudo brew services list
sudo brew services stop dnsmasq
MacOs networks ip -4 a |egrep -v 'DOWN|link|utun[0-9]'https://github.com/brona/iproute2mac — See list of tools therenetstat, ifconfig, ndp, arp, route, networksetup route get xx
man networksetup
sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder
# ip ported to macos
iproute2mac
Homepage: https://github.com/brona/iproute2mac
This is CLI wrapper for basic network utilities on Mac OS X inspired with iproute2 on Linux systems.
Provided functionality is limited and command output is not fully compatible with iproute2.
For advanced usage use netstat, ifconfig, ndp, arp, route and networksetup directly.