Internet Control Message Protocol - Wikipedia
The ICMP - Destination host unreachable message is one which a user would usually get from the remote gateway when the destination host is unreachable. If, in the destination host, the IP module cannot deliver the packet because the indicated protocol module or process port is not active, the destination host may send an ICMP destination centos - iptables icmp-host-prohibited - Unix & Linux My host machine has these following rules configured: # Generated by iptables-save v1.4.21 on Mon Feb 19 16:01:15 2018 *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [8:752] -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT -A INPUT -p icmp -j ACCEPT -A INPUT -i lo -j ACCEPT -A INPUT -p tcp -m state --state NEW -m tcp cannot connect to Internet(Destination Host Prohibited) Sep 25, 2011
cant ping vRouter from other hosts: Destination Host
Destination Host prohibited : Qubes - reddit r/Qubes: Qubes is an open-source operating system designed to provide strong security for desktop computing using Security by Compartmentalization … The TCP/IP Guide - ICMPv6 Destination Unreachable Messages This code is equivalent to the ICMPv4 “Host Unreachable” code and usually means the destination address was bad or there was a problem with resolving it into a layer two address. 4. Port Unreachable. The destination port specified in the UDP or TCP header was invalid or does not exist on the destination host.
Public IPv4 subnet: ping result in "Destination Host
How to Fix This Destination Host Unreachable May 01, 2020 Destination Host Unreachable vs Request Timed Out : 네이버 블로그 Destination Host Unreachable 은 네트워크를 중계해주는 라우터가 "그곳으로는 도달할 수 없습니다"라고 명확히 표현해주는 것입니다. 만약 후자의 에러가 나왔다면, 연결이 제대로 되었는지 네트워크 디바이스가 정상 작동하는지를 확인해주면 되며, ORA-12543: TNS:destination host unreachable