Internet Control Message Protocol "Ziel nicht erreichbar" (Code 0x0D =) Pakete

IP: Source Address = <dotted-IP-address-of-router>
ICMP: Destination Unreachable: <dotted-IP-address-of-target-host>
   ICMP: Packet Type = Destination Unreachable
   ICMP: Unreachable Code = 0x0D
					

   13 = Communication Administratively Prohibited - generated if a
        router cannot forward a packet due to administrative filtering;
					

Hexadecimal  Decimal  Description
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0x00         0        Network Unreachable - generated by a router if a forwarding path
                     (route) to the destination network is not available;

0x01         1        Host Unreachable - generated by a router if a forwarding path
                      (route) to the destination host on a directly connected network
                      is not available (does not respond to ARP);

0x02         2        Protocol Unreachable - generated if the transport protocol
                      designated in a datagram is not supported in the transport layer
                      of the final destination;

0x03         3        Port Unreachable - generated if the designated transport protocol
                      (e.g., UDP) is unable to demultiplex the datagram in the
                      transport layer of the final destination but has no protocol
                      mechanism to inform the sender;

0x04         4        Fragmentation Needed and DF Set - generated if a router needs to
                      fragment a datagram but cannot since the DF flag is set;

0x05         5        Source Route Failed - generated if a router cannot forward a
                      packet to the next hop in a source route option;

0x06         6        Destination Network Unknown - This code SHOULD NOT be generated
                      since it would imply on the part of the router that the
                      destination network does not exist (net unreachable code 0
                      SHOULD be used in place of code 6);

0x07         7        Destination Host Unknown - generated only when a router can
                      determine (from link layer advice) that the destination host
                      does not exist;

0x0B         11       Network Unreachable For Type Of Service - generated by a router
                      if a forwarding path (route) to the destination network with the
                      requested or default TOS is not available;

0x0C         12       Host Unreachable For Type Of Service - generated if a router
                      cannot forward a packet because its route(s) to the destination
                      do not match either the TOS requested in the datagram or the
                      default TOS (0).

0x0D         13       Communication Administratively Prohibited - generated if a
                      router cannot forward a packet due to administrative filtering;

0x0E         14       Host Precedence Violation.  Sent by the first hop router to a
                      host to indicate that a requested precedence is not permitted
                      for the particular combination of source/destination host or
                      network, upper layer protocol, and source/destination port;

0x0F         15       Precedence cutoff in effect.  The network operators have imposed
                      a minimum level of precedence required for operation, the
                      datagram was sent with a precedence below this level;