Logo

Session Report

Summary:
Test run at: 2022-09-18 23:22:09 GMT
Client Prefix (v4): 130.217.3.x/24
Client AS (v4): 681 (ERX-KAWAIHIKO-1)
IPv4 Probes: 60
Client Prefix (v6): 2001:df0:xx::/40
Client AS (v6): 681 (ERX-KAWAIHIKO-1)
IPv6 Probes: 52
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedblocked
Routable blockedblocked
Largest spoofable neighbor prefix length none/64
Spoof status key
receivedSpoofed packet was received.Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it.
rewrittenSpoofed packet was received, but the source address was changed en route.
blockedSpoofed packet was not received, but unspoofed packet was.
unknownNeither spoofed nor unspoofed packet was received.
IPv4 AS Route:
This test run probed the following paths in order to infer your ability to send different spoofed source packets. Each node in the graph corresponds to an autonomous system, i.e. different Internet service providers. NOTE: This graph does NOT show if an AS blocks spoofed packets, only the path taken by received spoofed packets. The IP Path Details are available for this run. If non-spoofed packets weren't received at a destination, the traceroute to that destination is not included in this graph and may even cause a totally empty graph.

  

  

IPv4 Adjacent Netblock Testing:

Your host (130.217.3.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
130.217.3.x/24/31681natblock
130.217.3.x/24/30681natblock
130.217.3.x/24/29681natblock
130.217.3.x/24/28681natblock
130.217.3.x/24/27681natblock
130.217.3.x/24/26681natblock
130.217.3.x/24/25681natblock
130.217.3.x/24/24681natblock
130.217.2.x/24/23681natblock
130.217.1.x/24/22681natblock
130.217.7.x/24/21681natblock
130.217.11.x/24/20681natblock
130.217.19.x/24/19681natblock
130.217.35.x/24/18681natblock
130.217.67.x/24/17681natblock
130.217.131.x/24/16681natblock
130.216.3.x/24/159431natblock
130.219.3.x/24/1411094natblock
130.221.3.x/24/1385natblock
130.209.3.x/24/12786natblock
130.201.3.x/24/11UNROUTEDnatblock
130.249.3.x/24/10UNROUTEDnatblock
130.153.3.x/24/92907natblock
130.89.3.x/24/81133natblock

Meaning of status in Received column:

natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.

IPv4 Outbound Filtering Depth:

The tracefilter test found your host unable to spoof routable, non-adjacent source addresses through even the first IP hop.
IPv6 AS Route:
This test run probed the following paths in order to infer your ability to send different spoofed source packets. Each node in the graph corresponds to an autonomous system, i.e. different Internet service providers. NOTE: This graph does NOT show if an AS blocks spoofed packets, only the path taken by received spoofed packets. The IP Path Details are available for this run. If non-spoofed packets weren't received at a destination, the traceroute to that destination is not included in this graph and may even cause a totally empty graph.

  

  
IPv6 probes:
Spoofed source addressDestinationReceived
2001:48d0:101:501::1592001:48d0:101:501::242no
2001:4978:1fb:6400::d22001:48d0:101:501::242no
2001:49aa:111:aa00::112001:48d0:101:501::242no
fd11:1111:1111::11112001:48d0:101:501::242no
2001:48d0:101:501::1592001:48d0:101:501::247no
2001:4978:1fb:6400::d22001:48d0:101:501::247no
2001:49aa:111:aa00::112001:48d0:101:501::247no
fd11:1111:1111::11112001:48d0:101:501::247no
2001:48d0:101:501::1592001:610:510:115:192:42:115:98no
2001:4978:1fb:6400::d22001:610:510:115:192:42:115:98no
2001:49aa:111:aa00::112001:610:510:115:192:42:115:98no
fd11:1111:1111::11112001:610:510:115:192:42:115:98no
2001:48d0:101:501::1592001:630:212:225:225:90ff:fe0c:45a6no
2001:4978:1fb:6400::d22001:630:212:225:225:90ff:fe0c:45a6no
2001:49aa:111:aa00::112001:630:212:225:225:90ff:fe0c:45a6no
fd11:1111:1111::11112001:630:212:225:225:90ff:fe0c:45a6no
2001:48d0:101:501::1592001:770:1c:7:225:90ff:fe0c:acb4no
2001:4978:1fb:6400::d22001:770:1c:7:225:90ff:fe0c:acb4no
2001:49aa:111:aa00::112001:770:1c:7:225:90ff:fe0c:acb4no
fd11:1111:1111::11112001:770:1c:7:225:90ff:fe0c:acb4no
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2001:df0:xx::/40/120681yes
2001:df0:xx::/40/112681yes
2001:df0:xx::/40/104681yes
2001:df0:xx::/40/96681yes
2001:df0:xx::/40/88681yes
2001:df0:xx::/40/80681yes
2001:df0:xx::/40/72681yes
2001:df0:xx::/40/64681yes
2001:df0:xx::/40/56681no
2001:df0:xx::/40/48681no
2001:df0:xx::/40/40UNROUTEDno
2001:df0:80xx::/40/32UNROUTEDno
2001:d70:xx::/40/247671no
2001:8df0:xx::/40/161221no

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
Summary:
The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.
Feedback:
We welcome questions and feedback to the Spoofer Information Mailing List and invite users to join the Spoofer Users Mailing List for discussion and announcements.
Last Modified