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Session Report

Summary:
Test run at: 2018-10-09 16:43:55 GMT
Client Prefix (v4): 46.128.138.x/24
Client AS (v4): 35244 (KMS-DE_AS)
IPv4 Probes: 124
Client Prefix (v6): 2001:4c50:6xx::/40
Client AS (v6): 35244 (KMS-DE_AS)
IPv6 Probes: 82
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/56
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 (46.128.138.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
46.128.138.x/24/3135244natblock
46.128.138.x/24/3035244natblock
46.128.138.x/24/2935244natblock
46.128.138.x/24/2835244natblock
46.128.138.x/24/2735244natblock
46.128.138.x/24/2635244natblock
46.128.138.x/24/2535244natblock
46.128.138.x/24/2435244natblock
46.128.139.x/24/2335244natblock
46.128.136.x/24/2235244natblock
46.128.142.x/24/2135244natblock
46.128.130.x/24/2035244natblock
46.128.154.x/24/1935244natblock
46.128.170.x/24/1835244natblock
46.128.202.x/24/1735244natblock
46.128.10.x/24/1635244natblock
46.129.138.x/24/1533915natblock
46.130.138.x/24/1443733natblock
46.132.138.x/24/131759natblock
46.136.138.x/24/1212430natblock
46.144.138.x/24/111136natblock
46.160.138.x/24/1041560natblock
46.192.138.x/24/952075natblock
46.0.138.x/24/834533natblock

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 probes:
Spoofed source addressDestinationReceived
2001:48d0:101:501:ec4:7aff:fea8:71a82001:48d0:101:501::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
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2001:4c50:6xx::/40/12035244yes
2001:4c50:6xx::/40/11235244yes
2001:4c50:6xx::/40/10435244yes
2001:4c50:6xx::/40/9635244yes
2001:4c50:6xx::/40/8835244yes
2001:4c50:6xx::/40/8035244yes
2001:4c50:6xx::/40/7235244yes
2001:4c50:6xx::/40/6435244yes
2001:4c50:6xx::/40/5635244yes
2001:4c50:6xx::/40/4835244no
2001:4c50:6xx::/40/4035244no
2001:4c50:86xx::/40/3235244no
2001:4cd0:6xx::/40/248551no
2001:cc50:6xx::/40/16UNROUTEDno

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.
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