Logo

Session Report

Summary:
Test run at: 2021-10-13 16:31:06 GMT
Client Prefix (v4): 140.82.38.x/24
Client AS (v4): 20473 (AS-CHOOPA)
IPv4 Probes: 66
Client Prefix (v6): 2001:19f0:6cxx::/40
Client AS (v6): 20473 (AS-CHOOPA)
IPv6 Probes: 56
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 nonenone

Meaning of result status in column:

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 (140.82.38.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
140.82.38.x/24/3120473natblock
140.82.38.x/24/3020473natblock
140.82.38.x/24/2920473natblock
140.82.38.x/24/2820473natblock
140.82.38.x/24/2720473natblock
140.82.38.x/24/2620473natblock
140.82.38.x/24/2520473natblock
140.82.38.x/24/2420473natblock
140.82.39.x/24/2320473natblock
140.82.36.x/24/2220473natblock
140.82.34.x/24/2120473natblock
140.82.46.x/24/2020473natblock
140.82.54.x/24/1920473natblock
140.82.6.x/24/1820473natblock
140.82.102.x/24/17UNROUTEDnatblock
140.82.166.x/24/1615164natblock
140.83.38.x/24/1531898natblock
140.80.38.x/24/1427293natblock
140.86.38.x/24/1343898natblock
140.90.38.x/24/126629natblock
140.66.38.x/24/11749natblock
140.114.38.x/24/1018047natblock
140.18.38.x/24/9749natblock
140.210.38.x/24/8UNROUTEDnatblock

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
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2001:19f0:6cxx::/40/12020473natblock
2001:19f0:6cxx::/40/11220473natblock
2001:19f0:6cxx::/40/10420473natblock
2001:19f0:6cxx::/40/9620473natblock
2001:19f0:6cxx::/40/8820473natblock
2001:19f0:6cxx::/40/8020473natblock
2001:19f0:6cxx::/40/7220473natblock
2001:19f0:6cxx::/40/6420473natblock
2001:19f0:6cxx::/40/5620473natblock
2001:19f0:6cxx::/40/4820473natblock
2001:19f0:6cxx::/40/4020473natblock
2001:19f0:ecxx::/40/32UNROUTEDnatblock
2001:1970:6cxx::/40/247992natblock
2001:99f0:6cxx::/40/16UNROUTEDnatblock

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.
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