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Session Report

Summary:
Test run at: 2018-05-05 22:52:30 GMT
Client Prefix (v4): 185.22.172.x/24
Client AS (v4): 43317 (FISHNET-AS)
IPv4 Probes: 99
Client Prefix (v6): 2a02:1810:25xx::/40
Client AS (v6): 6848 (TELENET-AS)
IPv6 Probes: 65
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedunknown
Routable blockedunknown
Largest spoofable neighbor prefix length nonenone
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 (185.22.172.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
185.22.172.x/24/3143317natblock
185.22.172.x/24/3043317natblock
185.22.172.x/24/2943317natblock
185.22.172.x/24/2843317natblock
185.22.172.x/24/2743317natblock
185.22.172.x/24/2643317natblock
185.22.172.x/24/2543317natblock
185.22.172.x/24/2443317natblock
185.22.173.x/24/2343317natblock
185.22.174.x/24/2243317natblock
185.22.168.x/24/2160821natblock
185.22.164.x/24/20199269natblock
185.22.188.x/24/1960961natblock
185.22.140.x/24/1860294natblock
185.22.236.x/24/17197046natblock
185.22.44.x/24/1660294natblock
185.23.172.x/24/15199270natblock
185.20.172.x/24/1441966natblock
185.18.172.x/24/1329075natblock
185.30.172.x/24/1260497natblock
185.6.172.x/24/1131261natblock
185.54.172.x/24/103303natblock
185.86.172.x/24/9201397natblock
185.150.172.x/24/858324natblock

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 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2a02:1810:25xx::/40/1206848sendto
2a02:1810:25xx::/40/1126848sendto
2a02:1810:25xx::/40/1046848sendto
2a02:1810:25xx::/40/966848sendto
2a02:1810:25xx::/40/886848sendto
2a02:1810:25xx::/40/806848sendto
2a02:1810:25xx::/40/726848sendto
2a02:1810:25xx::/40/646848sendto
2a02:1810:25xx::/40/566848sendto
2a02:1810:25xx::/40/486848sendto
2a02:1810:25xx::/40/406848sendto
2a02:1810:a5xx::/40/326848sendto
2a02:1890:25xx::/40/246848sendto
2a02:9810:25xx::/40/16UNROUTEDsendto

Meaning of status in Received column:

sendtoThe spoofer client was unable to send spoofed headers due to an operating system restriction.
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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