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Session Report

Summary:
Test run at: 2018-08-06 10:06:59 GMT
Client Prefix (v4): 177.67.82.x/24
Client AS (v4): 53013
IPv4 Probes: 99
Client Prefix (v6): 2601:2c3:9xx::/40
Client AS (v6): 7922 (COMCAST-7922)
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 (177.67.82.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
177.67.82.x/24/3153013natblock
177.67.82.x/24/3053013natblock
177.67.82.x/24/2953013natblock
177.67.82.x/24/2853013natblock
177.67.82.x/24/2753013natblock
177.67.82.x/24/2653013natblock
177.67.82.x/24/2553013natblock
177.67.82.x/24/2453013natblock
177.67.83.x/24/2353013natblock
177.67.80.x/24/2253013natblock
177.67.86.x/24/2153013natblock
177.67.90.x/24/2052674natblock
177.67.66.x/24/1953011natblock
177.67.114.x/24/18262518natblock
177.67.18.x/24/17UNROUTEDnatblock
177.67.210.x/24/16262527natblock
177.66.82.x/24/15262490natblock
177.65.82.x/24/14UNROUTEDnatblock
177.71.82.x/24/1352749natblock
177.75.82.x/24/12262544natblock
177.83.82.x/24/1128573natblock
177.99.82.x/24/1018881natblock
177.3.82.x/24/98167natblock
177.195.82.x/24/828573natblock

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 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2601:2c3:9xx::/40/1207922sendto
2601:2c3:9xx::/40/1127922sendto
2601:2c3:9xx::/40/1047922sendto
2601:2c3:9xx::/40/967922sendto
2601:2c3:9xx::/40/887922sendto
2601:2c3:9xx::/40/807922sendto
2601:2c3:9xx::/40/727922sendto
2601:2c3:9xx::/40/647922sendto
2601:2c3:9xx::/40/567922sendto
2601:2c3:9xx::/40/487922sendto
2601:2c3:9xx::/40/407922sendto
2601:2c3:89xx::/40/327922sendto
2601:243:9xx::/40/247922sendto
2601:82c3:9xx::/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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