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Session Report

Summary:
Test run at: 2020-10-08 17:21:03 GMT
Client Prefix (v4): 172.111.128.x/24
Client AS (v4): 61317 (ASDETUK)
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /24
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 Adjacent Netblock Testing:

Your host (172.111.128.x/24) can spoof 255 neighboring addresses (within your /24 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
172.111.128.x/24/3161317yes
172.111.128.x/24/3061317yes
172.111.128.x/24/2961317yes
172.111.128.x/24/2861317yes
172.111.128.x/24/2761317yes
172.111.128.x/24/2661317yes
172.111.128.x/24/2561317yes
172.111.128.x/24/2461317yes
172.111.129.x/24/239009no
172.111.130.x/24/229009no
172.111.132.x/24/2161317no
172.111.136.x/24/203223no
172.111.144.x/24/199009no
172.111.160.x/24/1832489no
172.111.192.x/24/1736351no
172.111.0.x/24/16UNROUTEDno
172.110.128.x/24/15UNROUTEDno
172.109.128.x/24/145650no
172.107.128.x/24/1340676no
172.103.128.x/24/1225668no
172.127.128.x/24/117018no
172.79.128.x/24/105650no
172.47.128.x/24/921928no
172.239.128.x/24/8UNROUTEDno

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)

IPv4 Outbound Filtering Depth:

The tracefilter test found your host unable to spoof routable, non-adjacent source addresses through even the first IP hop.
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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