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Session Report

Summary:
Test run at: 2020-10-23 16:26:17 GMT
Client Prefix (v4): 173.44.50.x/24
Client AS (v4): 8100 (ASN-QUADRANET-GLOBAL)
IPv4 Probes: 75
Client Prefix (v6): 2607:ff48:aaxx::/40
Client AS (v6): 8100 (ASN-QUADRANET-GLOBAL)
IPv6 Probes: 68
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
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 (173.44.50.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
173.44.50.x/24/318100natblock
173.44.50.x/24/308100natblock
173.44.50.x/24/298100natblock
173.44.50.x/24/288100natblock
173.44.50.x/24/278100natblock
173.44.50.x/24/268100natblock
173.44.50.x/24/258100natblock
173.44.50.x/24/248100natblock
173.44.51.x/24/238100natblock
173.44.48.x/24/228100natblock
173.44.54.x/24/218100natblock
173.44.58.x/24/208100natblock
173.44.34.x/24/198100natblock
173.44.18.x/24/18UNROUTEDnatblock
173.44.114.x/24/1711776natblock
173.44.178.x/24/1662904natblock
173.45.50.x/24/15UNROUTEDnatblock
173.46.50.x/24/1422523natblock
173.40.50.x/24/13UNROUTEDnatblock
173.36.50.x/24/12109natblock
173.60.50.x/24/115650natblock
173.12.50.x/24/107922natblock
173.108.50.x/24/910507natblock
173.172.50.x/24/811427natblock

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::1592001:48d0:101:501::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
2001:48d0:101:501::1592001:48d0:101:501::247no
2001:4978:1fb:6400::d22001:48d0:101:501::247no
2001:49aa:111:aa00::112001:48d0:101:501::247no
fd11:1111:1111::11112001:48d0:101:501::247no
2001:48d0:101:501::1592001:610:510:115:192:42:115:98no
2001:4978:1fb:6400::d22001:610:510:115:192:42:115:98no
2001:49aa:111:aa00::112001:610:510:115:192:42:115:98no
fd11:1111:1111::11112001:610:510:115:192:42:115:98no
2001:48d0:101:501::1592001:630:212:225:225:90ff:fe0c:45a6no
2001:4978:1fb:6400::d22001:630:212:225:225:90ff:fe0c:45a6no
2001:49aa:111:aa00::112001:630:212:225:225:90ff:fe0c:45a6no
fd11:1111:1111::11112001:630:212:225:225:90ff:fe0c:45a6no
2001:48d0:101:501::1592001:770:18:7:225:90ff:fe0c:acb4no
2001:4978:1fb:6400::d22001:770:18:7:225:90ff:fe0c:acb4no
2001:49aa:111:aa00::112001:770:18:7:225:90ff:fe0c:acb4no
fd11:1111:1111::11112001:770:18:7:225:90ff:fe0c:acb4no
2001:48d0:101:501::1592001:df0:4:800:21c:c0ff:feb2:ad5fno
2001:4978:1fb:6400::d22001:df0:4:800:21c:c0ff:feb2:ad5fno
2001:49aa:111:aa00::112001:df0:4:800:21c:c0ff:feb2:ad5fno
fd11:1111:1111::11112001:df0:4:800:21c:c0ff:feb2:ad5fno
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2607:ff48:aaxx::/40/1208100no
2607:ff48:aaxx::/40/1128100no
2607:ff48:aaxx::/40/1048100no
2607:ff48:aaxx::/40/968100no
2607:ff48:aaxx::/40/888100no
2607:ff48:aaxx::/40/808100no
2607:ff48:aaxx::/40/728100no
2607:ff48:aaxx::/40/648100no
2607:ff48:aaxx::/40/568100no
2607:ff48:aaxx::/40/488100no
2607:ff48:aaxx::/40/408100no
2607:ff48:2axx::/40/328100no
2607:ffc8:aaxx::/40/2417356no
2607:7f48:aaxx::/40/16UNROUTEDno

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
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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