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Session Report

Summary:
Test run at: 2021-04-17 19:41:37 GMT
Client Prefix (v4): 31.133.1.x/24
Client AS (v4): 51290 (HOSTEAM-AS)
IPv4 Probes: 66
Client Prefix (v6): 2001:67c:20xx::/40
Client AS (v6): 51290 (HOSTEAM-AS)
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedreceived
Routable blockedreceived
Largest spoofable neighbor prefix length /23/16

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 (31.133.1.x/24) can spoof 511 neighboring addresses (within your /23 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
31.133.1.x/24/3151290yes
31.133.1.x/24/3051290yes
31.133.1.x/24/2951290yes
31.133.1.x/24/2851290yes
31.133.1.x/24/2751290yes
31.133.1.x/24/2651290yes
31.133.1.x/24/2551290yes
31.133.1.x/24/2451290yes
31.133.0.x/24/2351290yes
31.133.3.x/24/2251290no
31.133.5.x/24/2151290no
31.133.9.x/24/2056624no
31.133.17.x/24/1956646no
31.133.33.x/24/1847694no
31.133.65.x/24/1748882no
31.133.129.x/24/16UNROUTEDno
31.132.1.x/24/1542831no
31.135.1.x/24/149009no
31.129.1.x/24/1341789no
31.141.1.x/24/12UNROUTEDno
31.149.1.x/24/111136no
31.165.1.x/24/106730no
31.197.1.x/24/93269no
31.5.1.x/24/86830no

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.
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
2001:48d0:101:501::1592001:48d0:101:501::242yes
2001:4978:1fb:6400::d22001:48d0:101:501::242yes
2001:49aa:111:aa00::112001:48d0:101:501::242yes
fd11:1111:1111::11112001:48d0:101:501::242yes
2001:48d0:101:501::1592001:48d0:101:501::247yes
2001:4978:1fb:6400::d22001:48d0:101:501::247yes
2001:49aa:111:aa00::112001:48d0:101:501::247yes
fd11:1111:1111::11112001:48d0:101:501::247yes
2001:48d0:101:501::1592001:610:510:115:192:42:115:98yes
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:45a6yes
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::1592001:770:1c:7:225:90ff:fe0c:acb4yes
2001:4978:1fb:6400::d22001:770:1c:7:225:90ff:fe0c:acb4yes
2001:49aa:111:aa00::112001:770:1c:7:225:90ff:fe0c:acb4yes
fd11:1111:1111::11112001:770:1c:7:225:90ff:fe0c:acb4yes
2001:48d0:101:501::1592001:df0:4:800:21c:c0ff:feb2:ad5fyes
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
2001:67c:20xx::/40/12051290yes
2001:67c:20xx::/40/11251290yes
2001:67c:20xx::/40/10451290yes
2001:67c:20xx::/40/9651290yes
2001:67c:20xx::/40/8851290yes
2001:67c:20xx::/40/8051290yes
2001:67c:20xx::/40/7251290yes
2001:67c:20xx::/40/6451290yes
2001:67c:20xx::/40/5651290yes
2001:67c:20xx::/40/4851290yes
2001:67c:20xx::/40/408767yes
2001:67c:a0xx::/40/32UNROUTEDyes
2001:6fc:20xx::/40/24UNROUTEDyes
2001:867c:20xx::/40/161221yes

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received
yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
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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