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Session Report

Summary:
Test run at: 2021-05-30 01:37:46 GMT
Client Prefix (v4): 45.170.104.x/24
Client AS (v4): 263750
IPv4 Probes: 66
Client Prefix (v6): 2803:a040:1xx::/40
Client AS (v6): 263750
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedblocked
Routable blockedreceived
Largest spoofable neighbor prefix length none/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 (45.170.104.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
45.170.104.x/24/31263750natblock
45.170.104.x/24/30263750natblock
45.170.104.x/24/29263750natblock
45.170.104.x/24/28263750natblock
45.170.104.x/24/27263750natblock
45.170.104.x/24/26263750natblock
45.170.104.x/24/25263750natblock
45.170.104.x/24/24263750natblock
45.170.105.x/24/23263750natblock
45.170.106.x/24/22263750natblock
45.170.108.x/24/21UNROUTEDnatblock
45.170.96.x/24/20268157natblock
45.170.120.x/24/19268154natblock
45.170.72.x/24/18268153natblock
45.170.40.x/24/1752465natblock
45.170.232.x/24/16267768natblock
45.171.104.x/24/15268709natblock
45.168.104.x/24/14UNROUTEDnatblock
45.174.104.x/24/13UNROUTEDnatblock
45.162.104.x/24/12268516natblock
45.186.104.x/24/11265684natblock
45.138.104.x/24/10208414natblock
45.234.104.x/24/9267357natblock
45.42.104.x/24/811814natblock

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 probes:
Spoofed source addressDestinationReceived
2001:48d0:101:501::1592001:48d0:101:501::242yes
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::247yes
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::1592001:610:510:115:192:42:115:98yes
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:acb4no
2001:49aa:111:aa00::112001:770:1c:7:225:90ff:fe0c:acb4no
fd11:1111:1111::11112001:770:1c:7:225:90ff:fe0c:acb4no
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
2803:a040:1xx::/40/120263750yes
2803:a040:1xx::/40/112263750yes
2803:a040:1xx::/40/104263750yes
2803:a040:1xx::/40/96263750yes
2803:a040:1xx::/40/88263750yes
2803:a040:1xx::/40/80263750yes
2803:a040:1xx::/40/72263750yes
2803:a040:1xx::/40/64263750yes
2803:a040:1xx::/40/56263750yes
2803:a040:1xx::/40/48263750yes
2803:a040:1xx::/40/40263750yes
2803:a040:81xx::/40/32263750yes
2803:a0c0:1xx::/40/24UNROUTEDno
2803:2040:1xx::/40/1628050yes

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
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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