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Session Report

Summary:
Test run at: 2023-03-06 11:26:59 GMT
Client Prefix (v4): 182.55.108.x/24
Client AS (v4): 55430 (STARHUB-NGNBN)
IPv4 Probes: 60
Client Prefix (v6): 2404:e801:20xx::/40
Client AS (v6): 55430 (STARHUB-NGNBN)
IPv6 Probes: 52
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 none/64
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 (182.55.108.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
182.55.108.x/24/3155430natblock
182.55.108.x/24/3055430natblock
182.55.108.x/24/2955430natblock
182.55.108.x/24/2855430natblock
182.55.108.x/24/2755430natblock
182.55.108.x/24/2655430natblock
182.55.108.x/24/2555430natblock
182.55.108.x/24/2455430natblock
182.55.109.x/24/2355430natblock
182.55.110.x/24/2255430natblock
182.55.104.x/24/2155430natblock
182.55.100.x/24/2055430natblock
182.55.124.x/24/1955430natblock
182.55.76.x/24/1855430natblock
182.55.44.x/24/1755430natblock
182.55.236.x/24/1655430natblock
182.54.108.x/24/154837natblock
182.53.108.x/24/1423969natblock
182.51.108.x/24/13UNROUTEDnatblock
182.63.108.x/24/124818natblock
182.39.108.x/24/114134natblock
182.23.108.x/24/104800natblock
182.119.108.x/24/94837natblock
182.183.108.x/24/817557natblock

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 able to spoof routable, non-adjacent source addresses through the first 1 IP hop(s).
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::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::1592001:770:1c:7:225:90ff:fe0c:acb4no
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
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2404:e801:20xx::/40/12055430yes
2404:e801:20xx::/40/11255430yes
2404:e801:20xx::/40/10455430yes
2404:e801:20xx::/40/9655430yes
2404:e801:20xx::/40/8855430yes
2404:e801:20xx::/40/8055430yes
2404:e801:20xx::/40/7255430yes
2404:e801:20xx::/40/6455430yes
2404:e801:20xx::/40/5655430no
2404:e801:20xx::/40/4855430no
2404:e801:20xx::/40/4055430no
2404:e801:a0xx::/40/3255430no
2404:e881:20xx::/40/24UNROUTEDno
2404:6801:20xx::/40/16UNROUTEDno

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)
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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