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Session Report

Summary:
Test run at: 2023-10-24 06:10:39 GMT
Client Prefix (v4): 37.49.225.x/24
Client AS (v4): 211826 (istqserverses)
IPv4 Probes: 69
Client Prefix (v6): 2a13:adc0:xx::/40
Client AS (v6): 3920 (IMS-RTFM)
IPv6 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedreceived
Routable receivedreceived
Largest spoofable neighbor prefix length /24/16
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 (37.49.225.x/24) can spoof 255 neighboring addresses (within your /24 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
37.49.225.x/24/31211826yes
37.49.225.x/24/30211826yes
37.49.225.x/24/29211826yes
37.49.225.x/24/28211826yes
37.49.225.x/24/27211826yes
37.49.225.x/24/26211826yes
37.49.225.x/24/25211826yes
37.49.225.x/24/24211826yes
37.49.224.x/24/23213371no
37.49.227.x/24/22211238no
37.49.229.x/24/21213371no
37.49.233.x/24/20UNROUTEDno
37.49.241.x/24/1950572no
37.49.193.x/24/1821127no
37.49.161.x/24/1712688no
37.49.97.x/24/163209no
37.48.225.x/24/15206347no
37.51.225.x/24/143320no
37.53.225.x/24/136849no
37.57.225.x/24/1213188no
37.33.225.x/24/1116086no
37.17.225.x/24/1048324no
37.113.225.x/24/951035no
37.177.225.x/24/830722no

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 able to spoof routable, non-adjacent source addresses through the first 5 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::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
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2a13:adc0:xx::/40/1203920yes
2a13:adc0:xx::/40/1123920yes
2a13:adc0:xx::/40/1043920yes
2a13:adc0:xx::/40/963920yes
2a13:adc0:xx::/40/883920yes
2a13:adc0:xx::/40/803920yes
2a13:adc0:xx::/40/723920yes
2a13:adc0:xx::/40/643920yes
2a13:adc0:xx::/40/563920yes
2a13:adc0:xx::/40/483920yes
2a13:adc0:xx::/40/40UNROUTEDyes
2a13:adc0:80xx::/40/32UNROUTEDyes
2a13:ad40:xx::/40/24UNROUTEDyes
2a13:2dc0:xx::/40/16198231yes

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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