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Session Report

Summary:
Test run at: 2021-12-04 15:27:06 GMT
Client Prefix (v4): 138.36.206.x/24
Client AS (v4): 28343
IPv4 Probes: 66
Client Prefix (v6): 2804:30c:bxx::/40
Client AS (v6): 28343
IPv6 Probes: 56
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/56
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 (138.36.206.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
138.36.206.x/24/3128343natblock
138.36.206.x/24/3028343natblock
138.36.206.x/24/2928343natblock
138.36.206.x/24/2828343natblock
138.36.206.x/24/2728343natblock
138.36.206.x/24/2628343natblock
138.36.206.x/24/2528343natblock
138.36.206.x/24/2428343natblock
138.36.207.x/24/2328343natblock
138.36.204.x/24/2228343natblock
138.36.202.x/24/21264591natblock
138.36.198.x/24/20264586natblock
138.36.222.x/24/19265704natblock
138.36.238.x/24/1827823natblock
138.36.142.x/24/1728257natblock
138.36.78.x/24/16262159natblock
138.37.206.x/24/15198864natblock
138.38.206.x/24/14786natblock
138.32.206.x/24/13UNROUTEDnatblock
138.44.206.x/24/127575natblock
138.52.206.x/24/11UNROUTEDnatblock
138.4.206.x/24/10766natblock
138.100.206.x/24/9766natblock
138.164.206.x/24/8721natblock

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::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
2804:30c:bxx::/40/12028343yes
2804:30c:bxx::/40/11228343yes
2804:30c:bxx::/40/10428343yes
2804:30c:bxx::/40/9628343yes
2804:30c:bxx::/40/8828343yes
2804:30c:bxx::/40/8028343yes
2804:30c:bxx::/40/7228343yes
2804:30c:bxx::/40/6428343yes
2804:30c:bxx::/40/5628343yes
2804:30c:bxx::/40/4828343no
2804:30c:bxx::/40/4028343no
2804:30c:8bxx::/40/3228343no
2804:38c:bxx::/40/24UNROUTEDno
2804:830c:bxx::/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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