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Session Report

Summary:
Test run at: 2023-01-10 16:49:17 GMT
Client Prefix (v4): 177.74.144.x/24
Client AS (v4): 263649
IPv4 Probes: 60
Client Prefix (v6): 2804:10c8:xx::/40
Client AS (v6): 263649
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 (177.74.144.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
177.74.144.x/24/31263649natblock
177.74.144.x/24/30263649natblock
177.74.144.x/24/29263649natblock
177.74.144.x/24/28263649natblock
177.74.144.x/24/27263649natblock
177.74.144.x/24/26263649natblock
177.74.144.x/24/25263649natblock
177.74.144.x/24/24263649natblock
177.74.145.x/24/23263649natblock
177.74.146.x/24/22263649natblock
177.74.148.x/24/21262376natblock
177.74.152.x/24/20263650natblock
177.74.128.x/24/1961588natblock
177.74.176.x/24/18263651natblock
177.74.208.x/24/1728343natblock
177.74.16.x/24/1653016natblock
177.75.144.x/24/1528146natblock
177.72.144.x/24/14272505natblock
177.78.144.x/24/1326599natblock
177.66.144.x/24/1253001natblock
177.90.144.x/24/1128571natblock
177.106.144.x/24/1053006natblock
177.10.144.x/24/9262851natblock
177.202.144.x/24/88167natblock

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
2804:10c8:xx::/40/120263649yes
2804:10c8:xx::/40/112263649yes
2804:10c8:xx::/40/104263649yes
2804:10c8:xx::/40/96263649yes
2804:10c8:xx::/40/88263649yes
2804:10c8:xx::/40/80263649yes
2804:10c8:xx::/40/72263649yes
2804:10c8:xx::/40/64263649yes
2804:10c8:xx::/40/56263649no
2804:10c8:xx::/40/48263649no
2804:10c8:xx::/40/40263649no
2804:10c8:80xx::/40/32263649no
2804:1048:xx::/40/24263628no
2804:90c8:xx::/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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