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Session Report

Summary:
Test run at: 2022-02-15 20:53:51 GMT
Client Prefix (v4): 177.125.56.x/24
Client AS (v4): 52607
IPv4 Probes: 60
Client Prefix (v6): 2804:3bfc:3xx::/40
Client AS (v6): 52607
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 /22/40
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 (177.125.56.x/24) can spoof 1023 neighboring addresses (within your /22 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
177.125.56.x/24/3152607yes
177.125.56.x/24/3052607natblock
177.125.56.x/24/2952607yes
177.125.56.x/24/2852607yes
177.125.56.x/24/2752607yes
177.125.56.x/24/2652607yes
177.125.56.x/24/2552607yes
177.125.56.x/24/2452607yes
177.125.57.x/24/2352607yes
177.125.58.x/24/2252607yes
177.125.60.x/24/21263394natblock
177.125.48.x/24/20262334natblock
177.125.40.x/24/1952606natblock
177.125.24.x/24/1852866natblock
177.125.120.x/24/1752611natblock
177.125.184.x/24/16268323natblock
177.124.56.x/24/15262318natblock
177.127.56.x/24/1428573natblock
177.121.56.x/24/1326615natblock
177.117.56.x/24/1226599natblock
177.109.56.x/24/1126615natblock
177.93.56.x/24/10262186natblock
177.61.56.x/24/926599natblock
177.253.56.x/24/827831natblock

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
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 2 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
2804:3bfc:3xx::/40/12052607yes
2804:3bfc:3xx::/40/11252607yes
2804:3bfc:3xx::/40/10452607yes
2804:3bfc:3xx::/40/9652607yes
2804:3bfc:3xx::/40/8852607yes
2804:3bfc:3xx::/40/8052607yes
2804:3bfc:3xx::/40/7252607yes
2804:3bfc:3xx::/40/6452607yes
2804:3bfc:3xx::/40/5652607yes
2804:3bfc:3xx::/40/4852607yes
2804:3bfc:3xx::/40/4052607yes
2804:3bfc:83xx::/40/32UNROUTEDno
2804:3b7c:3xx::/40/24266152no
2804:bbfc:3xx::/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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