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Session Report

Summary:
Test run at: 2022-02-24 17:17:33 GMT
Client Prefix (v4): 92.206.193.x/24
Client AS (v4): 16202 (TELECOLUMBUS-AS)
IPv4 Probes: 60
Client Prefix (v6): 2a02:2454:92xx::/40
Client AS (v6): 16202 (TELECOLUMBUS-AS)
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 (92.206.193.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
92.206.193.x/24/3116202natblock
92.206.193.x/24/3016202natblock
92.206.193.x/24/2916202natblock
92.206.193.x/24/2816202natblock
92.206.193.x/24/2716202natblock
92.206.193.x/24/2616202natblock
92.206.193.x/24/2516202natblock
92.206.193.x/24/2416202natblock
92.206.192.x/24/2316202natblock
92.206.195.x/24/2216202natblock
92.206.197.x/24/2116202natblock
92.206.201.x/24/2016202natblock
92.206.209.x/24/1916202natblock
92.206.225.x/24/1816202natblock
92.206.129.x/24/1716202natblock
92.206.65.x/24/1616202natblock
92.207.193.x/24/1531655natblock
92.204.193.x/24/1434289natblock
92.202.193.x/24/132527natblock
92.198.193.x/24/1220676natblock
92.222.193.x/24/1116276natblock
92.238.193.x/24/105089natblock
92.142.193.x/24/93215natblock
92.78.193.x/24/83209natblock

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
2a02:2454:92xx::/40/12016202yes
2a02:2454:92xx::/40/11216202yes
2a02:2454:92xx::/40/10416202yes
2a02:2454:92xx::/40/9616202yes
2a02:2454:92xx::/40/8816202yes
2a02:2454:92xx::/40/8016202yes
2a02:2454:92xx::/40/7216202yes
2a02:2454:92xx::/40/6416202yes
2a02:2454:92xx::/40/5616202yes
2a02:2454:92xx::/40/4816202no
2a02:2454:92xx::/40/4016202no
2a02:2454:12xx::/40/3220880no
2a02:24d4:92xx::/40/24UNROUTEDno
2a02:a454:92xx::/40/161136no

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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