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Session Report

Summary:
Test run at: 2020-07-17 18:16:15 GMT
Client Prefix (v4): 177.107.35.x/24
Client AS (v4): 28329
IPv4 Probes: 75
Client Prefix (v6): 2804:51f0:80xx::/40
Client AS (v6): 262627
IPv6 Probes: 68
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA rewrittenreceived
Routable rewrittenreceived
Largest spoofable neighbor prefix length none/16

Meaning of result status in column:

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.

Warnings:

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 (177.107.35.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
177.107.35.x/24/3128329rewritten
177.107.35.x/24/3028329rewritten
177.107.35.x/24/2928329rewritten
177.107.35.x/24/2828329rewritten
177.107.35.x/24/2728329rewritten
177.107.35.x/24/2628329rewritten
177.107.35.x/24/2528329rewritten
177.107.35.x/24/2428329rewritten
177.107.34.x/24/2328329rewritten
177.107.33.x/24/2228329rewritten
177.107.39.x/24/2128329rewritten
177.107.43.x/24/2028329rewritten
177.107.51.x/24/1928329rewritten
177.107.3.x/24/18262730rewritten
177.107.99.x/24/17262323natblock
177.107.163.x/24/1653137natblock
177.106.35.x/24/1553006natblock
177.105.35.x/24/1452853natblock
177.111.35.x/24/1326615natblock
177.99.35.x/24/1218881natblock
177.123.35.x/24/1126615rewritten
177.75.35.x/24/10262808rewritten
177.43.35.x/24/918881rewritten
177.235.35.x/24/828573rewritten

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.
rewrittenThe source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.

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::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::1592001:770:18:7:225:90ff:fe0c:acb4yes
2001:4978:1fb:6400::d22001:770:18:7:225:90ff:fe0c:acb4no
2001:49aa:111:aa00::112001:770:18:7:225:90ff:fe0c:acb4no
fd11:1111:1111::11112001:770:18:7:225:90ff:fe0c:acb4no
2001:48d0:101:501::1592001:df0:4:800:21c:c0ff:feb2:ad5fyes
2001:4978:1fb:6400::d22001:df0:4:800:21c:c0ff:feb2:ad5fyes
2001:49aa:111:aa00::112001:df0:4:800:21c:c0ff:feb2:ad5fyes
fd11:1111:1111::11112001:df0:4:800:21c:c0ff:feb2:ad5fyes
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2804:51f0:80xx::/40/120262627yes
2804:51f0:80xx::/40/112262627yes
2804:51f0:80xx::/40/104262627yes
2804:51f0:80xx::/40/96262627yes
2804:51f0:80xx::/40/88262627yes
2804:51f0:80xx::/40/80262627yes
2804:51f0:80xx::/40/72262627yes
2804:51f0:80xx::/40/64262627yes
2804:51f0:80xx::/40/56262627no
2804:51f0:80xx::/40/48262627no
2804:51f0:80xx::/40/40262627no
2804:51f0:xx::/40/32262627no
2804:5170:80xx::/40/24UNROUTEDyes
2804:d1f0:80xx::/40/16UNROUTEDyes

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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