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Session Report

Summary:
Test run at: 2022-06-30 18:37:48 GMT
Client Prefix (v4): 179.127.72.x/24
Client AS (v4): 263283
IPv4 Probes: 60
Client Prefix (v6): 2804:1658:80xx::/40
Client AS (v6): 263283
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA rewrittenblocked
Routable receivedreceived
Largest spoofable neighbor prefix length /8/24
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.

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 (179.127.72.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
179.127.72.x/24/31263283yes
179.127.72.x/24/30263283yes
179.127.72.x/24/29263283yes
179.127.72.x/24/28263283yes
179.127.72.x/24/27263283yes
179.127.72.x/24/26263283yes
179.127.72.x/24/25263283yes
179.127.72.x/24/24263283yes
179.127.73.x/24/23263283yes
179.127.74.x/24/22263283yes
179.127.76.x/24/21263283yes
179.127.64.x/24/2028287yes
179.127.88.x/24/1928292yes
179.127.104.x/24/18262469yes
179.127.8.x/24/1728209yes
179.127.200.x/24/16263642yes
179.126.72.x/24/1553006yes
179.125.72.x/24/14262988yes
179.123.72.x/24/1326615yes
179.119.72.x/24/1210429yes
179.111.72.x/24/1127699yes
179.95.72.x/24/1018881yes
179.63.72.x/24/9UNROUTEDnatblock
179.255.72.x/24/88167yes

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received
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 10 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::242yes
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::247yes
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::1592001:610:510:115:192:42:115:98yes
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::1592001:770:1c:7:225:90ff:fe0c:acb4yes
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
2804:1658:80xx::/40/120263283yes
2804:1658:80xx::/40/112263283yes
2804:1658:80xx::/40/104263283yes
2804:1658:80xx::/40/96263283yes
2804:1658:80xx::/40/88263283yes
2804:1658:80xx::/40/80263283yes
2804:1658:80xx::/40/72263283yes
2804:1658:80xx::/40/64263283yes
2804:1658:80xx::/40/56263283yes
2804:1658:80xx::/40/48263283yes
2804:1658:80xx::/40/40263283yes
2804:1658:xx::/40/32263283yes
2804:16d8:80xx::/40/24262729yes
2804:9658:80xx::/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
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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