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Session Report

Summary:
Test run at: 2020-09-16 17:14:07 GMT
Client Prefix (v4): 195.245.239.x/24
Client AS (v4): 49392 (ASBAXETN)
IPv4 Probes: 75
Client Prefix (v6): 2a00:b700:xx::/40
Client AS (v6): 49392 (ASBAXETN)
IPv6 Probes: 68
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedreceived
Routable blockedreceived
Largest spoofable neighbor prefix length /24/16

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.

IPv4 Adjacent Netblock Testing:

Your host (195.245.239.x/24) can spoof 255 neighboring addresses (within your /24 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
195.245.239.x/24/3149392yes
195.245.239.x/24/3049392yes
195.245.239.x/24/2949392yes
195.245.239.x/24/2849392yes
195.245.239.x/24/2749392yes
195.245.239.x/24/2649392yes
195.245.239.x/24/2549392yes
195.245.239.x/24/2449392yes
195.245.238.x/24/2348989no
195.245.237.x/24/2225598no
195.245.235.x/24/21205934no
195.245.231.x/24/20UNROUTEDno
195.245.255.x/24/1928766no
195.245.207.x/24/18UNROUTEDno
195.245.175.x/24/179186no
195.245.111.x/24/1662240no
195.244.239.x/24/15199273no
195.247.239.x/24/1412312no
195.241.239.x/24/131136no
195.253.239.x/24/128391no
195.229.239.x/24/115384no
195.213.239.x/24/106871no
195.181.239.x/24/9206815no
195.117.239.x/24/85617no

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)

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 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:acb4yes
2001:49aa:111:aa00::112001:770:18:7:225:90ff:fe0c:acb4yes
fd11:1111:1111::11112001:770:18:7:225:90ff:fe0c:acb4yes
2001:48d0:101:501::1592001:df0:4:800:21c:c0ff:feb2:ad5fyes
2001:4978:1fb:6400::d22001:df0:4:800:21c:c0ff:feb2:ad5fno
2001:49aa:111:aa00::112001:df0:4:800:21c:c0ff:feb2:ad5fno
fd11:1111:1111::11112001:df0:4:800:21c:c0ff:feb2:ad5fno
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2a00:b700:xx::/40/12049392yes
2a00:b700:xx::/40/11249392yes
2a00:b700:xx::/40/10449392yes
2a00:b700:xx::/40/9649392yes
2a00:b700:xx::/40/8849392yes
2a00:b700:xx::/40/8049392yes
2a00:b700:xx::/40/7249392yes
2a00:b700:xx::/40/6449392yes
2a00:b700:xx::/40/5649392yes
2a00:b700:xx::/40/4849392yes
2a00:b700:xx::/40/40UNROUTEDyes
2a00:b700:80xx::/40/32UNROUTEDyes
2a00:b780:xx::/40/24UNROUTEDyes
2a00:3700:xx::/40/16UNROUTEDyes

Meaning of status in Received column:

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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