Session Report
Summary:
Test run at: 2017-08-13 15:10:46 GMT
Client Prefix (v4): 185.13.36.x/24
Client AS (v4): 197922 (FIRSTHEBERG)
IPv4 Probes: 120
Outbound spoofing summary (from the client to our server) |
Source address type |
IPv4 |
Private -
RFC1918 |
✔ | blocked |
Routable |
received |
Largest spoofable neighbor prefix length |
/8 |
Spoof status key |
---|
received | Spoofed packet was received. | ✔ | Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it. |
rewritten | Spoofed packet was received, but the source address was changed en route. |
blocked | Spoofed packet was not received, but unspoofed packet was. |
unknown | Neither spoofed nor unspoofed packet was received. |
IPv4 Adjacent Netblock Testing:
Your host (185.13.36.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)
Spoofed source address (anon) | Prefix Length | ASN of spoofed source address | Received |
185.13.36.x/24 | /31 | 197922 | yes |
185.13.36.x/24 | /30 | 197922 | yes |
185.13.36.x/24 | /29 | 197922 | yes |
185.13.36.x/24 | /28 | 197922 | yes |
185.13.36.x/24 | /27 | 197922 | yes |
185.13.36.x/24 | /26 | 197922 | yes |
185.13.36.x/24 | /25 | 197922 | yes |
185.13.36.x/24 | /24 | 197922 | yes |
185.13.37.x/24 | /23 | 197922 | yes |
185.13.38.x/24 | /22 | 197922 | yes |
185.13.32.x/24 | /21 | 32181 | yes |
185.13.44.x/24 | /20 | 42291 | yes |
185.13.52.x/24 | /19 | 2107 | yes |
185.13.4.x/24 | /18 | 42331 | yes |
185.13.100.x/24 | /17 | 196766 | yes |
185.13.164.x/24 | /16 | 5602 | yes |
185.12.36.x/24 | /15 | UNROUTED | no |
185.15.36.x/24 | /14 | 203451 | yes |
185.9.36.x/24 | /13 | 199608 | yes |
185.5.36.x/24 | /12 | 30938 | yes |
185.29.36.x/24 | /11 | 34783 | yes |
185.45.36.x/24 | /10 | 199791 | yes |
185.77.36.x/24 | /9 | 6762 | yes |
185.141.36.x/24 | /8 | 48356 | yes |
Meaning of status in Received column:
no | Packets spoofed from adjacent netblock were not received, probably due to blocking |
yes | Packets spoofed from adjacent netblock were received |
yes | Packets spoofed from adjacent netblock were received (but that netblock is within the source AS) |
IPv4 Outbound Filtering Depth:
The tracefilter test found your host
able to spoof routable, non-adjacent source addresses through the
first 11 IP hop(s).
Summary:
The results from all tests are aggregated to produce a summary
"State of IP Spoofing" report.
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