Session Report
Summary:
Test run at: 2018-11-06 12:37:36 GMT
Client Prefix (v4): 91.229.20.x/24
Client AS (v4): 197922 (FIRSTHEBERG)
IPv4 Probes: 124
Outbound spoofing summary (from the client to our server) |
Source address type |
IPv4 |
Private -
RFC1918 |
✔ | blocked |
Routable |
received |
Largest spoofable neighbor prefix length |
/24 |
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 (91.229.20.x/24) can spoof 255 neighboring addresses (within your /24 prefix)
Spoofed source address (anon) | Prefix Length | ASN of spoofed source address | Received |
91.229.20.x/24 | /31 | 197922 | yes |
91.229.20.x/24 | /30 | 197922 | yes |
91.229.20.x/24 | /29 | 197922 | yes |
91.229.20.x/24 | /28 | 197922 | yes |
91.229.20.x/24 | /27 | 197922 | yes |
91.229.20.x/24 | /26 | 197922 | yes |
91.229.20.x/24 | /25 | 197922 | yes |
91.229.20.x/24 | /24 | 197922 | yes |
91.229.21.x/24 | /23 | 2119 | no |
91.229.22.x/24 | /22 | 198704 | no |
91.229.16.x/24 | /21 | UNROUTED | no |
91.229.28.x/24 | /20 | 56926 | no |
91.229.4.x/24 | /19 | UNROUTED | no |
91.229.52.x/24 | /18 | 50643 | no |
91.229.84.x/24 | /17 | 56949 | no |
91.229.148.x/24 | /16 | UNROUTED | no |
91.228.20.x/24 | /15 | 56816 | no |
91.231.20.x/24 | /14 | 57890 | no |
91.225.20.x/24 | /13 | 52222 | no |
91.237.20.x/24 | /12 | UNROUTED | no |
91.245.20.x/24 | /11 | UNROUTED | no |
91.197.20.x/24 | /10 | 57251 | no |
91.165.20.x/24 | /9 | 12322 | no |
91.101.20.x/24 | /8 | 15516 | no |
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 (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 2 IP hop(s).
Summary:
The results from all tests are aggregated to produce a summary
"State of IP Spoofing" report.
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