summaryrefslogtreecommitdiff
path: root/other/b-scan/PROBLEMS
diff options
context:
space:
mode:
authorRoot THC2026-02-24 12:42:47 +0000
committerRoot THC2026-02-24 12:42:47 +0000
commitc9cbeced5b3f2bdd7407e29c0811e65954132540 (patch)
treeaefc355416b561111819de159ccbd86c3004cf88 /other/b-scan/PROBLEMS
parent073fe4bf9fca6bf40cef2886d75df832ef4b6fca (diff)
initial
Diffstat (limited to 'other/b-scan/PROBLEMS')
-rw-r--r--other/b-scan/PROBLEMS58
1 files changed, 58 insertions, 0 deletions
diff --git a/other/b-scan/PROBLEMS b/other/b-scan/PROBLEMS
new file mode 100644
index 0000000..24db576
--- /dev/null
+++ b/other/b-scan/PROBLEMS
@@ -0,0 +1,58 @@
1 No one believes an hypothesis except its
2 originator, but everyone believes an
3 experiment except the experimenter.
4 J.Anon, 1823
5
6
7[0] General
8
9 As larger the target network (10.0.0.0/8 is large) is as
10 faster you can scan (-X -l 5000+).
11
12 Use 'spreadmode' (-X) whereever possible.
13
14 Use an unused ip from your local network for spoofing.
15 (bscan comes with its own arp-daemon to handle arp-requests
16 to the spoofed ip)
17
18
19[1] Scanning your own LOCAL network:
20
21 If you get packet loss and missing scan results while
22 scanning your local network, please lower the scan rate.
23 Your host is unable to resolve 1000 arp's per second
24 and therefor drops packets.
25 Try some smaller values at about 50-100 hosts/second.
26
27
28[2] Why is 'spreadmode' so much better ?
29
30 First: its non-linear and so more 'stealthy'.
31 Default timeout for most IDS is around 4 mins.
32 If you scan linear [not spreadmode] you hit
33 the target network several thousand times the second.
34
35 Second: The last router has to resolve all mac's for
36 the hosts on the target network.
37 There is no router that can resolve 1000+ mac's per second.
38 'Spreadmode' tries to guess the 'router distance' and
39 send packets to different routers [non-linear].
40 It tries to achieve the maximum time-distance between
41 two packets hit the same router.
42 It's up to the reader to proof that a random scan
43 is inadequate in this situation.
44
45
46[3] Does bscan work on other media than ethernet ?
47
48 Short answer: NO!.
49 Long answer: I'll add support for other media's later.
50
51
52[4] Does it work through NAT ?
53
54 Yes. But be aware that most NAT-systems are unable to keep the
55 state of 100.000 seconds. Try reducing the scan-speed (-l 100?)
56 for instance.
57
58