Programs that map out a network to figure out which computers and services are available to be exploited.

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4
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5answers
891 views

How to bypass Nmap blockage?

I rent a server, and my provider seems to be blocking nmap. Is there any other tools I could use to test my home network from the outside? Also, does blocking nmap on a network provide any security? ...
1
vote
2answers
383 views

Spike in TCP port 5904 activity - what for?

There is an 'Internet Weather Report' on the Threat!Traq video blog by AT&T security researchers. In the March 14th broadcast, at around 31 minutes in, they mention an increase of scanning ...
5
votes
5answers
905 views

How can I portscan large subnets?

I need to scan several /16 and a /8 subnet to see what hosts are up and additionally, if any services are running on a select few ports. I've tried various tools such as angry IP scanner, Nmap, ...
-1
votes
3answers
1k views

Why doesn't Advanced IP Scanner show machine name? [closed]

I am using Advanced IP scanner to view all the machines at my home. However, it just shows me only one machine but not the other. However, I am able to ping to the other machine. The network discovery ...
1
vote
0answers
142 views

Which are appropiate tests to perform during an internal/LAN security audit? [closed]

In the internal network we know that controls are less strict than externally but in the other hand we know that lots of attacks come from the internal segment (unhappy workers, etc.) Which are ...
2
votes
2answers
300 views

Suspect Exchange Server appears to be hacked. How to determine if it was a false positive?

Our security vendor detected that our client's CAS server was doing a nessus scan in the internal network. It's not uncommon for this vendor to issue a false positive, but I'm looking for general ...
3
votes
5answers
203 views

How to introduce delay in scanning tools that do not implement delay without touching source code?

Usually scanning tools implement a switch in order to delay requests and not flood the target. Sometimes there tools that do not implement this delay option. Is there a way to delay packets from ...
1
vote
1answer
208 views

Packet-filtering firewall evasion (Scanning)

Context I'm very familiar with different applications of scanning tools (. . . and you can use -mtu to specify the size of the fragments in nmap . . .) but every piece of information I read about ...
2
votes
0answers
123 views

Determine deployed 802.3x encryption/authentication protocols? Or, why can't I access Eth0?

Is there any means to identify deployed 802.3x authentication protocols on a wired interface (eth0) under Windows 7 (CLI), or from wlan0 on a *NIX based system? The scenario is as follows: I am a ...
1
vote
1answer
133 views

how to protect from Network scanner on android?

How can I block and detect network scanners on android platforms to stop scanning vlan of my hot spot. My question is: which scanners they use? how can i detect such scanners? Can i protect ...
-2
votes
1answer
749 views

Nessus does not detect sql injection with “Web App Tests” [closed]

In my website I have an sql injection vulnerability. But when I scan my website with Nessus under "Web app tests" there is no result on sql injection. Why is this? What should I do to make this ...
3
votes
3answers
628 views

Online security check via command line

My scenario is that I have a VPS with Apache (mostly for development of my own projects) accessed via SSH; and I time to time I would like to do a quick check just to be sure that there's no potential ...
0
votes
2answers
2k views

Port scanning legal or not? [closed]

Is port scanning legal ? In which countries ? my option : I think port scanning is like a short-walk( or a long-walk) in the neighbourhood, just curious about neighbours are up to. I think that ...
4
votes
4answers
1k views

How can I scan open ports without being traced back

I would like to scan open ports of a server. But as far as I know, when I try to scan the open ports with something like nmap in shell they would be able to trace me. Is there a way to secure this ...
3
votes
1answer
546 views

What is known about the sirefef/zeroaccess malware/botnet?

There appears to be an increase in p2p communication among botnets that has been attributed to the sirefef/zeroaccess malware botnet. What is known on this particular threat?
0
votes
0answers
61 views

Can you port-scan a LAN, from outside the LAN? [duplicate]

Possible Duplicate: Scanning A Subnet Externaly Is it possible to scan ports on machines in a LAN, from outside that LAN? For example, I've got machines in my LAN network and want to check ...
4
votes
4answers
1k views

what scanning tools are unlikely to set off network IDS?

What network scanning tools have a stealth option to avoid detection?
3
votes
2answers
740 views

Tools/methods helping to determine application/protocol serving specific port

I do blackbox testing of the server and figured out that there is a bunch of listening ports. I need to determine what services/protocols those ports are used for. What I've tried so far is to use ...
3
votes
1answer
229 views

tcp seq number prediction

While testing a system, nmap told me that the tcp seq number prediction is really low, (trivial joke). There is only one system in the whole range that gives me that answer. Some papers, e.g. a ...
9
votes
4answers
2k views

nmap showing unknown IPs on private network

I had a go at scanning my home network with nmap, doing a 192.168.0.0/16 netscan. To my surprise, the results shown multiple live devices not only on 192.168.1.x (where all our known devices are) but ...
4
votes
4answers
378 views

Malware that uses http as a covert channel

I'm working on a http traffic analyzer and I need a collection of malware, which uses http as a way to get commands and respond, to analyze their network behaviour. Is there any database of malware, ...
0
votes
2answers
3k views

Questionable request to /user/soapCaller.bs

My webserver logs revealed a request to /user/soapCaller.bs from 220.226.188.32, which maps to Mumbai, India. The HTTP user agent is called 'Morpheus * Scanner'. My server returned a 404 error. ...
2
votes
2answers
3k views

Using Cain and Abel to capture traffic of machine in the same network

I have installed Cain and Able in machine A, which is connected to another machine B via a LAN. Now I want to analyze all the traffic of machine B. Is this possible by installing Cain and Abel on ...
3
votes
2answers
5k views

Could Nmap scan switches/routers

Nmap can scan and sometimes successfully detect the running OS in the remote host. However, can nmap scan routers and switches? Most of them use an embedded system.
2
votes
1answer
118 views

Network abnormally slow during night hours

My network recently the last week as become abnormally slow around 11 pm. Very slow buffering youtube videos during all hours. Ive recently purchased the new router about two months ago but not ...
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votes
3answers
3k views

Which tool (apart from nmap) can I use to scan a range of IPv6 addresses? [closed]

When I try to use nmap: # nmap -sP -6 FE80::1-234 [...] Failed to resolve given IPv6 hostname/IP: FE80::1-234. Note that you can't use '/mask' or '[1-4,7,100-]' style ranges for IPv6.[...] What ...
3
votes
1answer
815 views

How does OS detection work in practice?

I was wondering how OS detection really works on Nmap. I know it is about to send different tcp probes to see how the target machine responds to them. But what kind of probes would distinguish a ...
0
votes
3answers
3k views

Unknown MAC address connected to router

I found an unknown MAC address connected to my home router. How would I figure out what OS the IP or MAC address is running?
1
vote
3answers
821 views

How to find the OS of the target machine

I am new to this field. Currently I am using Linux OS and my question is how can I find the OS of another machine to which I do not have a direct access. I am interested in any possibilities which ...
7
votes
2answers
262 views

What should a Vulnerability Management System scan on a large scale

On a large scale (~1500 workstations, ~100 servers, ~50 network routers and switches, etc), what should a vulnerability management system be scanning? Should it scan everything, or just samples? I ...
6
votes
2answers
3k views

Scanning my network with NMAP

Each computer is assigned one ip address on my network, and my ISP supplies one IP for my network. If I try to scan the ip supplied by my ISP what I got is the OS running on the router, running on the ...
-1
votes
1answer
3k views

How to know all the Connected devices to my Access Point including Phones [closed]

I need to list all the connected devices in my AP wireless network including mobile phones, also if it possible to know more information about each device, I am using Windows 7 and my access point is ...
0
votes
3answers
377 views

How to rewrite config files using SNMP?

I scanned a router and found that the community string is public. The write access is also enabled. Now I want to change the configuration of the router. Can anybody tell me about tools and tutorials ...
8
votes
2answers
16k views

nmap scan shows ports are filtered but nessus scan shows no result

I'm performing an port scanning on a range of IPs on our remote site. I tried running nmap scan on that IP range and some of the IP result are shown as filtered When I perform a nessus scan on the ...
2
votes
1answer
3k views

Detected Port Scanning Attack in ESET Smart Security

I receive a number of notifications from ESET Smart Security about Port Scanning attack. But I'm behind a router. But as far as I know, computers behind a router is not accessible from others (Please ...
2
votes
2answers
218 views

Scan Novell NetWare backend with Windows servers and clients

Could anyone provide some insight on performing an internal vulnerability assessment regarding Novell NetWare as the backend with client workstations and servers running various versions of Windows? ...
3
votes
2answers
522 views

Is it possible to trace fellow nodes on a DSL internet connection?

I'm not in my college campus right now. In campus we had private LAN. There my computer was directly connected to a gateway. Using subnet masks I used to find out fellow nodes on my subnet. There were ...
3
votes
1answer
476 views

Good software for IT Infrastructure discovery

Currently, I have an industry attachment project in which my group need to suggest a good tool for Network discovery to a IT service company. The company wants to automate the stage in which they have ...
3
votes
4answers
283 views

What does a switched network protect us from? What does it not protect us from?

There seems to be some misconceptions regarding what a switched network will protect us from, and what technologies/precautions a secure environment requires when segmenting trusted users from hostile ...
3
votes
1answer
2k views

Scan for mobile phones?

I'd like to measure queuing time, similar to what they're doing in Finland. Instead of detecting bluetooth (which is disabled in most phones) I thought of detecting EDGE/3G. I'd like to log the ...
4
votes
4answers
999 views

Do these ports mean anything?

I'm diving to the world of penetration testing and I decided to port scan my server. My website is completely managed by a friend of mine but he lacks any knowledge of security. PORT STATE ...
14
votes
6answers
3k views

Are some uncommon TCP ports scanned less than others?

Ignoring the top 5-10% of port numbers for common services that are the commonly targeted by port scanners (i.e. ports 22-ssh, 23-telnet, 80-http, 139-smb/cifs, 443-https, 3389-rdp, etc.), are the ...
6
votes
2answers
2k views

Initial steps of network mapping

In light of recent security breaches hitting the news, it's been all hands on deck at my work as far as security. I'm trying to pen test our network. I have a very basic question. My Question You ...
3
votes
7answers
902 views

Determining network topology from the outside

To what extent can an attacker generate a map of a network from outside of it? Are network scanning tools such as nmap the only means to do this? Otherwise what other types of tools or techniques ...
9
votes
2answers
2k views

Bypassing a reverse proxy/NAT

Reverse proxies and NAT would seem to obscure a network behind such technologies to the point where it would be hard if not impossible to identify ports open and services running. Given that many ...
1
vote
2answers
992 views

TCP / UDP port monitoring programs for mac?

Does anyone know of a free and effective port monitor for mac? Also, can a laymen, in relatively short order, learn to use such software to detect and thus prevent unauthorized remote access/control ...
7
votes
4answers
464 views

What kind of IT security applications do you guys run on your laptop/desktop?

I know a lot of people run different security applications on their laptops/desktops. I use Little Snitch on my Macbook Pro. I like to know where my applications are sending data and where I am ...
7
votes
4answers
5k views

How to detect hosts running in virtual machines with nmap?

I have to determine if a given subnet has virtual hosts. Are there any ideas about what switches to use?
4
votes
3answers
247 views

packet sniffers and segments

Just curious why most packet sniffers are limited to their segment? is it the nature of a gateway to block the attempt outside a subnet? cheers
13
votes
3answers
3k views

Nessus vs third-party scans

As part of our PCI-DSS compliance process we get scans done by a third party. Based on the form and wording of the output, it's pretty clear they're using Nessus for most of their heavy lifting. Same ...