3
votes
2answers
72 views

Public facing computers in a Media Lab

I've just taken over administering a lab of Apple computers on a university campus. We have about 15 computers and I've discovered that they all have public IPs and domain names. Even our printer is ...
2
votes
3answers
91 views

How does Network Discovery OFF protect my computer?

Yes, it seems that the computer will not respond to pinging. But any computer with a packet sniffer will be able to see my ip once I send any packet to the router. So basically, if I'm surfing the ...
0
votes
0answers
18 views

How can I get a list of unsigned plugins in openvas?

How can I get a list of unsigned plugins in openvas? Are those plugins safe for use? When I run the scan on a test machine with nasl_no_signature_check = no, I don't get any results(not even any ...
1
vote
3answers
204 views

What exactly does one get from a Nmap Scan?

I know nmap is a port scanner and its output shows all the open ports, the services running on those ports, the underlying OS and technology, etc. What should one take from this result in easiest ...
2
votes
1answer
182 views

Can I perform WEP cracking from several laptops against 1 AP

I have successfully being able to perform WEP key cracking attack using aircrack tool. I want to allow my students to test this in a lab environment. They will be working fro their own laptops against ...
1
vote
3answers
93 views

Is it safe to share my hostname

I am using GNU/Linux. Sometimes, I copy/paste code from the terminal (like user@hostname ..) to put it in a forum thread or a blog ..etc And I was always wondering that it is better to hide it . Is ...
0
votes
3answers
75 views

Local network proxy/spoof

Are intruders in a local network able to mask their local IP in any way? Could they 'hijack' another local IP and perform scans and exploits from there?
3
votes
3answers
372 views

Watching for applications like WireShark and other eaves dropping on corporate network

Are there ways to monitor and check for network monitoring like WireShark? Or would it just be more ideal to ensure every application uses SSL to ensure no employee or anyone could packet sniff ...
0
votes
1answer
88 views

Is there a way of determining if tor is running on a remote machine?

In most of the companies, IT guys block some sites and by using TOR or other VPNs people walk around these blocks and gain access to blocked content. My question is, assuming TOR is running on ...
1
vote
1answer
96 views

Internet monitoring and DNS encryption

If someone hides their DNS traffic by encrypting it with a service such as OpenDNS's DNSCrypt, would you still be able to see which URLs they're viewing? Also, if that person uses HTTPS 100% of the ...
3
votes
2answers
707 views

Why do multiple IP Addresses in my local network point to the same computer?

I'm new to linux and nmap, and I am attempting to do a scan of my local network. Using nmap I find that there are 4 hosts on my network (10.0.2.2, 10.0.2.3, 10.0.2.4, 10.0.2.15). I am using VirtualBox ...
1
vote
1answer
229 views

Disabling Ping/ICMP Requests [duplicate]

Are there any benefits from disabling Ping/ICMP requests on servers? I've read where people say to do it but I can't seem to find any real benefits with it. Only more likely to cause more problems. ...
0
votes
1answer
130 views

TCP IN connection from another user in my home network. Is it safe?

I'm using Comodo Firewall and I noticed that sometimes I'm getting TCP IN connection from another IP address in my home network (only one router and few wireless users): TCP IN | 192.168.1.50 | ...
1
vote
1answer
359 views

Wireshark detecting suspicious messages through jabber protocol, It says it is from my website, no idea what it is

I was doing a network scan on my computer with Wireshark and came up with something very suspicious: I found a stream with the jabber protocol. I do not have a jabber server set up nor do I have any ...
19
votes
5answers
2k views

419 Nigerian scam problem

I fell in a scamming trap. It took me a while to figure it out. Blinded like an idiot. But it is what it is. I can only do as much as I can now. Tell me if there is anything else I should do. After ...
5
votes
3answers
7k views

How does “traceroute over TCP” work, what are the risks, and how can it be mitigated?

There is a utility called tcptraceroute, and this enhancement called intrace that is used just like a standard traceroute, but it works over TCP. How is the syn flag in TCP used to achieve ...
7
votes
1answer
369 views

different portscan tools give different results

I have different results as of my open TCP ports. When using nmap -sS 127.0.0.1, I get some 5 usual open ports, but when using osx built-in tool as stroke, I get those 5 ports plus 5 extra ports. How ...
2
votes
4answers
2k views

How to remote monitor a computer network traffic?

I would like to know if it is possible to remote monitor the incoming and outcoming network traffic of a specific IP from my network. I need to log the time, ip numbers and port that contact the ...
4
votes
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
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 ...
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 ...
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 ...
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 ...
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, ...
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 ...
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 ...
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?
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 ...
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
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 ...
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 ...
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?
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 ...
9
votes
2answers
975 views

Malware known to use port knocking to evade detection by network scanners?

Are there any known cases of malware in the wild that utilize port knocking on a backdoor to evade detection by network scanners?
5
votes
4answers
919 views

Persisting and comparing NMAP scans

Does anyone have any good recommendations on a good tool for persisting NMAP scans to database? It may be a tool for persisting or simply a java library for easy parsing of the nmap xml scan result ...
19
votes
3answers
7k views

What benefits does Nessus have over OpenVAS?

Nessus and OpenVAS appear to have fairly similar features. Why would you choose one over the other, besides the benefit of commercial support (which isn't available for Nessus Home Feed users ...
12
votes
4answers
577 views

Wireless Activity Monitoring for PCI DSS Compliance

In an effort to be PCI DSS compliant, I took a trustkeeper.net questionnaire. I failed the question that asks Is the presence of wireless access points tested for by using a wireless analyzer at ...