0
votes
1answer
49 views

nmap shows services I'm unaware of

When I run nmap <host> on my server it says the following ports are open, but my iptables have no rules explicitly allowing them. 135/tcp filtered msrpc 139/tcp filtered netbios-ssn 445/tcp ...
0
votes
2answers
44 views

making sense of the nmap options

An nmap option I see in some examples uses the -sP option, but I haven't seen this listed anywhere in their options or --help. Is -sP an option you construct from the other options? If so, please ...
4
votes
1answer
242 views

command for MAC broadcast

I am looking for a command to discover all hosts on the same LAN segment from a host with unassigned IP, default gateway, and subnet. I know there's ping 255.255.255.255 but that operates at layer 3 ...
0
votes
2answers
130 views

How can I scan using nmap and Zenmap all hostnames that begin with a particular string?

I have a number of nodes on a couple of networks whose hostnames all start with org. Some examples are: orgwebsvr1 orgwebsvr2 orgwebsvr3 orgdbsvrmysql orgdbsvrmssql orgdbsvrosql With nmap, I know ...
0
votes
3answers
108 views

how can I view all of the machine/host names on a network

I am trying to find a reliable way to view all of the host/machine names on a local network, so for instance "Jim's Ipad" or "Austi's IMac". At the moment the only way I can do it is by looking ...
4
votes
1answer
352 views

How to check if an IP address is free on a network

I'm gonna setup a Wireless router for a customer. They have subnet 10.253.48.0/24 What can I do to check if the IP 10.253.48.243 is available to set up the router? I'm on out on a local network at my ...
-1
votes
2answers
136 views

nmap configuration file [closed]

I'm running Linux mint and I need to modify my nmap configuration's default service enumeration by making a new service list. I think I do this in the config file (I'm not positive), but I can't seem ...
4
votes
7answers
547 views

Scan for connected, powered on computers on a network?

I want to scan for powered on computers on my LAN and gather logs about that. I tried nmap but it didn't work very well (a lot of switched on computers are not getting detected). nmap -sP ...
2
votes
0answers
881 views

Issue with Netgear GS108T Managed Switch and Jumbo Frames

I recently purchased a Netgear GS108T managed switch and I am trying to configure jumbo packets between my NAS (Thecus N4100Pro), PC and managed switch. I should mention the fact that I was able to ...
-2
votes
1answer
63 views

how can I verify whether multiple ip addresses are hosting on same server? [closed]

Many hosting providers put multiple ip addresses on same physical machine. If I have two ip address, for example: 192.168.1.100 and 192.168.1.101. If I can only send probing packets from afar, how can ...
3
votes
2answers
720 views

Test if an IP is being used in an internal network without using nmap

I can perform port scan using nmap to test if a given IP is being used, e.g. nmap -PR 192.168.1.9 However, nmap is not installed in most server, is it possible to have the same result (e.g. check ...
4
votes
2answers
3k views

nmap does not find alive hosts with ping scan

I try to ping scan my local network using nmap, but it doesn't seem to find machines that are for sure alive. It responses to ping but on to ping scan. Results for ping: $ ping 192.168.0.2 PING ...
2
votes
1answer
265 views

Detecting network state with arping

I am developing system for detecting network actual state. One part is to get all IPs and their respective MAC addresses. Right now I am using arping in DAD (Duplicate Address Discovery) mode. I send ...
3
votes
2answers
168 views

Removing new fingerprint detection message from nmap

I run a nmap scan of my hosts daily to check for open ports. sudo nmap -f -sS -sV --log-errors -append-output -p1-9999 host.com But along with the output I get a long list of fingerprint ...
0
votes
1answer
45 views

Managing the Network from a linux machine

I am using Linux at my work, and i am kind of a sys admin / IT support, (not exactly my title but i do this kind of things since there is no one else). There are mostly Windows user in my organization ...
0
votes
1answer
519 views

Running nmap over vpn on Mac OS X 10.7 Lion fails

When connected to VPN (I have used OpenVPN and TunnelBear VPN service) nmap stops working. Ping, nc and other network tools work however nmap doesnt. When not running vpn, I get: $ sudo nmap ...
0
votes
2answers
459 views

Block nmap xmas scan from detecting my server's open port

I have blocked all the basic nmap scans using iptables by making a rule in the INPUT chain that if the no of packet send from a particular ip within 10 seconds exceeds a particular limit then put that ...
1
vote
1answer
168 views

Allow nmap advanced scans for a normal user

I want to allow a normal user to run NMAP's advanced scans like XMAS, TCP FIN, TCP NULL scans. Can somebody please tell me how to do that ?? Since it uses raw packets so whether setting the setuid bit ...
1
vote
2answers
443 views

Cannot connect from Linux to SQL Server through a firewall

I need to connect from a Debian GNU/Linux webserver to an SQL Server database which is hosted on a Windows machine within an organization's local network. The person in charge of the database server ...
1
vote
5answers
2k views

Can't get nmap to work under Windows 7 64 bit

I'm trying to install and run the nmap tool to test my server, but it keeps saying Note: Host seems down. If it is really up, but blocking our ping probes, try -P0 and showing all the server ports ...
0
votes
2answers
205 views

Command or utility to measure the amount of traffic generated by an nmap scan

First, just a bit of background: My ISP has decided to block all inbound connections (from their customers' perspective) which effectively means that I can no longer host anything on my connection ...
0
votes
2answers
393 views

nmap reports host up when it isn't

On an Ubuntu VMWare VM I ran: sudo nmap -sP 192.168.0.* This returned: Starting Nmap 5.00 ( http://nmap.org ) at 2010-12-28 22:46 PST Host 192.168.0.0 is up (0.00064s latency). Host 192.168.0.1 ...
0
votes
2answers
319 views

Help! Whats up with my network?

I've just done a simple nmap scan of my network with nmap: nmap -sP 192.168.1.1-255 networkserver@networkServer:~$ sudo nmap -sP 192.168.1.1-255 Starting Nmap 5.00 ( http://nmap.org ) at 2010-08-26 ...
1
vote
3answers
569 views

How to use nmap to ping domains and get the output as domains and not IPs?

I am trying to use nmap to ping a list of domains, i am using: nmap -sP -iL /path/to/file/domains The ping works fine but in the output for domains that ping was successful I get the domains ip ...
4
votes
5answers
2k views

Is there a Nagios plugin that uses Nmap and does port checking?

I need to monitor open and closed ports on dozens of hosts. I've found a Nagios plugin that does what I need, but I would have to use this script through NRPE. Some of the hosts are powered by Linux ...