I'm seeing a persistent address showing up on my firewall router logs. The address is 10.98.115.9:67, and is broadcasting to 255.255.255.255. I know that this would typically signal a BOOTP service, such as a bootp server announcing itself on the network. But I can't isolate which machine it is. I have only one machine running, then turn off the standalone wireless router and the switch, but it continues to show up. I ran nmap against it, and it automatically included another, completely different, IP in the scan. It's got me baffled. Here's the output:
Can anyone shed light on this behavior?
PS. it's not a one-off thing, I ran it several times and every time it did the same.
I am pretty new at running nmap ,and i have some doubt about some o/ps the nmap shows
I tried to scan my own system for UDP open ports
I see that if i use one UDP port say 13
It shows that its in open state , etc
But if i scan for the whole UDP ports in the nmap-services . I gives te... (2 Replies)
Hi,
Whenever I tried to run nmap on my linux (red hat 6.2) boxes i got these outputs:
4444/tcp filtered krb524
6666/tcp filtered irc-serv
6699/tcp filtered napster
8888/tcp filtered sun-answerbook
Can anybody please... (10 Replies)
Hi everyone!
I've temporarily come out of hibernation (and will be gone for about two weeks after this post too) to ask for input on a small PHP script I have just completed.
The script aims to be a remote front-end for Nmap - now for the safety of this post, I ask that any replies refrain from... (6 Replies)
I'm trying to compile nmap 4.11 on an aix 5.2 machine and get the following error when attempting the 'make' command;
make
"Makefile", line 1: make: 1254-055 Dependency line needs colon or double colon operator.
"Makefile", line 14: make: 1254-055 Dependency line needs colon or double colon... (2 Replies)
Hi,
Is it possible to change the nmap port name: For eg:
21/tcp open ftp
53/tcp open domain
80/tcp open http
111/tcp open rpcbind
836/tcp open unknown
843/tcp open unknown
953/tcp open rndc
I need to change the port number 836 unknown to the name of the... (4 Replies)
So...
I'm trying to script and FTP Backup of some files from openVMS Alpha machine to a Unixware 7 machine.
I decided to use .netrc to do all the FTP actions however when I send the
nmap command. It pretty much gets ignored while even other things such "ascii", "case" etc.. get respected... (0 Replies)
I 'm getting following error when i run nmap for an ip .. what could be the reason for it ?
#nmap 10.22.67.18
Starting Nmap 4.68 ( Nmap - Free Security Scanner For Network Exploration & Security Audits. ) at 2009-07-06 19:07 UTC
Warning: Unable to open interface e1000g3301000 -- skipping it.... (2 Replies)
Hi ,
I am exploring the nmap utility for Linux.
I know that, nmap binaries are specific to the platforms e.g. nmap binaries will be diferent for Windows , AIX , Solaris and Linux platforms.
Can anyone tell me , will the nmap binaries be different for different flavours of Linux such as... (1 Reply)
Scripting language : Bash Shell Script
I have to create function in which read IP addresses one by one from one file (ip.txt) and scan these IP using nmap. (4 Replies)
Scripting language : Bash Shell Script
1. problem statement
I have to create function in which read IP addresses one by one from one file (iplist.txt) and scan these IP using nmap. This scan IP's output is saved in output.txt file and parse output.txt to save only open ports with particular IP... (3 Replies)
Discussion started by: sk151993
3 Replies
LEARN ABOUT LINUX
netmasks
netmasks(4) File Formats netmasks(4)NAME
netmasks - network mask database
SYNOPSIS
/etc/inet/netmasks
/etc/netmasks
DESCRIPTION
The netmasks file contains network masks used to implement IP subnetting. It supports both standard subnetting as specified in RFC-950 and
variable length subnetting as specified in RFC-1519. When using standard subnetting there should be a single line for each network that is
subnetted in this file with the network number, any number of SPACE or TAB characters, and the network mask to use on that network. Network
numbers and masks may be specified in the conventional IP `.' (dot) notation (like IP host addresses, but with zeroes for the host part).
For example,
128.32.0.0 255.255.255.0
can be used to specify that the Class B network 128.32.0.0 should have eight bits of subnet field and eight bits of host field, in addition
to the standard sixteen bits in the network field.
When using variable length subnetting, the format is identical. However, there should be a line for each subnet with the first field being
the subnet and the second field being the netmask that applies to that subnet. The users of the database, such as ifconfig(1M), perform a
lookup to find the longest possible matching mask. It is possible to combine the RFC-950 and RFC-1519 form of subnet masks in the net-
masks file. For example,
128.32.0.0 255.255.255.0
128.32.27.0 255.255.255.240
128.32.27.16 255.255.255.240
128.32.27.32 255.255.255.240
128.32.27.48 255.255.255.240
128.32.27.64 255.255.255.240
128.32.27.80 255.255.255.240
128.32.27.96 255.255.255.240
128.32.27.112 255.255.255.240
128.32.27.128 255.255.255.240
128.32.27.144 255.255.255.240
128.32.27.160 255.255.255.240
128.32.27.176 255.255.255.240
128.32.27.192 255.255.255.240
128.32.27.208 255.255.255.240
128.32.27.224 255.255.255.240
128.32.27.240 255.255.255.240
128.32.64.0 255.255.255.192
can be used to specify different netmasks in different parts of the 128.32.0.0 Class B network number. Addresses 128.32.27.0 through
128.32.27.255 have a subnet mask with 28 bits in the combined network and subnet fields (often referred to as the subnet field) and 4 bits
in the host field. Furthermore, addresses 128.32.64.0 through 128.32.64.63 have a 26 bits in the subnet field. Finally, all other
addresses in the range 128.32.0.0 through 128.32.255.255 have a 24 bit subnet field.
Invalid entries are ignored.
SEE ALSO ifconfig(1M), inet(7P)
Postel, Jon, and Mogul, Jeff, Internet Standard Subnetting Procedure, RFC 950, Network Information Center, SRI International, Menlo Park,
Calif., August 1985.
V. Fuller, T. Li, J. Yu, K. Varadhan, Classless Inter-Domain Routing (CIDR): an Address Assignment and Aggregation Strategy, RFC 1519,
Network Information Center, SRI International, Menlo Park, Calif., September 1993.
T. Pummill, B. Manning, Variable Length Subnet Table For IPv4, RFC 1878, Network Information Center, SRI International, Menlo Park, Calif.,
December 1995.
NOTES
/etc/inet/netmasks is the official SVr4 name of the netmasks file. The symbolic link /etc/netmasks exists for BSD compatibility.
SunOS 5.10 7 Jan 1997 netmasks(4)