Webscrab proxy creates loads of TCP6 connections despite IPV6 being down
I am working in Kali Linux. I have disabled ipv6 by the command, "sysctl -w net.ipv6.conf.all.disable_ipv6=1". Below output of "ifconfig -a" shows no IPV6.
Code:
eth0: flags=4163<UP,BROADCA[INDENT][INDENT]ST,RUNNING,MULTICAST> mtu 1500
I've been asked to get a breakdown of what is consuming CPU time on our server over an extended period ?
Have been asked about the CPU load on our server and I need to be able to go back to my boss and indicate what % is consumed by what process (or group of processes). I.e. 15% is database... (2 Replies)
Hi,
I am involved in a project on Debian. One of my requirement is to route an IP packet in my application to a proxy server and receive the reply from the proxy server as an IP packet. My application handles data at the IP frame level. My application creates an IP packet(with all the necessary... (0 Replies)
Hi All,
I've got file1 like this:
aaa bbb ccc
ddd eee fff
ggg hhh kkk
ppp mmm nnn
and file 2 like this:
aaa qqq www
ddd fff ggg
ggg sss zzz
ppp vvv yyy
and file 3 like this:
aaa
ggg
ppp
I need to match the first column of file3 and file1, then add the rest of the file 1 to... (3 Replies)
Hi,
I was Googling to get info "How OS loads process into its memory to execute?" i mean when i execute ./<exename> , How OS exectes it?
It will be better if i tell my intention,
In my $LOGNAME saveral process are running, among all of these two process are my target process. Basically I... (1 Reply)
Hey, I recently installed Debian on a desktop PC but when it starts I can't see anything (the monitor say no signal). I don't have any idea or even a way to figure out what going on here since I can't see anything at all not even the console. Is there something that I missed in the install, or is... (22 Replies)
We are deploying an app to our students that is running as a daemon. It keeps them from using certain software. The problem is that when we initially deploy it we don't want to require a restart. So we decided to use launchctl to load the daemon manually. When we do it this way, though, the... (4 Replies)
I need to configure a proxy on my local machine to use an upstream proxy (installed on another machine). The upstream proxy requires Digest/NTLM authorization. I want the local proxy to deal with the upstream proxy's authorization details and provides authorization free access to users that connect... (0 Replies)
Hello,
Is there any way to su another user and loading its profile with an argument.
For example I am user1 and I want to start user2
user2 .profile is interactive asking user to pass some values
I want to automate a process by switching user and if I pass an argument the interactive... (4 Replies)
Hi,
I have created a bonding bond1 interface with 6 Eth , mode=4. Recently i have changed my old ipv6 to new one and tried to restart as well as reload network service. Post which i can see old as well as changed ipv6 in ifconfig command output. Below are few files and command output for your... (1 Reply)
Discussion started by: omkar.jadhav
1 Replies
LEARN ABOUT DEBIAN
net::ipv4addr
IPv4Addr(3pm) User Contributed Perl Documentation IPv4Addr(3pm)NAME
Net::IPv4Addr - Perl extension for manipulating IPv4 addresses.
SYNOPSIS
use Net::IPv4Addr qw( :all );
my ($ip,$cidr) = ipv4_parse( "127.0.0.1/24" );
my ($ip,$cidr) = ipv4_parse( "192.168.100.10 / 255.255.255.0" );
my ($net,$msk) = ipv4_network( "192.168.100.30" );
my $broadcast = ipv4_broadcast( "192.168.100.30/26" );
if ( ipv4_in_network( "192.168.100.0", $her_ip ) ) {
print "Welcome !";
}
etc.
DESCRIPTION
Net::IPv4Addr provides functions for parsing IPv4 addresses both in traditional address/netmask format and in the new CIDR format. There
are also methods for calculating the network and broadcast address and also to check if a given address is in a specific network.
ADDRESSES
All of Net::IPv4Addr functions accept addresses in many formats. The parsing is very liberal.
All these addresses would be accepted:
127.0.0.1
192.168.001.010/24
192.168.10.10/255.255.255.0
192.168.30.10 / 21
10.0.0.0 / 255.0.0.0
255.255.0.0
Those wouldn't though:
272.135.234.0
192.168/16
Most functions accepts the address and netmask or masklength in the same scalar value or as separate values. That is either
my($ip,$masklength) = ipv4_parse($cidr_str);
my($ip,$masklength) = ipv4_parse($ip_str,$msk_str);
USING
No functions are exported by default. Either use the ":all" tag to import them all or explicitly import those you need.
FUNCTIONS
ipv4_parse
my ($ip,$msklen) = ipv4_parse($cidr_str);
my $cidr = ipv4_parse($ip_str,$msk_str);
my ($ip) = ipv4_parse($ip_str,$msk_str);
Parse an IPv4 address and return in scalar context the address in CIDR format, in an array context the address and the mask length.
If the parameters doesn't contains a netmask or a mask length, in scalar context only the IPv4 address is returned and in an array
context the mask length is undefined.
If the function cannot parse its input, it croaks. Trap it using "eval" if you don't like that.
ipv4_broadcast
my ($broadcast) = ipv4_broadcast($ip_str);
my $broadcast = ipv4_broadcast($ip_str,$msk_str);
This function returns the broadcast address. If the input doesn't contain a netmask or mask length, the default netmask is assumed.
This function croaks if the input is invalid.
ipv4_network
my $cidr = ipv4_network($ip_str);
my $cidr = ipv4_network($cidr_str);
my ($net,$msk) = ipv4_network( $net_str, $msk_str);
In scalar context, this function returns the network in CIDR format in which the address is. In array context, it returns the network
address and its mask length as a two elements array. If the input is a host without a netmask or mask length, the default netmask is
assumed.
Again, the function croaks if the input is invalid.
ipv4_in_network
print "Yes" if ipv4_in_network( $cidr_str1, $cidr_str2);
print "Yes" if ipv4_in_network( $ip_str1, $mask_str1, $cidr_str2 );
print "Yes" if ipv4_in_network( $ip1, $mask1, $ip2, $msk2 );
This function checks if the second network is contained in the first one and it implements the following semantics :
If net1 or net2 is a magic address (0.0.0.0 or 255.255.255.255)
then this function returns true.
If net1 is a host, net2 will be in the same net only if
it is the same host.
If net2 is a host, it will be contained in net1 only if
it is part of net1.
net2 is only part of net1 if it is entirely contained in
net1.
Trap bad input with "eval" or else.
ipv4_chkip
if ($ip = ipv4_chkip($str) ) {
# Do something
}
Return the IPv4 address in the string or undef if the input doesn't contain a valid IPv4 address.
ipv4_cidr2msk
my $netmask = ipv4_cidr2msk( $cidr );
Returns the netmask corresponding to the mask length given in the input. As usual, croaks if it doesn't like your input (in this case
a number between 0 and 32).
ipv4_msk2cidr
my $masklen = ipv4_msk2cidr( $msk );
Returns the mask length of the netmask in the input. As usual, croaks if it doesn't like your input.
AUTHOR
Francis J. Lacoste <francis.lacoste@iNsu.COM>
COPYRIGHT
Copyright (c) 1999, 2000 iNsu Innovations Inc. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the terms as perl itself.
SEE ALSO perl(1)ipv4calc(1).
perl v5.10.1 2010-07-26 IPv4Addr(3pm)