Programming :: Checking IP's Against A Whole Lot Of DNSBL's
Dec 17, 2010
@work we use Zabbix and also IP-audit for monitoring. Each day we have a list of outgoing SMTP-servers on our IPaudit server.
This script will take that list and check them all against a whole bunch of DNSBL's
# cat /usr/local/sbin/check_rbl
Code:
#!/bin/bash
#####################################################
# check_rbl
#####################################################
# 17-12-2010 by JP van Melis
#
[Code].....
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Apr 2, 2010
I am running Sendmail server for SMTP. I included dnsbl form spam filtering and it works well.
Quote:
But sometimes it seems that sendmail just doesn't check the dnsbl. I was capturing the communication and I find out that several times the client just send the message and the sendmail does not even send a packet for check it in dnsbl. The whole SMTP session was completed without one blacklist check?
I use FEATURE(`delay_checks')dnl for allowing authenticated clients to pass the filters. Can this cause that the SMTP session is completed to fast and sendmail just has no time to check the dnsbls? (the check is delayed)
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Feb 2, 2010
I have a problem with sendmail. I am using the zen.spamhaus.org dnsbl, and it is doing a wonderful job of blocking incoming spam from open relays. But it is blocking my users who are on a dynamic ip range from any isp remotely. They should be able to authenticate and send messages no matter where they are as long as they authenticate right? I just want to use the blacklist to block incoming mail to my server that is being distributed to our email addresses.
I want to block people that are hosting mail servers and sending mail to my domain from isp sub-nets. But I don't want to block my users that are sitting on isp subnets using their mail client to authenticate over smtp and send an email from my mail servers.
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Sep 17, 2010
Am using atmail server but recently i have been facing the problems of spams which caused my ip address to be blacklisted to some dnsbl check. am using below dnsbl to filter spams to my atmail
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Jan 25, 2010
Code:
I am trying to do a search to check if the input is using alphabets and nothing else.
I tried using [[:digit:]] and [[:alpha:]] but none seems to work
When i use digit, it read 22.k as alphabet and not as a wrong syntax.
For alpha , it does not allow me to input data which has spaces such as " hello world".
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Jan 18, 2010
what i am trying to do is to allow the user to key in data such as "23.23" or "24" , as it is the price of certain objectsHow am i able to design a check which will allow me to prevent users from typing in input such as "ab.21" or "rfrr" as this field is purely a numerical field. The problem i am facing is i tried using this search code.
Code:
echo "read this"
read this
[code]....
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Sep 18, 2010
I am trying to figure out how i would go about finding out where system call is made and error checking is not done. I have code below, if somebody can point me in the right direction where system call is made but error checking is not done.Quote:
#include "shell.h"
#include <stdio.h>
#include <string.h>
[code]....
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Nov 8, 2010
I need to allocate a % of the total system memory for a buffer but what is the best method to determine how much memory is in the system? So far the only way I have found is to get the pages of memory:
Code:
long sysconf(_SC_PHYS_PAGES)
Is that the only option?
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Apr 20, 2010
I run my own icecast2 server. In the near future it looks like, I will be doing some shows. I would like to beable to change my link, so if I am broadcasting, to go to the stream if not pop a box for my schedule.Now from when I was checking to see if my webcam was up or not, i used this.does anyone know haw to change my code for this? I know when I'm not stream it generates a 404 error, in winamp (on windows)
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Apr 11, 2010
i have to write a program which checks the information inside a text file to make sure it is all integers and then convert the integers to roman Numerals. My program seems to have a bit of a problem and im not sure where exactly the problem is....
Code:
#include<stdlib.h>
#include<string>
[code]....
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May 11, 2010
How can i check what operating system, i am running on, at run time?Moreover, how can i retrieve that current state of process?
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Jul 21, 2011
1. i need to check whether the oracle database is running or not if it is running it will run auto mount script.nohup /u01/app/oracle/product/11.2.0/dbhome_1/bin/dbfs_client dbfs@xxxxx -o allow_other,direct_io /u01/app/oracle/DBFS/XXXXX < /home/oracle/passwd_dbfs.txt&nohup /u01/app/oracle/product/11.2.0/dbhome_1/bin/dbfs_client dbfs@xxxxxx -o allow_other,direct_io /u01/app/oracle/DBFS/XXXXX < /home/oracle/passwd_dbfs.txt &2. For every 1 hour i need to check above mount points is mounted or not if it is not mounted it should be mounted.
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Jul 17, 2010
It is possible to check who logged in with "who" command. If we are also logged in to that linux pc.
But, is there any possibility to check without our login?(not even by ssh)
Our logging in to find that pc, will be wasting the cpu resources. And may disturb the user who is working on the x-session.
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Jan 19, 2010
I am trying to do a search for the certain books, and I am trying to make it case insensitive. what I have come up with so far is this :
Code:
Database.txt
RETARDED MONKEY:RACHEAL ABRAHAML:30:30:20
GOLD:FATIN:23.20:12:3
StUPiD:JERLYN:20:40:3
Code:
echo -n "Title: "
read Title
echo -n "Author:"
read Author
echo ""
valuecheck='grep -i "$Title" Database.txt | grep -i "$Author" | awk -F":" '{ print $1}''
echo $valuecheck
if [ $Title = $valuecheck ] ; then
echo "HOHOHO"
else
echo "too bad"
fi
The issue which I am having is that, when it does the search for the correct row to be inputted into valuecheck, it will input the value as written in the database, which is in Uppercase. For this case, if I type in stupid for $Title and jerlyn for $Author, it searches the correct row, but the awk will print "STUPID" into the variable as that is what is written in the database. So how can I make my if statement case insensitive? Currently it reads like this:
Code:
if [ $Title = $valuecheck ] ; then
which means
if [stupid = StUPiD ] ; then
How can I make the if statement it case insensitive to allow it to display "HOHOHO"
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Apr 8, 2010
i am searching a string(with multiple words) in a file that file contains the string but words are separated with multiple white space.
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grep "pattern" file_in_which_to_search i am reading the "pattern" so i cannot modify the "pattern"
so my pattern match does not take place, though i want it to match.
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Apr 22, 2010
I'm trying to figure out a simple script to go thought 500 Cisco devices to see if I can SSH to the device. Then display something like this:
10.0.0.1 Yes
10.0.0.2 No
10.0.0.3 No
I tried something like this:
Code:
ssh -q -o BatchMode=yes -o StrictHostKeyChecking=no user@10.0.0.1 "echo 2>&1" && echo "Yes" || echo "No"
When tested the above line it replied No, even if I tried it on a Switch that does not have SSH configure.
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Jan 20, 2009
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Jan 20, 2011
I have a bash script that checks for contents in a folder every 15 seconds and then acts on it's contents. This works great for the average size file however on very large files it starts acting on the file before it's completely written. Is there a facility in bash shell to get a file complete signal or such? here is trigger to launch a larger script.
Code:
#!/bin/sh
while true
do
$HOME/bin/hpgl.sh >/dev/null 2>&1 &
[code].....
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Mar 28, 2009
I need to check whether a shell script variable contains non-zero numeric data to proceed. The variable should contain numeric values, but may in fact contain zeroes, blank space or nothing. So far, I have tried various combinations of:
Code:
if test $variable
then
if test $variable -gt 0
then
echo "good data exists"
else "no good data exists"
fi
fi
It partially works, but I get either "too many arguments" or "integer expression expected".
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Mar 3, 2010
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Feb 26, 2010
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Apr 8, 2011
I'm trying to determine if IE is viewing my web page with the following HTML code:
Code:
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:setlocal spell spelllang=de
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Aug 24, 2009
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It wouldn't been a problem setting my laptop to sleep mode when I'm done and it was working fine but after a few updates, once I put my laptop to sleep I can't do it again in the same row. I have to shutdown. Lets say I tried anyway, system stop being responsive, while I let it continue to see it will become responsive again, it went on for an hour and half. It's annoying... So my question is, what option can tell the kernel to not scan my HDD.
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May 31, 2010
I'm trying to get a program to compile with OpenGL support and it's saying that the headers are missing. But I think (or thought!) that I already had Open GL up and running. My suspicion is that I need to install the appropriate -devel files...but I just can't seem to find them. Furthermore, I don't want to tweak my system and install proprietary Nvidia drivers if things are already working just fine.
I have a Geforce 8300 GS in a i586 32bit Dell Inspiron 530. I'm trying to compile Cinelarra and keep getting:
Quote:
OpenGL 2.0 libraries missing Hardware acceleration using OpenGL 2.0 is disabled
Does anyone know which driver (ie: 96xx? 173xx?) I should be using for this? Where are these libraries? How can I find them and tell Cinelarra where to look?
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Jul 19, 2010
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