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if ;then
echo "mrnet greater 5000"
gzip /var/log/mrnet.log
mv /var/log/mrnet.log.gz /var/log/mrnet.log.1.gz
if ];then
i=1
let i++
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Exercise:
Protection of WEB and DNS servers using the context-free rules for packet filtering:
- Protect your WEB-server, so that would be for him can be accessed by browsers, and could go to dns.
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4. Cybersecurity
Exercise:
Protection of WEB and DNS servers using the context-free rules for packet filtering:
- Protect your WEB-server, so that would be for him can be accessed by browsers, and could go to dns.
- Protect your primary DNS-server so that it could be to contact clients and secondary servers.... (1 Reply)
Discussion started by: numeracy
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5. IP Networking
Hi, wondering if anyone can suggest a tool to me that will let me either cut & paste hex or type it in for packet decoding.
I want to be able to decode a packet as done with tcpdump or wireshark, but I want to be able to manually input the hex myself. (2 Replies)
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can anyone tell me how can i capture the packets. i have tried ethernet software to capture them but its not doing what i want it to do it (1 Reply)
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7. Shell Programming and Scripting
Hi,
I need some help.
Shell script counter. i need to add condition to check if counter is more than 10 and longer than 3 hours? it runs every 5 mins. it only check count and send email right now.
it runs in cron as below
gregcount.ksh gregdb 10 > /tmp/gregcount.out 2> /tmp/gregcount.err
... (1 Reply)
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Hi,
Is there any way that i can directly take out the IP packet and see its contents.
Waiting for your answer ..............
Bye (4 Replies)
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LEARN ABOUT DEBIAN
vend::counterfile
Vend::CounterFile(3pm) User Contributed Perl Documentation Vend::CounterFile(3pm)
NAME
Vend::CounterFile - Persistent counter class
SYNOPSIS
use Vend::CounterFile;
$c = new Vend::CounterFile "COUNTER", "aa00";
$id = $c->inc;
open(F, ">F$id");
DESCRIPTION
(This module is modified from Gisle Aas File::CounterFile to use
Interchange's locking protocols -- lack of fcntl locking was causing
counter problems.)
This module implements a persistent counter class. Each counter is represented by a separate file in the file system. File locking is
applied, so multiple processes might try to access the same counters at the same time without risk of counter destruction.
You give the file name as the first parameter to the object constructor ("new"). The file is created if it does not exist.
If the file name does not start with "/" or ".", then it is interpreted as a file relative to $Vend::CounterFile::DEFAULT_DIR. The default
value for this variable is initialized from the environment variable "TMPDIR", or /usr/tmp is no environment variable is defined. You may
want to assign a different value to this variable before creating counters.
If you pass a second parameter to the constructor, that sets the initial value for a new counter. This parameter only takes effect when
the file is created (i.e. it does not exist before the call).
When you call the "inc()" method, you increment the counter value by one. When you call "dec()" the counter value is decrementd. In both
cases the new value is returned. The "dec()" method only works for numerical counters (digits only).
You can peek at the value of the counter (without incrementing it) by using the "value()" method.
The counter can be locked and unlocked with the "lock()" and "unlock()" methods. Incrementing and value retrieval is faster when the
counter is locked, because we do not have to update the counter file all the time. You can query whether the counter is locked with the
"locked()" method.
There is also an operator overloading interface to the Vend::CounterFile object. This means that you might use the "++" operator for
incrementing the counter, "--" operator for decrementing and you can interpolate counters diretly into strings.
BUGS
(This problem alleviated by this modified module)
It uses flock(2) to lock the counter file. This does not work on all systems. Perhaps we should use the File::Lock module?
COPYRIGHT
Copyright (c) 1995-1998 Gisle Aas. All rights reserved. Modifications made by and copyright (C) 2002 Red Hat, Inc. and (c) 2002-2007
Interchange Development Group
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
AUTHOR
Gisle Aas <aas@sn.no>
perl v5.14.2 2010-03-25 Vend::CounterFile(3pm)