I would like to know the blocking methode In a Firewall or a Router.whether i will be done by Protocol wise, ho? or it will done through Host wise, How ?
View 2 RepliesI want to split file foo into two parts, and I only intersted in the first one. But the N bytes in which the first part consists, I want it to be an exact replica of the corresponding bytes of foo. More exactly:
Code:
foo foo1 foo2
==============================
90 90 05
[code]....
Is it wise to mix Squeeze stable with sid packages?Or is it better to install squeze testing and mix testing with sid?
View 5 Replies View RelatedI just recently reinstalled openSUSE 11.3 last night with the GNOME desktop. Since I'm starting fresh again, I'd like to set up my System as flawless as possible.
So, my question is stated in the Title. How do you set System-Wide environment variables on OpenSUSE 11.3 // GNOME? I usually set them by adding an export to my ~/.bashrc, but I remember in Ubuntu that I could add them to /etc/environment. I checked that file out on my system, and it has a the default comment on it stating:
"This file is parsed by pam_env module...Syntax: simple "KEY=VAL" pairs on seperate lines"
This seems to be the spot to add my "export JAVA_HOME=/usr/java/..etc", etc. but I wanted to clarify before I went ahead and made any changes.
I have two files: one is like
preface
Introduction
chapter 1
the other is like
1
2
3
I was wondering how to column-wise combine the two files into one:
preface 1
Introduction 2
chapter 1 3
by using some utilities, such as awk, sed, available in Ubuntu?
I have a problem with file names changes. I have a hundred of file with same names and different subdirectories. I want to change that file names by their subdirectery names.
Currently is:
file name------------------------subdirectory name
1_km_16_days_EVI_s2_01200_01200.img --> MOD13A2.A2000049.h23v03.005.dir
1_km_16_days_EVI_s2_01200_01200.img --> MOD13A2.A2000065.h23v03.005.dir
1_km_16_days_EVI_s2_01200_01200.img --> MOD13A2.A2000081.h23v03.005.dir
...
I want to
MOD13A2.A2000049.h23v03.005.img
MOD13A2.A2000065.h23v03.005.img
MOD13A2.A2000081.h23v03.005.img
How to start from scratch step wise, partitioning a 300 GB HDD for Kubuntu only.
Number, types, sizes, etc of partitions?
I just migrated to Ubuntu 10.04 from windows and I could not be more satisfied, except for one minor, nitpicky detail. In iTunes I was able to sort my music by "album by year". That is, my music was sorted primarily by artist, then by album year. So each artist had their albums listed in chronological order. My library is meticulously tagged, so every track on every album is tagged with the same YEAR value. Is this possible in Rhythmbox? Is there a plugin or will i have to edit a .conf file (or similar) somewhere? I'm new to Ubuntu, but not afraid of getting my hands a bit dirty, so to speak.
View 1 Replies View Relatedi have a M1730 with 2 HD in RAID 0. Windows 7 64bit installed. I tried to install Ubuntu 10.10 with WUBI, all ok the installation in Windows. Restarted the system I have 2 multiboot options with the new Ubuntu... it starts but in graphic mode it tries to finish the installation and stops with an error message like that: "root filesystem not defined...".The problem is the raid0 of my disks or other?
View 5 Replies View RelatedI need to write a shell script which can compare two files(text files) character wise. eg. underscore is space.
------FILE 1---------------
A_B_C
D_E_F
G_H_I
[code].....
Actual problem: I need to write a shell script which can give me difference character by character not by line (using comm)
Can anybody suggest what are the resource usage requirements for xubuntu + kdevelop memory wise and processor.
as i am looking for installing in this system xubuntu + kdevelop on a system p4+ 256MB ddr1
do you think this will smooth
application to monitor application wise network usage?
View 3 Replies View RelatedMy question is how to block a subdomain of a site. To make it as clear as possible, I'll give an example. I am regularly entering this arbitrary site [URL] which redirects me to this page [URL] and this index.html takes an image from a subdomain which is a subfolder of itself, that is: [URL]. What I am asking is blocking the images to be taken, but not the main page itself, i.e. to block www.somesite.abc/images/ without blocking the overall www.somesite.abc.
My idea was to use the /etc/hosts file by redirecting to loopback address:
Code:
127.0.0.1 www.somesite.abc/images
But it looks as if it doesn't affect things at all. Should I use it another way? Modifying /etc/hosts.deny maybe useful?
I am having a web server (apache) and 3 sites are hosted in it, named as www.web1.com,www.web2.com and www.web3.com.
I need to restrict www.web2.com to Internet users and allow only to local network. At same time I need to allow www.web1.com and www.web3.com to both Internet and LAN users.
I have noticed interesting problem. I use two browsers - Firefox and Konqueror. Konqueror is configured to use tor, Firefox not. Using Gufw I block all incoming and outgoing traffic and it works while using Firefox, I mean that I can't view any www site and it is ok. But if I use Konqueror I can establish any conection. How to understand this? Should I have different firewall while using tor?
View 5 Replies View RelatedI manage a linux-based network, where some projects are currently under development. Our IT policy states that any email attachment shall be encrypted using GPG. Can I block other attachments using a firewall?
Note: Currently our mail server is not in campus. So I can only use a firewall for this security issue.
I launched my website. At the moment the site has an firewall (iptables) enabled with very simple rules. All incoming traffic is blocked, except for the ports http and ssh. Everything is working perfect, but I want also to be able to block certain kinds of attacks. There are some really good examples on the internet, but I don't now if they contain all kinds of attacks which are relevant to my situation. To be clear, I only server web content through port 80 and use ssh to remote login.
View 3 Replies View RelatedFor the last four days, I have been getting HIDS alerts like these:
Code:
152.2.x.x - - [15/Feb/2011:04:28:59 -0500] "PROPFIND /C%24.co HTTP/1.1" 405 231
152.2.x.x - - [15/Feb/2011:04:28:59 -0500] "PROPFIND /C%24.com HTTP/1.1" 405 232
[code]....
I want to have a firewall that is connected to my modem and router and have it function as just a firewall no dhcp no routing is that possible?
View 3 Replies View RelatedI get all my traffic from my router, as this computer seldom moves. So is there a use for a firewall?I am not sure, because when I scan my IP address with nmap, no matter what the changes I make in the firewall, it is always the same scan...cannot fingerprint OS...and all closed ports.The all closed ports thing only changes when i torrent, then i get a wide open port.
View 14 Replies View RelatedI am trying to setup a firewall using Centos 5.5. The machine has 2 NICs, one connecting to the ISP/Modem and the other connected to a DIR-655 wireless router. The nic is connecting to the internet port on the router.
I do not want DHCP on the Firewall machine but on the wireless router.
[ISP/Modem]<--->[machine eth0]<--->[machine eht1]<--->[DIR-655 internet port]
IP from ISP Dynamic 192.168.1.1 192.168.1.2
IP's on the DIR-655 LAN will be 124.168.0.0/24 network lets say.
I have setup routes on the eth0 192.168.0.0/24 and 124.168.0.0/24
and added 124.168.0.0/24 to eth1.
I can ping eth0 and eth1 but cannot ping 192.168.1.2.
this setup is not actually connected to the internet so I disabled iptables to try testing the ping and still no good.
There are routers with firewalls which you cannot configure - you just use those routers and get some protection from Internet attacks. Is it possible to configure iptables on GNU/Linux machine so that you'll get better protection than the protection you get from those kind of routers?
View 4 Replies View RelatedIn an effort to learn more about firewalls and iptables I have left behind gui set-up tools and have setup a firewall using iptables that logs to its own file. The firewall is as follows:
Code:
*filter
:INPUT DROP [0:0]
:FORWARD DROP [0:0]
:OUTPUT ACCEPT [0:0]
:TCP - [0:0]
[Code]...
Within the documentation of example OpenVPN setups there is a setup that shows an OpenVPN Server with two network interfaces. One interfaces is plugged into the public internet network and the second interface is plugged into the private network.
Normally I assume that it would be best to place the OpenVPN system inside the network behind the router and firewall and open only the ports needed on the router to allow access to the OpenVPN system. All other router ports would be closed. This is the first example they show. To see what I am talking about see page(s) 6-7 here -> [URL]
If one were to use the two interface public facing setup, when would that setup best be justified? I guess if you didn't want to open any ports on the router/firewall then this could be justified but then you have to lock down this public system individually instead of having it protected by the network firewall.
Maybe a site-to-site Ouija board connection.
View 5 Replies View RelatedI am using Squid as a proxy server red hat Linux.I want to block some specific web sites like facebook,..... under squid .Please guide me that how can i do it and under which header should i write the script ?
View 14 Replies View RelatedI'm trying to block a site for a certain time.How to Block(deny) perticuler website in certain times of the day , by using squid ? and it seemed promising.I added the lines to my squid.conf
acl office_time time MTWHF 3:00-21:00
acl bad url_regex "/etc/squid/block.acl
http_access deny bad !office_time
created a block.acl in the same directory and restarted it.
How can I block access to a certain internet site using ufw? Let's say I want to block access to www.xxx.zzz (IP 1.2.3.4) to any program and user; using iptables I can do
sudo iptables -A OUTPUT -d 1.2.3.4 -j DROP how can I do that using ufw? if ufw can not do this, where should I put this rule to persist it over reboot, without interfering with ufw chains infrastructure?
Can we use iptables as firewall instead of Juniper firewall
View 2 Replies View RelatedIs it possible to setup apache to normally block an IP from accessing a site until that IP is in a database/file?More or less, I need a login system that another script can add/remove the IPs and the site can be accessed by only those IPs.
View 1 Replies View Related