I need to create two Access Control Lists for my networks using SQUID proxy. The ip address range from 18.104.22.168 to 22.214.171.124 for one network and from 126.96.36.199 to 188.8.131.52 for another network. How can I make it?
I need to block mac address in my network then i foolowed as below acl's but am getting output as follows I tried as in /etc/squid/squid.conf acl block arp aa:aa:yy:yy:xx:xx http_access deny block but it give me error as like: - (This is the output of # squid -k parse) aclParseAclLine: Invalid ACL type 'arp' FATAL: Bungled squid.conf line 1234: acl block arp aa:aa:yy:yy:xx:xx squid Cache (Version 2.5.STABLE6): Terminated abnormally.
I need your help for a problem that it's happening in my customer. What I need is to change the configuration of a proxy, configured on Linux Cent OS v 4.3( explanation - see below) .My squid configuration's file it's like this:
I hv Cent OS 5.3 installed as server. I hv a network of approx 100 desktops and laptops. For a security purpose i want to block certain laptops from gaining a the network access using dhcp. Can we block the ip address leasing if a specific MAC address request for a ip lease?
Im trying to setup dhcpd to put certain systems witch have mac address starting with 08:00:* in a certain ip class. How can this be done?So any system with mac address starting with 08:00 to get an ip from this range 192.168.12.2-192.168.12.99.
(98)Address already in use: make_sock: could not bind to address 0.0.0.0:80 no listening sockets available, shutting down. Unable to open logs
I am new to apache2 server i have been trying to start the server using the default httpd.conf file provided in the source code but when i give the following command sudo /usr/local/apache/bin/apachectl start i receive the above error and the server shuts down.
I installed the Centos 5.5 and after the Xen. After I put a virtual machine named VM01.Initially it worked properly, I tried everything and it worked.When rebooted, I had problems with the network.I have two network cards eth0 and eth1, but eth1 does not have any ip and I use only eth0.The error that appears is:
vif0.0: received packet with own address the source address
but it give me error as like: - (This is the output of # squid -k parse) aclParseAclLine: Invalid ACL type 'arp' FATAL: Bungled squid.conf line 1234: acl block arp 00:13:45:d3: 24:e4 squid Cache (Version 2.5.STABLE6) : Terminated abnormally
I would like to ask some help and tutorial for setting up and how to configure squid proxy server in my (Home PC Server). I am a newbie in Linux Centos. I already installed in my system the CentOS 5.5 . Now, I want to configure it as my internet server, all of my 4 system running in Windows including the laptop I want to connect through my CentOS pc with username authentication. I assign all IP address by static. see tthe attachement in my set up. [url] I just want to know what I need to change and add in my squid config file. And how can I configure properly my CentOS with 2 LAN card as internet server.
I'm trying the tail -f 172.16.X.XX /var/log/squid/access.log to view the sites requested by the client ip 172.16.X.XX but the result is it still open all the ip's requesting for the internet access. is there any tail commands that can monitor only the specific IP address requesting for internet access.
I running Squid 2.7. I using NCSA veryfication so only registered users may use proxy server. I want to allow only 1 connection to proxy for 1 user. Why not per ip ? Alot of users have dynamic IP's and i want to avoid password sharing beetween users. Any idea how to do it in squid ? Mb other autentyfication system connected to squid granting access to proxy server ?
I have got squid 3.0 stable 13 installed on a new centos5 box .I have used it on other centos5 ones and it has worked really well.It didnt give any error messages during installation on this one until i used the proxies in the browser.I have used it on other centos5 ones and it has worked really well.But with this box I am getting this error in browser-The following error was encountered while trying to retrieve the URL:Yahoo!Socket FailureThe system returned: (99) Cannot assign requested addressSquid is unable to create a TCP socket, presumably due to excessive load. Please retry your request.I have tried many options for http_port but to no avail.I have never seen this error before with and am totally clueless
I had had my internet connection working using PPPoE, but after I did some tweaking and configuring on the machine (configuring Samba), I wasn't able to connect to the internet and on the syslog said:Code:Cannot determine ethernet address for proxy ARPI'm using dynamic IP address on my internet account. Is this problem related to Samba server configuration that is running?
while configuring the yum through proxy i was configures with some address(10.x.x.x). after the proxy address has been changed(172.x.x.x).according to new proxy address i made changes in all locations in my system. but when i am trying to download through command line still it is trying to connect old proxy address(10.x.x.x). finally i come to know that, still some location old proxy address (10.x.x.x).is there.
how to troubleshoot this issue.(how to find the location) i was try to debug find the output below DEBUG output created by Wget 1.11.4 Red Hat modified on linux-gnu.
I have a local proxy server running on my computer, but I want to add a twist to it. I have multiple connections going through the proxy, but what I'd like to is that all outgoing connections Mac Address' will be different from the one the connecting systems. Mask or even alter them, if possible.
Yes, I know the idea itself sounds weird, but I'm attempting a few ideas for a project I'm working and I ran in to this problem. Please note that it's impossible for me to change the MAC Address' on the systems connecting through the proxy (they're gaming consoles, to be specific.)
I'm currently running the latest version of Ubuntu.
Im an academic (university networks and security lecturer) studying/teaching network and operating system security, and inspired by the work of Hovav Shacham set about testing ASLR on linux. Principley I did this by performing a brute force buffer overflow attack on Fedora 10 and Ubuntu 9. I did this by writting a little concurrent server daemon which accidently on purpose didnt do bounds checking.
I then wrote a client to send it a malicious string brute forcing guessed addresses which caused a return-to-libc to the function usleep with a parameter of 16m causing a delay of 16 seconds as laid out in [URL] Once I hit the delay I new I had found the function and could calculate delta_mmap allowing me to create a standard chained ret-to-libc attack. All of that works fine. However .... To complete my understanding I am trying establish where I can find the standard base address for ubuntu 9 (and other distros) for the following, taken from Shacham:-
/proc/uid/maps gives me some information but not the base address ldd also gives me the randomised starting address for sections in the user address space but neither gives me the base address. Intrestingly ... when a run ldd with aslr on for over (about) 100 times and checked the start point of libc I determined that the last 3 (least significant) hex digits were always 0's and the fist 4 (most significant) where between 0xB7D7 and 0xB7F9. To me this indicated that bits 22-31 were fixed and bits 12-21 were randomized with bits 11-0 fixed. Although even that doesnt define the boundaries observed correctly.
Note: I am replicating the attack to provide signatures to detect it using IDS, and for teaching purposes. I am NOT a hacker and if needed to could reply from my .ac.uk email address as verification.
Currently my OS is Ubuntu 9.04 Jaunty Jackalope Desktop OS and my web server is Apache2. I have a public address 60.x.y.z and my pc local address is 10.x.y.z. I have a web app in my Apache2 which currently run in localhost(10.x.y.z).
I would like to enable the web app so that it could be browse from outside. I know there maybe some port forwarding process and some commands involved in order to do that. But I have no idea on the steps to do that.
I am working on implementing a protocol on NS2.34 .I really need help to solve this problem . Actually , I don't now whether the problem is generated by the tcl code or the c++ code when I run the simulation, I get this result :
Code: num_nodes is set 64 INITIALIZE THE LIST xListHead 34 45 channel.cc:sendUp - Calc highestAntennaZ_ and distCST_ highestAntennaZ_ = 1.5, distCST_ = 550.0 SORTING LISTS ...DONE! code....
I want to pass ip address,port address and some parameters from command line using python script.The ip address and port address for establishing socket connection and remaining parameters to execute different connection.