Advertisement

Experts have come up with some helpful tips for getting a solution to your problem fast.

 

Welcome! If you have any general questions about Experts Exchange, feel free to ask me.

 
Time Tested Linux Network Security Solutions: 201 - 225 of 308
 
In slackware 9 when i look at the salt in the passwords (first 2 chars) it is $1. Is this actually the valid salt or am I missing something?
I have recently setup a new linux machine running Red Hat Linux. This machine is located on two network with eth0 being an internal/private network and eth1 being external. I was wondering if ...
I'm getting an error - "server certificate expired", which I'm assuming means I need to replace the security certificate. 1.  Who can I get a free certificate from?  This isn't a commercial...
I have fail2ban install protecting my vsftpd server.  Occasionally someone tries to get in and a hostname instead of an IP is shown in the secure log.  This pretty much gets ignored by fail2ba...
hi, i'd like to forward the lpr print port 515, but to do that i always have to login as root since the openssh server on my debian machine forbids normal users to forward remote ports lower ...
Can anyone give me the correct layout for the iptables.conf file? I want to configure iptables to allow the following services ONLY to a specific subnet and a single additional specific IP ...
Greeting Friends, We just got this camera.  It takes snapshots ever few seconds, and has uclinux embedded. The documentation in numerous places strongly recommends using FTP (or numerous...
Hi, This is a question related to "TCP: Treason uncloaked!:"  at http://www.experts-exchange.com/Security/Linux_Security/Q_20788430.html#10461075 I have a warning :TCP: Treason uncloa...
I had an attack on my box a few days ago and the attacker I believe was blocked but has caused a problem in my iptables so now every time the box is restarted I get this error after APF loads....
Hi All, I am currently documenting all the Nessus Server/Client preferences we are allowed to use, the different settings for each and the effects of changing each setting.  I have complete...
Is there a way to get a complete list of SELinux types from a running system? I see a list of types at:    /etc/selinux/targeted/contexts/customizable_types but there are only 26 types l...
Hi I'm writing an iptables script on on Debian Woody (2.4.26-1um) which attempts to load two kernel modules. modprobe ip_tables modprobe ip_conntrack_ftp The script fails at this poi...
hello i want to redirect some of the http connections coming from internet to our apache server located  in our DMZ to the app server - running under apache/php- located in our LAN. our fi...
hello, should an application userid (e.g. an ftp user id) be allowed to login to the shell? Would it really need that privilege?  The way I see it, is this is an opportunity for an attacker...
My developer accidently typed in chmod -R 777 /etc Is there way of recovering so i dont have to reinstall.
I have discovered that there is message log in the server. Jan 28 01:56:45 ipvpn039065 vsftpd(pam_unix)[9347]: check pass; user unknown Jan 28 01:56:45 ipvpn039065 vsftpd(pam_unix)[9347]: ...
Hi, I manage to install new pgp rpm into Linux box version 6.5. I encrypt a file with receipent user id and sent the encrypted file together with my public key. The receipient can dec...
Hi, I am experiencing a security problem on redhat 8.0 it seems like my server is "opening a connection" to an IP address from tcp port 7700 and then bandwitdh usage is going very high. ...
I am a new user to pf and have a very basic setup, I have two concerns being ssh and http. I have to leave root login enabled so that I may access my web host manager. What I would like to do ...
I have a RH9 box running squid for caching. I want to have a web content filter based on either URL or content. If possible, I would love to avoid installing any additional program with squid....
1:55:37.771157 IP 192.168.1.1.domain > linux.site.hpvmmdata:  11366 ServFail 0/0/0 (45) 21:55:37.771290 IP linux.site.hpvmmdata > 192.168.1.1.domain:  11366+ PTR? 80.251.218.216.in-addr.arp...
Hi! I have just noticed that my server has been hacked. I'm hoping someone can help and assist with the damage assessment/control. It started with an e-mail I received, which led me to sear...
I was restoring my laptop from a backed up disk image sitting on my server.  I was using a combination of dd and netcat to restore the image to my laptop's hard disk.  I accidentaly used "of=i...
Dear experts. I'm configuring a Linux based router, and stuck somehow. Please help. The router connects two segments, say INTERNAL and EXTERNAL. I run zebra in that router for dynamic r...
I have an IP addressable device that I want to put on the corporate network, but I need to give security info to the IT department about it, in particular what ports are open. Unfortunately th...