I was looking for a way to protect my samba server for limiting access to certain domains.Can I use the parameterhosts allow = example.comor something like that or is there another way to do the job for domains
View 4 RepliesI've recently been running a game server from my desktop, as well as a web page to accompany it.I use the ports 80/8123(HTTP)/5900(VNC)/50500(GAME)/5839(ADMINISTRATION).What's the best solution to protect my server from security threats? On a side note, I plan on adding a MySQL server later, but I want to keep it local only.
View 9 Replies View RelatedThis might sound really stupid, so you'll all have to excuse my lacking knowledge. I read that USB attacks get more and more common, like putting in an USB stick with a malicious autorun script on it, and it's game over. Can AppArmor protect devices and limit their access to the file system?
View 5 Replies View RelatedMy server listens to POP3/IMAP requests. Some users have configured their mailers with high checking frequencies, say once every minute, such that the system logs are full of entries with no significance at all.I'd like to ask if there is a way to limit the per IP frequency of POP3/IMAP access ?I'm using "xinetd" to wrap the "ipop3d" and "imapd" which come with the Alpine package.
View 4 Replies View RelatedI am facing problem on my Linux server, those runing php sites, most of the time hacker upload file in my website and take the control, and hack the sites, shoot the thousands of mail etc
View 7 Replies View RelatedI have just configured Centos 5.5 LocalMailServer with fetchmail and sendmail , Proxy with Squid and FileServer with samba. Now my concern is security.. How can i protect my server with outside attack. Will I need to block some ports or I need special tools or script so no one from outside can attack my machine. My machine is working on intranet with local ip only.. No web server or static ip exists. Machine is connected with ADSL router to access internet.
View 5 Replies View RelatedI run a few sendmail servers that run MailScanner/Spamassassin/sendmail (current versions) on Centos 5.4 and Centos 4.8 These boxes accept mail for a large number of domains (6000+) scan the mail removing spam and then forward the ham to another server for delivery. I am attempting to stop any backscatter that these servers cause by only accepting mail for specific users@domain or for domains with a catch-all account.I currently use /etc/ mail/ access.db as the access map for the domains, but this allows all mail to be accepted for the domain before the attempting to send it on for final delivery which causes NDR and backscatter for those domains which do not have a catch-all account.
I have looked at adding "To:user@domain RELAY" to the access mapand also adding "define(`_RELAY_FULL_ADDR_', `1') " in the sendmail.mc and running make -C /etc/mail but this has no effect on the sendmail.cf file. My understanding is that if I can get sendmail to accept this undocumented feature then all will be fine as I will be able to use the access map to allow mail to those specific users as well as entries of the type "domain RELAY".My second question is: Does anyone have any ideas on how to utilise access map and relay-domains to achieve the same thing?
I would like to configure an access to folder
/fileserver
for two services : Samba and VSFTPD
How to do it ? How to create folder rights that samba and ftp user will have an access (read/write/delete) to all directories in /fileserver.
My system is CentOS. I`m starting samba and vsftpd like a root (/etc/init.d/vsftpd start etc.)
I'd like to discourage the SSH bots that try to log into my system (CentOSv5), and among other things, I've changed my SSH port to someting other than 22. As well, I've been playing around with the idea of some iptables rules (note port 22 is used here as example):
Code:
# Allow SSH with a rate limit
iptables -A INPUT -i ppp0 -p tcp --syn --dport 22 -m hashlimit --hashlimit 15/hour --hashlimit-burst 3 --hashlimit-htable-expire 600000 --hashlimit-mode srcip --hashlimit-name ssh -j ACCEPT
iptables -A INPUT -i ppp0 -p tcp --syn --dport 22 -j LOG --log-prefix "[DROPPED SSH]: "
iptables -A INPUT -i ppp0 -p tcp --syn --dport 22 -j DROP
I am *NOT* an iptables expert. What do you all think about the above code snip?
I've been running a Samba server under RedHat 8 for five years without a hiccup. I want to cut over to a F10 box but cannot get shares accessible. smbclient attempts fail over NT password error. SELinux is disabled. Server is visible on the network. Users require no password access to shared data.
smb.conf follows:
# Samba config file created using SWAT
# from UNKNOWN (>)
# Date: 2009/06/12 14:15:15
[code]....
it's driving me nuts. Done a few things now, including this last: [URL]that didn't work. All the other comps in the house are windows 7, and I want this box to be my file server, with two 1 TB HDD plugged into it via USB, but I can't get the damn samba to allow access to everyone. Here's the path in the config file:
[data]
comment = Test sharing
path = /media/Shared
[code]....
I have a CentOS 5 server in which I use Virtual Hosting and each domain has its own user/pass for login to upload files. The path is /var/www/vhosts/domain name]/httpdocs/What im attempting is setting up the creation of the [domain name] folder from an administration backend under PHP, which I am developing. What Im worried about is if I allow PHP to run command line commands such as mkdir, then what is stopping anyone from doing the same from their php files on my server??? What is the best way to properly setup my server to allow automated creation of the domain structure within my folder system
View 3 Replies View RelatedOn our web server I want to have a WebDAV folder and I would like customers to be able to log in with MySQL authentication from our customers database (this I have set up with no problems and it works fine). HOWEVER, I want each customer to have their own subfolder and, having logged in with access to the main WebDAV folder, I want each customer ONLY to be able to access their own subfolder(s). I don't mind them seeing other subfolders exist but obviously I don't want them to have access to other customers subfolders.
OK, of course I could achieve this by adding new WebDAV locations to the httpd.conf for every customer but with a large number of customers httpd.conf will become very large and messy. I have tried applying further restrictions by putting an .httaccess file in each subfolder but that doesn't work - indeed the presence of a .htaccess file oddly prevents users from seeing any other files in the subfolder but has no effect on the access.
I see on my webserver some logs as follows Quote:
203.252.157.98 - :25:02 "GET //phpmyadmin/ HTTP/1.1" 404 393 "-" "Made by ZmEu @ WhiteHat Team - www.whitehat.ro"
203.252.157.98 - :25:03 "GET //phpMyAdmin/ HTTP/1.1" 404 394 "-" "Made by ZmEu @
[code]....
I just created new user account, but the new user is able to access all the directories structure (including other's home directories).I'd like to limit the user to access ONLY his home directory (and nothing "above"). How do I do this?
View 1 Replies View RelatedI have a server with a /data/ directory, everything in the /data/ folder has "-rwxrw-rw- 1 root root" permissions.all works fine, multiple users are mounting this over a lan and everyone is able to modify files. However I would like to be able to access the /data/music/ directory from the internet.
Is it possible to configure sshfs to only accept logins from a user restricted to reading the /data/music directory, or would it be possible to tunnel nfs over ssh in such a way that everyone on the lan 192.168.0.xxx has unrestricted access to the data directory, but something coming from outside only has read access to the music directory. Although is one were tunneling nfs over ssh, the nfs mount request would appear to come from the server itself. The router is at 192.168.0.1 and the server is at 192.168.0.3.This Seems very much like what I want to do, however I'm having a bit of trouble getting this to work well with other users mounting with full rights over the lan too.
I have successfully deploy/configured the Ubuntu PDC and connected Windows XP too. Its all working fine.. but now I wana to connnect Ubuntu Desktop to same Ubuntu PDC. I have changes in SAMBA, as per required for joining Domain and execute the <net join MyDomain -u root> to its all fine. No error. But How to Login? On startup there is nothing like option for selecting Domain or Workgroup..
View 9 Replies View RelatedI would like to know how to protect networks against VPN attacks? How does big industries do it? What does the government tend to use? Are any tools open source that I may get?
View 1 Replies View RelatedI was wondering if firestarter (software firewall) works out of the box or does it need some kind of configuration in order for it to provide protection? Is firestarter even needed with ubuntu?
View 6 Replies View RelatedI am using RHEL5 in that i have installed samba rpm as well as created samba users while access the shared folders in WINDOWS i got "access dined" error.
View 1 Replies View RelatedI create music and usually gets sold world wide. I have some distributors that have been able to access a private server and get the new tunes I make to download via ftp. Well that server is getting full and I was trying to create another directory on my website itself.I created the directory. made the ".htaccess" file. Then I tried to make the htpasswd file but my server just keeps saying no command by that name.
View 8 Replies View RelatedI want to start using videos/music files downloaded from untrusted sources (BT,Sharing Forums, etc.). Haven't made this a habit b4 because of the security risks. I want to take steps to reduce the risk & protect my computer from anything malicious. What are some good choices for this? The biggest step I took so far is using Ubuntu since it's very virus resistant, but other threats do exist out there (rootkits, malicious scripts, etc.). When downloading files from untrusted sources, who knows what may be hidden inside.Some options I'm thinking about:
1) Using a VM (with Ubuntu installed inside) & playing the files inside the VM. If anything malicious happen, it would be trapped inside & I could easily revert to a clean snapshot.
2) Using AppArmor to restrict what the files or program used to play the files can/can't do. AA seems very complicated though.
Are the above overkill? Would it be sufficient enough to just open these files on a non-admin user account since no access to root or sudo?
I am planning a trip for a few days and I will be staying at an inn with Wifi access. All the guests are allowed to use it. A friend of mine has been there, he told me there are several other private spots around the house, i.e. lots of other people using Wifi. My friend told me the inn uses WEP, so who knows how many times their access point has been hacked and accessed without permission...
My concern is that I will be there for a few days with my notebook, I will have to work once in a while, connected to the Internet. Is there some precaution I should take to protect my notebook from intruders? Is it advisable to install a firewall in my notebook (iptables?) or am I just overreacting? Is it possible for one of the guests or neighbors to break into my notebook?
I am currently running Lucid 10.04(lts) on a dual boot with windows xp. What i am looking for is some guidance on how to re-install the requirement for a password when trying to mount the xp partition as this was standard in Jaunty and i liked it like that as my computer is often open for many hours at work. Yeh i know i can lock the screen but sometimes other people need to use my computer.
View 6 Replies View RelatedI have previously set up sudo via adding my name to the wheel group and then giving full privileges to the wheel group in the sudoers file. Now I choose to learn to limit that. Had noticed the most frequent use I have of sudo is to run yum update. This got me thinking, could I remove the wheel group privileges and add the following line in sudoers to limit the privilege to simply running yum, and furthermore, make it so I could run yum without a password:
## Allow root to run any commands anywhere
rootALL=(ALL) ALL
Troy ALL= NOPASSWD: /usr/bin/yum
I think that would in fact work (if I understood one of the pages here, it will work). However, upon further thinking I realized that in such a case then anyone sitting at my computer could then use yum, without a password, to install or remove any file on my system � probably not a good idea. As a result I have to ask, can I tighten the privilege even further such that the only privilege so given was to run �yum update� and nothing else? (for example if they ran �yum install� it would fail). If you can do it, how?
Last, I was going to limit the privilege, time wise and try wise, by adding the following to the sudoers file:
# Defaults specification
Defaults:Troy timestamp_timeout=0, passwd_tries=3
Will that really work to limit the elevated privilege so I don't have elevated privileges lingering about, or is there a better way to do so?
are there any programs that will protect my computer on the Internet. Just started using fed 10 from windows so i am not sure what i need to do. I am using an acer aspire 5630 laptop.
View 1 Replies View RelatedI was wondering how to password protect certain file folders?
View 6 Replies View Relatedim currently trying to configure SE Linux policy for a folder so that only my user with root privileges can access it and not just root but i don't know the commend to run on the folder to change its permissions
View 4 Replies View RelatedI want to password protect evolution. How would I do that? I want to allow anyone to access all my other software, but my business email needs to be privateMy current solution seems to be to setup another account. But all the user switching and other what not seems a little much for one program.
View 2 Replies View RelatedI've already read and tested the various guides for pasword portecting the menu items. What I need is a little bit different. I need to protect the whole boot menu so normal users cannot select any entry at all and only let the default entry boot.
View 4 Replies View Related