The Little Geeni

Plenty of viruses are being found in the wild all the time and the speed of affect these viruses on the computer increasing continuously. That’s not a issue to be identified these viruses by an PC Experts but we should take precautions before handling them and of course should avail Online Computer Repair Services to resolve your problems and not to try any specified software at all or, perhaps worse, the antivirus software or virus definitions database may be out of date. If you would like to get rid off from virus problems then avail the best Online Tech Support Services with unmatched price and offers.

“Various Types of viruses are being found in the web-space all the time and they spread and multiply very rapidly in the computers of users. Noticing them and recognizing them alone is not sufficient. You need to have specialized help to actually remove and clear your system from such threats. Users are finding Online Computer Repair services to be the easy way to resolve all types of virus problems instead of downloading any outdated or pirated software that might affect your PC’s performance.”

Privacy protection for the personal data of the user is the key at home and office and securing your company data is not negotiable. So build your security arsenal with Online Technical Support. Spywares and Adwares is the most common programs spread on the internet that will spy on user’s activities and as well on the market research.

Privacy protection for the personal data of the user is the key at home and office and securing your company data is not negotiable. So build your security arsenal with Online Technical Support. Viruses and Trojans are the most common programs spread on the internet that will spy on user’s activities and as well on the market research.

Virus, a kind of malicious software and hazardous to the health of your computer, is written intentionally to harm and/or steel your personal information without the permission of the user. Most viruses replicate with others and can cause a severe harm to your computer. There is no far explanation that everyone needs to safe their computers from viruses by taking Remote PC Help. Logic bombs go undetected until launched, and the results can be destructive.

Even with the safeguards, it’s still a good idea for most peoples to have PC Tech Support to get your computer free from these threats. Various types of Online PC Repair services are available to detect your PC problems and provide an effective solution to the user’s the satisfactory level.

Troubleshooting against, Protect, viruses

Providing security against email related threats has become a burden for most IT professionals in 2006. According to a recent study by Postini, spam and email viruses now make up to 80% of all emails sent out as compared to 50% in 2000. As a result, IT professionals now face a tougher challenge in providing network security for this amount of spam. IT professionals also have the disadvantage of defending against new forms of email threats such as spam zombies, directory harvest attacks, mass mailing trojans, as well as the latest email virus.

In this article, I have listed the seven most effective spam fighting tips for organizations with in-house mail servers. These seven tips are proven techniques I have used for my customers, partners and associates who wish to tighten their perimeter (network) security.

Firewall:
A firewall is your first line of defense against hackers, crackers, and spammers. Without a firewall, your network is a disaster waiting to happen and could give any novice hacker free reign over your network. If your organization has multiple Internet users, this tool is essential for securing your network.

Block Port 25:
On your firewall, allow outbound traffic on TCP port 25 for all mail servers. Block traffic on outbound TCP port 25 for all other computers and servers. On the Internet, TCP port 25 is used for email traffic through SMTP (Simple Mail Transport Protocol). Blocking this port is a good security practice and prevents mass mailing worms and spam zombies from sending mail from your users’ computers.

Managed Email Filtering:
Consider using a managed filtering solution such as Postini, Brightmail, or SpamSoap. Managed Email Filtering services quarantine spam, viruses, and email threats before reaching the email servers on your network. In comparison to desktop filters and server appliances, managed filtering services provide superior perimeter (network) protection by preventing delivery of spam and viruses to your network and servers.

Check Relay Setting:
A mail server’s relay setting controls which computers and servers are able to send SMTP email on your organization’s behalf. Check your settings and limit the IP address range to email users on your local network. Some mail servers have settings to limit email relay through authentication. If authentication-based relay is available, setup and configure it too. NOTE: If the relay is not set properly, spammers will be able to send email from your mail server. This exploit is commonly known as an “Open Relay” or a “Spam Relay.” Use the Open Relay test at http://www.abuse.net/relay.htm to check if spammers can relay mail from your server.

Black Lists:
Setup your mail server(s) with a black list. A black list (black hole list) is a database or listing of known spam sources. Most modern email servers can be configured to query inbound email against online blacklists. Messages originating from these sources can then be blocked. I recommend configuring your email server with SpamHaus blacklist. Spamhaus.org is an excellent free service to use. Some other good blacklists are DBSL and SpamCop.

Reverse DNS:
Reverse DNS (rDNS) associates an IP Address with a Domain Name. Most mail servers, as an anti-spam feature, often use a reverse DNS lookup to compare an email address domain name with its IP address. If the IP address found from the rDNS lookup does not match the domain name, it is probably spam. If you haven’t done so, setup and configure reverse DNS records on your DNS server.

Anti-Virus Scan:
There are many tools that provide adequate anti-virus protection for desktops at the workplace. Most anti-virus software is good at detecting viral threats that proliferate email spam such as mass mailing worms, trojans, and directory harvesters. Large organizations might want to use enterprise anti-spam software with management and monitoring tools that will allow tracking of network virus outbreaks.

Recommended Links:
- http://www.spam-x.com [Postini service - managed filtering, 1 to 500 users]
- http://www.postini.com [Postini service - managed filtering, 500+ users]
- http://www.spamhaus.org [Blacklist]
- http://www.dbsl.org [Blacklist]
- http://www.spamcop.net [Blacklist]
- http://www.abuse.net/relay.htm [Open relay test]
- http://www.dnsreport.com [DNS report/open relay test]
- http://www.dnsstuff.com [Spam database lookup and open relay test]
- http://www.cnn.com/2004/TECH/ptech/02/17/spam.zombies.ap [Spam Zombie Article]

Email viruses and related threats delivered through spam have cost businesses billions of dollars in expenses and lost productivity. Each spam email sent or received from your domain costs your organization money and bandwidth. By implementing these seven tips, your organization can reduce spam and recover costs.

This article: © Copyright 2006 Todd Green and free for republishing.

Computer Security email, From, Network, organization´s, securing, Seven, spam, Tips, viruses

If you’re connected to the Internet (especially with an “always on” connection such as cable or DSL), you’re at risk for intrusion from hackers or with infection from a virus or spyware. This can happen without your knowledge. You can be browsing, logging on and off various web sites, etc., and be compromised. However, you can protect yourself from this type of intrusion by following a few simple steps.

1.. Use a firewall to block all incoming connections from the Internet to services that should not be publicly available. By default, you should deny all incoming connections and only allow services you explicitly want to offer to the outside world.

2.. Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers. This helps to prevent or limit damage when a computer is compromised.
3.. Ensure that programs and users of the computer use the lowest level of privileges necessary to complete a task. When prompted for a root or UAC password, ensure that the program asking for administration-level access is a legitimate application.

4.. Disable AutoPlay to prevent the automatic launching of executable files on network and removable drives, and disconnect the drives when not required. If write access is not required, enable read-only mode if the option is available.

5.. Turn off file sharing if not needed. If file sharing is required, use ACLs and password protection to limit access. Disable anonymous access to shared folders. Grant access only to user accounts with strong passwords to folders that must be shared.

6.. Turn off and remove unnecessary services. By default, many operating systems install auxiliary services that are not critical. These services are avenues of attack. If they are removed, threats have less avenues of attack.

7.. If a threat exploits one or more network services, disable, or block access to, those services until a patch is applied.

8.. Configure your email server to block or remove email that contains file attachments that are commonly used to spread threats, such as .vbs, .bat, .exe, .pif and .scr files.

9.. Isolate compromised computers quickly to prevent threats from spreading further. Perform a forensic analysis and restore the computers using trusted media.

10.. Train employees not to open attachments unless they are expecting them. Also, do not execute software that is downloaded from the Internet unless it has been scanned for viruses. Simply visiting a compromised Web site can cause infection if certain browser vulnerabilities are not patched.

When it comes to doing business online, security is a two-way street. Safe online transactions demand smart behavior on the part of consumers and proactive security policies and procedures on the part of Web sites.

Businesses that sell goods or services online also have a responsibility to keep their transactions secure and private. And the more sites know about current e-commerce security threats, the better job they can do at protecting their transactions. Your browser should comply with industry security standards, such as SSL Certificate. SSL(Secure Socket Layer) is a security Protocol.

Computer Security From, hackers, keep, Network, Points, Safe, Secure, viruses