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March 16, 2009
Today’s log tip is a case of a non-obvious, but valuable, use of log collection. Web server logs provide lots of good information for web developers; today we look at some of the interesting information contained in 404 errors.
March 12, 2009
Overcoming the blind spot of mobile computing For many organizations, mobile computing has become a strategic approach to improve productivity for sales professionals, knowledge workers and field personnel. As a result, the Internet has become an extension of the corporate network. Mobile and remote workers use the Internet as the means to access applications and resources that previously were only available to “in-house” users – those who are directly connected to the corporate network.
March 11, 2009
Today we look at monitoring server shutdowns. Typically I would recommend that you set up an alert from your log management solution that immediately alerts you if any critical production server is shutdown or restarted, but even for non-critical servers it is wise to check on occasion what is going on. I do it on a weekly basis — servers shutting down can happen normally (win update, maintenance, etc), but can also indicate crashes and instability in the machine or someone simply screwing around; and by eyeballing a short report (it should be short) you will be able to quickly see any odd patterns.
March 04, 2009
Today we use logs to do a relatively easy check for unusual activity – in this case after hours log-ons. If your organization is mostly day shift, for example, your typical users will not be logging in after hours and if they are this is something worth checking out. This kind of simple analysis is a quick and easy way to look for unusual patterns of activity that could indicate a security problem.
February 27, 2009
Today’s use case is a good one. Windows makes it very hard and resource expensive to track file deletes, but there are certain directories (like in our case, our price and sales quote folders), where files should not be deleted from. Making use of Object Access Auditing and a good log analysis solution you can pull a lot of valuable information from the logs that indicate unwarranted file deletions.
– By Ananth
February 25, 2009
The Merriam Webster dictionary defines a log as “a record of performance, events, or day-to-day activities”. Though we think of logs in the IT context, over the years many famous logs have been written. Here are some of my favorites:
Dr Watson who logged the cases of Sherlock Holmes
The Journals of Lewis and Clark, one of the greatest voyages of discovery in human history.
The Motorcycle Diaries: Notes on a Latin American Journey
Fictional Prof. Pierre Arronax chronicled the fantastic travels of Capt. Nemo in Jules Vernes’ 20,000 Leagues Under the Sea
Diary of a Young Girl by Anne Frank, a vivid, insightful journal and one of the most moving and eloquent documents of the Holocaust.
Personal logs from captains of the Enterprise (Kirk, Picard, Janeway).
Samuel Pepys, the renowned 17th century diarist who lived in London, England.
The record by Charles Darwin, of his trip on the HMS Beagle
Bridget Jones Diary by Helen Fielding
February 23, 2009
Today is another Solaris BSM example. The Basic Security Module of Solaris audits all system boots, and it is good practice to have checks in place to ensure that these critical systems are only being restarted at the correct times. Any unexpected activity is something that should be investigated.
– By Ananth
February 20, 2009
Today’s look at logs illustrates a typical use case of using logs to review for unexpected behavior. Within Active Directory you have users and groups that are created, deleted and modified. It is always a good idea to go in and review the activities of your domain admins just to be sure that it matches what you feel should be occurring. If it differs it is something to investigate further.
February 19, 2009
Today we look at something a little different – reviewing admin activity for unlocking accounts. Sometimes a lockout occurs simply because a user has fat fingers, but often accounts are locked on purpose and unlocking one of these should be reviewed to see why
February 17, 2009
The Solaris operating systems has some interesting daemons that warrant paying attention to. Today’s log use case examines monitoring processes like sendmail, auditd and sadm to name a few.
February 14, 2009
How LM / SIEM plays a critical role in the integrated system of internal controls Many public companies are still grappling with the demands of complying with the Sarbanes-Oxley Act of 2002 (SOX). SOX Section 404 dictates that audit functions are ultimately responsible for ensuring that financial data is accurate. One key aspect of proof is the absolute verification that sufficient control has been exercised over the corporate network where financial transactions are processed and records are held.
February 13, 2009
I recorded this Wednesday — the day after patch Tuesday, so fittingly, we are going to look at using logs to monitor Windows Updates. Not being up to date on the latest patches leaves security holes but with so many machines and so many patches it is often difficult to keep up with them all. Using logs helps.
February 12, 2009
Today is a depressing log discussion but certainly a sign of the times. When companies are going through reductions in force, IT is called upon to ensure that the company’s Ip is protected. This means that personnel no longer with the company should no longer have access to corporate assets. Today we look at using logs to monitor if there is any improper access.
February 11, 2009
Until now, we have been looking mostly at system, network and security logs. Today, we shift gear and look at database logs, more specifically user access logs in SQL Server.
February 10, 2009
Today, we stay on the subject of Firewalls and Cisco PIX devices in particular. We’ll look at using logs to analyze trends in your firewall activity to quickly spot anomalies.
February 09, 2009
Today’s and tomorrow’s posts look at your firewall. There should be few changes to your firewall and even fewer people making those changes. Changing firewall permissions is likely the easiest way to open up the most glaring security hole in your enterprise. It pays to closely monitor who makes changes and what the changes are, and today we’ll show you how to do that.
February 06, 2009
I often get the feeling that one of these days I am going to fall victim to disk failure. Sure, most times it is backed up, but what a pain. And it always seems as though the backup was done right before you made those modifications yesterday. Monitoring bad disk blocks on devices are an easy way to get an indication that you have a potential problem. Today’s use case looks at this activity.
February 04, 2009
Today we are going to look at a good security use case for logs -reviewing failed attempts to access to shares. Sometimes an attempt to access directories or shares are simply clumsy typing, but often it is an attempt by internal users or hackers to snoop in places they have no need to be.
February 03, 2009
Email has become one of the most important communication methods for businesses — for better or worse! Today we look at using logs from an ISP mail service to get a quick idea of overall trends and availability. Hope you enjoy it.
February 02, 2009
Today’s tip looks at using logs for monitoring disk usage and trends. Many windows programs (like SQL Server, for example) count on certain amounts of free space to operate correctly, and in general when a Windows machine runs out of disk space it often handles the condition in a less than elegant manner. In this example we will see how reporting on the free disk and trends gives a quick and easy early warning system to keep you out of trouble.
January 30, 2009
A couple of days ago we looked at password resets, today we are going to look at something related – account lockouts. This is something that is relatively easy to check – you’ll see many caused by fat fingers but when you start seeing lots of lockouts, especially admin lockouts, it is something you need to be concerned about.
[See post to watch Flash video] -Ananth
January 29, 2009
H. Lee Scott, Jr. is the current CEO of WalMart. On Jan 14, 2009, he reflected on his 9 year tenure as CEO as a guest on the Charlie Rose show.
Certain basic truths, that we all know but bear repeating, were once again emphasized. Here are my top takeaways from that interview:
1) Listen to your customers, listen harder to your critics/opponents, and get external points of view. WalMart gets a lot of negative press and new store locations often generate bitter opposition from some locals. However the majority (who vote with their dollars) would appear to favor the store. WalMart’s top management team who consider themselves decent and fair business people, with an offering that the majority clearly prefers, were unable to understand the opposition. Each side retreated to their trenches and dismissed the other. Scott described how members of the board, with external experience, were able to get Wal-Mart management to listen carefully to what the opposition was saying and with dialog, help mitigate the situation.
2) Focus like a laser on your core competency. Walmart excels at logistics, distribution, store management — the core business of retailing. It is, however, a low margin business. With its enormous cash reserves should Wal-Mart go into other areas e.g. product development where margins are much higher? While it’s tempting, remember “Jack of trades, Master of none”? 111th Congress?
3) Customers will educate themselves before shopping. In the Internet age, expect everybody to be better educated about their choices. This means, if you are fuzzy on your own value proposition and cannot articulate it well on your own product website, then expect to do poorly.
4) In business – get the 80% stuff done quickly. We all know that the first 80% goes quickly, it’s the remaining 20% that is hard and gets progressively harder (Zeno’s Paradox ). After all more than 80% of code consists of error handling. While that 20% is critical for product development, it’s the big 80% done quickly that counts in business (and in government/policy).
The fundamentals are always hard to ingrain – eat in moderation, exercise regularly and all that. Worth reminding ourselves in different settings on a regular basis.
January 28, 2009
Today we look at password reset logs. Generally the first thing a hacker does when hijacking an account is to reset the password. Any resets therefore are worth investigating, more so multiple password resets on an account.
January 27, 2009
A couple of days ago we looked at monitoring firewall incoming traffic. In many cases outbound traffic is as much a risk as incoming. Once hackers penetrate your network they will try to obtain information through spyware and attempt to get this information out. Also, outbound connections often chew up bandwidth — file sharing is a great example of this. We had a customer that could not figure out why his network performance was so degraded — it turned out to be an internal machine acting as a file sharing server. Looking at logs discovered this.
January 26, 2009
Today is a change of platform — we are going to look at how to identify Super User access failures on Solaris BSM systems. It is critical to watch for SU login attempts since once you are in as a SU or Root level the keys to the kingdom are in your pocket.
January 23, 2009
Today we are going to look at how you can use logs to ensure that everyone in the enterprise has gotten their automatic Antivirus update. One of the biggest security holes in an enterprise is individuals that don’t keep their machines updated, or turn auto-update off. In this video we will look at how you can quickly identify machines that are not updated to the latest AV definitions.
January 22, 2009
Yesterday we looked at firewalls, today we are shifting gears and looking at leveraging those logs from Active Directory. Hope you enjoy it.
January 21, 2009
…and we’re back, with use-case# 1 – Firewall Blocks. In this video, I will talk about why it’s important to not just block undesirable connections but also monitor traffic that has been denied entry into your network.
January 20, 2009
Here at Prism we think logs are cool, and that log data can provide valuable intelligence on most aspects of your IT infrastructure – from identifying unusual patterns that indicate security threats, to alerting on changes in configuration data, to detecting potential system downtime issues, to monitoring user activity. Essentially, Log Management is like a Swiss Army knife or even duct tape — it has a thousand and one applications.
Over the next 100 days, as the new administration takes over here in Washington DC, Ananth, the CEO of Prism Microsystems, will present the 100 most critical use-cases of Log Management in a series of videos focusing on real-world scenarios.
Watch this space for more videos, and feel free to rank and comment on your favorite use-cases.
January 09, 2009
Log Management can find answers to every IT-related problem Why can I say that? Because I think most problems get handled the same way. The first stage is someone getting frustrated with the situation. They then use tools to analyze whatever data is accessible to them. From this analysis, they draw some conclusions about the problem’s answer, and then they act. Basically, finding answers to problems requires the ability to generate intelligence and insight from raw data.
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