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snmp errors in syslog

1
19. April 2009 / in HowTo, Linux, Security / by

I finally got fed up of these messages in my log files (/var/log/messages) and decided to do something about them:

Apr 19 04:14:47 hostname snmpd[3458]: Connection from UDP: [127.0.0.1]:42482
Apr 19 04:14:47 hostname snmpd[3458]: Received SNMP packet(s) from UDP: [127.0.0.1]:42482

After reading, googling around and testing for a while I rounded it the following solution, it should work in any Linux system with net-snmp after some tweaks but out of the box on CentOS, REL, Fedora or any of its relatives:

1. Remove the -a from the snmpd start options or write this in the /etc/sysconfig/snmpd.options file:

OPTIONS=”-Lsd -Lf /dev/null -p /var/run/snmpd.pid”

This should take care of the “Received SNMP” packets line (2nd one).

2. Add dontLogTCPWrappersConnects true at the end of your /etc/snmp/snmpd.conf file, that takes care of the other line:

Apr 19 04:13:47 dcf-is1p snmpd[3458]: Connection from UDP: [127.0.0.1]:48911

According to the man page: This setting disables the log messages for accepted connections. Denied connections will still be logged.”

The problem is that the default settings are to log every connection / request, so what we did was leave the log work only for failed and authenticated attempts

Enjoy readable logs!

Windows FTP client passive

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2. March 2009 / in Education, Technology, Windows / by

Have you ever tried to connect to an ftp server on a windows box?

I had to do it today and that thing doesn’t know the command: PASV !!

Well after surfing for while I found the workaround: just type:

LITERAL PASV

That bypasses the checks on the client and just sends the command to the server.

picasa and Fedora 10

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24. February 2009 / in Open Source, Software / by

It’s really been a while since a sent my last update with pictures of what I’ve done.  I normally try to keep friends and family up to date on what I’ve been doing since I moved to the other side of the Atlantic (to the European side).  So today I fired up picasa to get the web albums up2date and nothing happend.  When I ran it in a shell this came out:

[host]:/home/epablo:>picasa
/usr/bin/picasa: line 139: 25634 Segmentation fault      “$PIC_BINDIR”/wrapper check_dir.exe.so
/usr/bin/picasa: line 175: 25734 Segmentation fault      “$PIC_BINDIR/wrapper” regedit /E $registry_export HKEY_USERS\S-1-5-4\Software\Google\Picasa\Picasa2\Preferences\

After googling for I while I didn’t find any reasonable explanation for the error.  I did find a beta (comming from google what could I expect) repository (here are the instructions on how to set it up) and upgraded from picasa-2.7.3736-15 to picasa-3.0.5744-02

It started up, I’ll keep you posted on how it goes with the field try..

VMware Workstation 6.5.0 + fedora 10

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9. February 2009 / in Technology / by

So I upgraded to Fedora 10 and my VMWare stoped working as expected and comented on my last post.

After testing, playing and surfing for I while I found this post which gave me some ideas.  This his how I got it working:

TERM=dumb /usr/bin/vmware-modconfig –console –install-all –icon=/usr/share/icons/hicolor/32×32/apps/vmware-workstation.png –appname=”VMware Workstation”

So have fun

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