Category Archives: FIXES

Force apt-get to use IPv4 instead of IPv6

It seems that Ubuntu/Debian (or perhaps other distros as well) prefer IPv6 DNS records instead of IPv4 when applicable and some times this results in loss of connectivity or similar problems. I ran into this issue today while trying to update an old VPS with apt-get/aptitude. Specifically, security.ubuntu.com was being resolved in an unreachable IPv6… Read More »

Microsoft VPN PPTP client through Cisco ASA Firewall

Scenario: Using Microsoft Windows built in VPN Client to connect to remote PPTP VPN server through Cisco ASA firewall. Symptom: Error 619 Solution: In ASA Firewall, enter below command. ASA-active#conf t ASA-active(config)#policy-map global_policy ASA-active(config-pmap)# class inspection_default ASA-active(config-pmap-c)#inspect pptp ASA-active(config-pmap-c)#exit ASA-active(config)#access-list $Inbound_Interface_ACL permit gre $source_ip/network any ASA-active(config)#access-list $Inbound_Interface_ACL permit permit tcp $source_ip/network any eq pptp Common… Read More »

Graylog2: “Could not bind UDP syslog input to address /0.0.0.0:514”

Problem Received error “Could not bind UDP syslog input to address /0.0.0.0:514, Failed to bind to: /0.0.0.0:514, Address already in use” when adding log input using UDP 514 (default syslog port). Explanation In UNIX/LINUX, assigned port 1024 and below require root privilege. Either you run graylog2 as root (not recommended) or follow below workaround. Solution… Read More »

Cisco Insight Reporter: Sybase DB issue

Problem: Upgraded Insight Reporter from v3.2.0 to 3.4.0, existing traffic database show disconnected Workaround/Solution: 1) To get Sybase JDBC Connector Download JConnect from this link http://www.sybase.com/products/allproductsa-z/softwaredeveloperkit/jconnect Extract and Install it in Insight Server ./setup.bin -i console Go to /opt/sybase/jConnect-7_0/classes and copy conn4.jar and  jTDS3.jar into Cisco Insight directory (/home/user/Insight/apache-tomcat-6.0.20/webapps/insight/WEB-INF/lib/) Restart tomcat /etc/init.d/tomcat-user stop /etc/init.d/tomcat-user start 2) To determine… Read More »

[FIX] Adding magnet url to Buffalo Linkstation embedded μTorrent

Since The Pirate Bay using magnet link to initiate torrent download, i’m having issue with my μTorrent running in Linkstation. Below is the symptom: Magnet links can be added but don’t start, they sit at 0 seeders and peers and display the null error mentioned previously in the event log: JS error: [778] Unable to get value of the… Read More »