Blog Archives

OS X: How to Setup NAT on Lion and Mountain Lion

It appears Apple changed the way NAT works, starting in Lion and this upset a lot of people. Apparently, nat would just stop working for some folks after they upgraded to Lion from Snow Leopard. Finding really in-depth information about

Posted in Networking, OS X & iDevices

[Solved] Parallels Desktop: Interface vmnet1 is not present. This should be created at boot time.

I recently modified my Parallels DHCP settings because I’m really particular about the internal subnets I work with in the lab (192.168 is the ugliest subnet ever). Once I modified the file at /Library/Preferences/VMware\ Fusion/networking (OS X) my Parallels Desktop

Posted in Networking, OS X & iDevices, VMware

Patterns and Practices: A Guide to Claims-Based Identity and Access Control – Free ebook.

While I usually like conversation-style technical books (think: Manning’s In Action series and many Wrox books), Microsoft’s Patterns and Practices series is one of my favorite even though they feel so formal. Recently, my buddy Buck Woody posted a link

Posted in Active Directory, Networking, Security

OpenVPN: Update Client DNS Servers on Mac OS X Using the Command Line.

There’s a bit of a debate on how best to update your DNS resolver on Mac OS X when connecting to an OpenVPN Server. For whatever reason, even if use DHCP on the VPN server, OS X won’t use the

Posted in Networking, OS X & iDevices

OpenWRT & PPTPD: A Love Story

Firesheep got me thinkin’ that I should probably do a little more to beef up the security of my Internet connection on public networks. PPTP has always been a favorite of mine, because it hides traffic well enough to deter

Posted in Linux, Networking, Security

HOWTO: Simply Connect Mac OSX to a dd-wrt OpenVPN Server on TCP Port 443

If you find yourself on a really restrictive network but still want to connect to a remote VPN, consider this solution. It allows you to connect a Mac OS X OpenVPN client to an OpenVPN server using a static key.

Posted in Networking, OS X & iDevices, Security

SCO UNIX: Permanently Change a Static IP Address in SCO

If you need to temporarily add an IP address in SCO, you can use ifconfig ifconfig net0 inet 172.16.1.10 netmask 255.255.255.0 But really, that just creates an alias that will disappear once the server has been rebooted. In order to

Posted in Networking

VMware ESXi 4.0: Create Virtual Machine Error Caused by NSF File on Western Digital MyBook WE

Such an awkward title, I know. It’s just hard to encapsulate the following error message into a blog post title: Create virtual machine 172.16.1.129 Error caused by file /vmfs/volumes/0-cb8d2a5-20-f15722/win-2k8.vmdk Basically, I’m taking ghetto to the next level by using my

Posted in Networking, Security, VMware

OpenWRT: iptables-based Firewall Rules for PPTP and IPsec

Just a handy little reference for myself. #Internal PPTP Server vpnserver="172.16.1.10" iptables -N pptp iptables -A pptp -p tcp --destination-port 1723 --dst $vpnserver -j ACCEPT iptables -A pptp -p gre --dst $vpnserver -j ACCEPT iptables -I FORWARD -j pptp iptables

Posted in Linux, Networking, Security

Setting Up a Site-to-Site VPN using a Linksys RV082 and OpenWrt/Openswan on a WRT54GS

After a week of trying out several different types of VPNs (PPTP, SSTP, IPSEC) at my new office, I finally figured out a solution to setup a WAN between my Linksys WRT54GSv3 and a Linksys RV082 business router. The solution

Posted in Networking