[mdlug] Cisco 2651XM NAT(?) Issues

[John R Ayer]

Hi:

I'm having some issues with my Cisco router, not exactly Linux; however,
I've seen a lot of knowledge here and hoping someone can help me out with
it.

I cannot connect to my Ubuntu based VPN server through a Cisco 2651XM
router; however, I can connect through a consumer grade TP-Link router.
Network map looks like:

Router: Cisco 2651XM (10.13.8.254) <--> Switch: Cisco Catalyst
WS-C2960G-24TC-L (10.13.8.21) <--> Ubuntu VPN Server (10.13.8.251)

I can see the initial connection hit the server; however, the connection
times out shortly after. I know I am missing something stupid but I cannot
put my finger on it. The connection attempt is coming from my cell phone
(T-Mobile LTE) which is the same device that worked before installing the
2651.

Does anyone want to point out the obvious to me?

This is a home network, albeit it is (for the most part) enterprise grade
gear.

I'm hoping to talk WOW into letting me switch over to a business account
rather than residential so I can grab a /29 for core services and be done
with the whole NAT hassle.

The VPN server hands out the addresses (which are outside of the DHCP pool):
ip range = 10.13.8.6-10.13.8.20
local ip = 10.13.8.5

I did not include the config files for the VPN server because it works with
a consumer grade router instead of the Cisco. If they are relevant let me
know and I will update.

Thanks in advance!

2651 config: http://pastebin.com/ZPtamrV6
2651 nat debug: http://pastebin.com/481KrAgm
Syslog: http://pastebin.com/s0tqVMn3