Category: Network

Bank-to-Cloud VPN: Cost-Saving Options for Integrating AWS with AT&T Netbond

One of the first things we evaluate with a new PortX customer is their network access. Most connect via Internet Protocol Security (IPsec) VPN tunnels to an on-premise firewall. However, we recently established a connection for a new customer with AT&T’s Netbond cloud networking solution, which presented our team with exciting new integration alternatives. We’ll cover the unique options for connecting Amazon Web Services (AWS) to AT&T Netbond, the issues we uncovered, and how we developed a cost-saving solution for the customer.

Show Command Multiple Filtering

Normally when we do show command we make use of the | to filter and put in keywords after like include, exclude, begin and section. As we all know “include” means show only that matches the string like for the example below.

R1#sh run | inc CISCO 
neighbor CISCO peer-group

3750 interface bandwidth limiting

I want to police customers traffic into 20mbps.

IPv4 CIDR Chart

VLSM/CIDR Reference Table (IPv4 Subnetting Chart)
Class Prefix  Subnet Mask  Subnets  Hosts / Usable IPs  Bits used
C  /31  255.255.255.254  128  2 (ppp only)  7 / 1
 /30  255.255.255.252  64  4 (2)  6 / 2
 /29  255.255.255.248  32  8 (6)  5 / 3
 /28  255.255.255.240  16  16 (14)  4 / 4
 /27  255.255.255.224  8  32 (30)  3 / 5
 /26  255.255.255.192  4  64 (62)  2 / 6
 /25  255.255.255.128  2  128 (126)  1 / 7
 /24  255.255.255.0  0  256 (254)  0 / 8
B  /23  255.255.254.0  128  512 (510)  7 / 9
 /22  255.255.252.0  64  1024 (1022)  6 / 10
 /21  255.255.248.0  32  2048 (2046)  5 / 11
 /20  255.255.240.0  16  4096 (4094)  4 / 12
 /19  255.255.224.0  8  8292 (8290)  3 / 13
 /18  255.255.192.0  4  16384 (16382)  2 / 14
 /17  255.255.128.0  2  32768 (32766)  1 / 15
 /16  255.255.0.0  0  65536 (65534)  0 / 16
A  /15  255.254.0.0  128  131072 (- 2)  7 / 17
 /14  255.252.0.0  64  262144 (- 2)  6 / 18
 /13  255.248.0.0  32  524288 (- 2)  5 / 19
 /12  255.240.0.0  16  1048576 (- 2)  4 / 20
 /11  255.224.0.0  8  2097152 (- 2)  3 / 21
 /10  255.192.0.0  4  4194304 (- 2)  2 / 22
 /9  255.128.0.0  2  8388608 (- 2)  1 / 23
 /8  255.0.0.0  0  16777216 (- 2)  0 / 24

IPSec VPN with Netgear FVS318v3

First you have to set up your FVS318 router to accept the connections.