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Community Member

Comcast metro e and ASA 5512-x configuration

I am trying to get the basic configuration set up for my new ASA 5512-x

I have the Comcast fiber --> copper fed from the ciena switch port 1 into the ASA Eth(0)

I have a laptop plugged into Mgmt Port

I have a laptop with DHCP plugged into Eth(1)

 

I set up the following config in ASDM

Eth(0) Outside

  • IP Address: Comcast Layer 3 IP: 50.BBB.BBB.BBB
  • Subnet Mask: Comcast Layer 3 Subnet Mask: 255.CCC.CCC.CCC
  • Security: 0

Eth(1) Inside

  • IP Address: 192.168.100.1
  • Mask: 255.255.255.0
  • Security: 0

Static Route 

  • Interface: Outside
  • Network: any4
  • IP Address: 0.0.0.0
  • Net Mask: 0.0.0.0
  • Gateway IP: Comcast Gateway: 50.AAA.AAA.AAA

 

Is this all I need for a beginning basic internet connection to the laptop in Eth(1)

Any advice is greatly appreciated.

-Mike

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2 REPLIES
Community Member

You will want to set your

You will want to set your inside security level to 100 and your outside to 0.

Community Member

Hi mikeprennie, Did you

Hi

  IP Information:
– /30 between Comcast end and the customers layer 3 device and a  /27   ( 30 Usable IP's )
 
P2P                      /30= 50.iii.x.yy
Subnet                      = 255.255.255.252
Comcast SUR            = 50.iii.x.aa     gateway
MyCompany IP link         =  50.iii.x.ab     to customer provided router
 
 
                             /27= 50.jjj.cc.d
Subnet                      = 255.255.255.224
Thirty usable IPs starting with  50.jjj.cc.1, 2, 3 …   

 

will you say that your  50.BBB.BBB.BBB = 50.jjj.cc.1            (I chose that)

and 50.AAA.AAA.AAA = 50.iii.x.aa 

 

Please let me know.

 

Christian

 

 

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