Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Community Member

How do I open a port on a router?

i need to open 4 ports on a router.

ports # 80, 443, 6464, and 7575.

i feel really dumb, but can someone help me out?

its for a IPSEC, LAN-2-LAN connection. THey can send information, but cant receive, and these ports are closed. They need to be open. HELP!

Dustin

6 REPLIES

Re: How do I open a port on a router?

Dustin, the access is determined by the acls you have configured on the IPsec tunnel, assuming your l2l vpn is between two routers see example link.

http://www.cisco.com/en/US/tech/tk583/tk372/technologies_configuration_example09186a0080094634.shtml

Rgds

-Jorge

Community Member

Re: How do I open a port on a router?

so it would actually be on my firewall rather than the internal router?

Re: How do I open a port on a router?

Whichever you are terminating the tunnel at router or firewall the acl on the router or firewall terminating the tunnel will allow the traffic.

Community Member

Re: How do I open a port on a router?

One thing you can do is run a packet capture on your firewall( fw--> dst and reverse). If you are using PIX Ver 5.xx or 6.xx you can run the following command

(See Below)

capture -acl specify source traffic to destination including -interface to which the traffic is flowing.

Ex First create a test ACL to see if the ports are open or blocked from the firewall to dest

ACcess List 102 permit x.x.x.x where x.x.x.x = src to y.y.y.y where y.y.y.y is the destination and test all ports by using acl for each port to test

Then run capture -name, and run traffic to see results.

after you run traffic through

go back and type capture _name, this will give you the output, check to see if there are any resets denoted by -R in the trace, and if there are thats your problem. This means that the packets are being reste to src due to blobked port primarily on the FW. HTH

Community Member

Re: How do I open a port on a router?

what about asa 5520, version 8.0?

Community Member

Re: How do I open a port on a router?

Your best bet is through the ADSM gui interface

223
Views
0
Helpful
6
Replies
CreatePlease to create content