Solved

Cisco ASA denying traffic on inside interface from inside systems.

Posted on 2014-04-05
1
620 Views
Last Modified: 2014-07-19
I have a very strange situation,
ASA5505 in a small office running 8.4(3)
Server (VMware ESXi 5.5.0) with Windows 2008R2 running as a VM. is plugged into the ASA
The ASA is denying icmp and dns packets between the VMware and the Windows server.
they both use the same NIC but obviously have different mac addresses.
If I ssh into the ESXi and try to ping the windows server 1 packet makes it and then the rest are blocked
Source                  Dest                         Message
LNSP-DC1    10.170.1.21   Deny inbound icmp src inside:LNSP-DC1 dst inside:10.170.1.21 (type 0, code 0)


here are my access lists:
access-list acl_out extended permit icmp any any
access-list acl_out extended permit tcp object-group MailServers any object-group MailService
access-list acl_out extended deny tcp any any eq smtp
access-list acl_out extended permit ip any any
access-list acl_inbound extended permit icmp any any echo-reply
access-list acl_inbound extended permit icmp any any unreachable
access-list acl_inbound extended permit icmp any any time-exceeded
access-list acl_inbound extended permit icmp any any
access-list acl_inbound extended permit udp any any eq isakmp
access-list acl_inbound extended permit tcp object-group MailFilters object-group MailServers
access-list acl_inbound extended permit tcp any object-group WebServers object-group WebPorts
access-list acl_inbound extended permit tcp any object-group TerminalServers object-group RDCPorts
access-list acl_inbound extended permit tcp any object-group TerminalWorkstation object-group RDCPorts

It is impacting other types of traffic also, ssh, vcenter, etc
It just makes no sense at all....
Any help is greatly appreciated.
0
Comment
Question by:brian_appliedcpu
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 57

Accepted Solution

by:
Pete Long earned 500 total points
ID: 39981117
Is this your problem? Ignore the conflict problems look at the proxy arp bit

IP Address Conflicts with VMware ESX and Cisco ASA
Disable proxy-arp


Pete
0

Featured Post

NEW Veeam Agent for Microsoft Windows

Backup and recover physical and cloud-based servers and workstations, as well as endpoint devices that belong to remote users. Avoid downtime and data loss quickly and easily for Windows-based physical or public cloud-based workloads!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

The article will include the best Data Recovery Tools along with their Features, Capabilities, and their Download Links. Hope you’ll enjoy it and will choose the one as required by you.
Use of TCL script on Cisco devices:  - create file and merge it with running configuration to apply configuration changes
This video teaches viewers how to encrypt an external drive that requires a password to read and edit the drive. All tasks are done in Disk Utility. Plug in the external drive you wish to encrypt: Make sure all previous data on the drive has been …
As a trusted technology advisor to your customers you are likely getting the daily question of, ‘should I put this in the cloud?’ As customer demands for cloud services increases, companies will see a shift from traditional buying patterns to new…

737 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question