Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

Cisco ASA denying traffic on inside interface from inside systems.

Posted on 2014-04-05
1
Medium Priority
?
660 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 2000 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

Q2 2017 - Latest Malware & Internet Attacks

WatchGuard’s Threat Lab is a group of dedicated threat researchers committed to helping you stay ahead of the bad guys by providing in-depth analysis of the top security threats to your network.  Check out our latest Quarterly Internet Security Report!

Question has a verified solution.

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

WARNING:   If you follow the instructions here, you will wipe out your VTP and VLAN configurations.  Make sure you have backed up your switch!!! I recently had some issues with a few low-end Cisco routers (RV325) and I opened a case with Cisco TA…
Compliance and data security require steps be taken to prevent unauthorized users from copying data.  Here's one method to prevent data theft via USB drives (and writable optical media).
This Micro Tutorial will teach you how to reformat your flash drive. Sometimes your flash drive may have issues carrying files so this will completely restore it to manufacturing settings. Make sure to backup all files before reformatting. This w…
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…
Suggested Courses

618 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