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Azure S2S with ASA - TCP Resets on Certain Subnets

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Hey all,

I have a unique problem that has recently arised as follows:

OnPremise >S2S> Azure has no issues with Connectivity

Azure >S2S> OnPremiseVLAN40 (All Good)

Azure>S2S> OnPremiseVLAN5 (All Good)

Azure >S2S> OnPremiseVLAN0(TCP Resets Occur)

Azure >S2S> OnPremiseVLAN1(TCP Resets Occur)

Our Symptoms as follows:

1. Can Ping with no problems

2. Establish a Telnet on :3389 with no problems

3. nslookup works

4. RDP does not work

5. Most other connectivity fails

6. Wireshark shows these Connection resets as follows:

0x014 (RST, ACK)

Connection Reset (RST)

7. This happens on all kinds of protocols\ports(88,135,389,3389)

Looking for any guidance on ideas....


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