[cisco-voip] MRA (Collaboration Edge) Intrusion Protection

[Brian Meade]

Is anyone else having issues with the "HTTP proxy protocol violation"
automated detection feature or Expressway?

I've got over 10,000 hits on this built-in rule and it seems to be blocking
some legitimate logins via Jabber.

It looks like this in the event log:
2015-09-11T21:05:09-04:00 sh[1195]: Event="Intrusion Protection"
Src-ip="X.X.X.X" Detail="Collaboration Edge HTTP Intrusion Protection
blocking X.X.X.X" Level="INFO" UTCTime="2015/09/12-01:05:09"
2015-09-11T21:05:09-04:00 traffic_server[24581]: Event="Sending HTTP error
response" Status="429" Reason="Unknown Status" Dst-ip="X.X.X.X"
Dst-port="52940" UTCTime="2015-09-12 01:05:09,151"

It looks like this in the Jabber log:
2015-09-11 17:09:15,746 INFO  [0x00000dc0]
[ls\src\http\BasicHttpClientImpl.cpp(399)] [csf.httpclient]
[csf::http::executeImpl] - *-----* HTTP response code 0 for request #2 to
https://myexpressway.client.com:8443/bG9naWNub3cuY29t/get_edge_config?service_name=_cisco-uds&service_name=_cuplogin
2015-09-11 17:09:15,746 ERROR [0x00000dc0]
[ls\src\http\BasicHttpClientImpl.cpp(404)] [csf.httpclient]
[csf::http::executeImpl] - There was an issue performing the call to
curl_easy_perform for request #2: CONNECTION_TIMEOUT_ERROR

It looks like this in the detailed expressway logging:
2015-09-11T11:12:06-04:00 atlitexpe1 UTCTime="2015-09-11 15:12:06,146"
Event="System Configuration Changed" Node="clusterdb at 127.0.0.1"
PID="<0.3251.0>" Detail="xconfiguration fail2banJailStatus uuid
12f52e25-4df6-4fd3-9697-621d9de3a796 jail: http-ce-intrusion total_fails -
changed from: 202411 to: 202416"


Anyone else seeing issues like this?  This particular user also has an 8841
at home.  Is there a limit to number of MRA connections behind a single
public IP?

Thanks,
Brian Meade
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