Forum Discussion

Ahmed_Galal's avatar
Ahmed_Galal
Icon for Cirrostratus rankCirrostratus
Nov 28, 2019

MS OWA not working after deploying ASM

Hi all,   i have applied ASM Policy template for OWA Exchange every thing works perfect but MS outlook is not working.   event log that all exchange.asmx and rpcproxy.dll that with cookies ...
application delivery
ASM Advanced WAF
  • Ahmed_Galal's avatar
    Ahmed_Galal
    Dec 03, 2019

    via iApp and i have used F5 ASM template for exchange 2016. i have found an artical saying that RPC is originally binary traffic and it should be excluded from ASM so i made iRule to excluded RPC over HTTP traffic then it works perfect.

     

    thanks boneyard for your response.

boneyard's avatar
boneyard
Icon for MVP rankMVP
Nov 30, 2019

so for example owa works but the outlook full client doesnt?

 

check the ASM event log, is traffic blocked?

 

  • Ahmed_Galal's avatar
    Ahmed_Galal
    Icon for Cirrostratus rankCirrostratus
    Dec 01, 2019

    no traffic not blocked, traffic is legal but outlook sessions returns with response code 401 and not accepted.

    • boneyard's avatar
      boneyard
      Icon for MVP rankMVP
      Dec 01, 2019

      for reference which version tmos (big-ip) and exchange?

       

      how did you set this up? did you have exchange load balanced via an iApp or manual?

       

      how did you now enable ASM? via which template option?

    • Ahmed_Galal's avatar
      Ahmed_Galal
      Icon for Cirrostratus rankCirrostratus
      Dec 03, 2019

      via iApp and i have used F5 ASM template for exchange 2016. i have found an artical saying that RPC is originally binary traffic and it should be excluded from ASM so i made iRule to excluded RPC over HTTP traffic then it works perfect.

       

      thanks boneyard for your response.

    • boneyard's avatar
      boneyard
      Icon for MVP rankMVP
      Dec 07, 2019

      thank for responding back, good to see you solved it.