title: Can I do a HTTP post to a IP address?
body: <p>Our client allows a VPN connection.This is the information I've received from them</p>
  
  <pre><code>Connecting to OKMMIS will be accomplished by your firewall via TCP using a socket.
  Here is a typical transmission which should help in coding the software.
  
  
  1. The transmission should look roughly like the following:
  
  POST_/OKMMISPOS_HTTP/5.1
  Content-Length:_521
  
  ISA*00*__________*00*__________*ZZ*500000330______*ZZ*731476619______*090303*1414*U*004
  01*390412079*0*P*:~GS*HS*500000022*731476619*20090303*141419*390412079*X*004010X092A1~S
  T*270*390402706~BHT*0022*13*390412079*20090303*141419~HL*1**20*1~NM1*PR*2*OKLAHOMA_HEAL
  TH_CARE_AUTHORITY*****FI*731476619~HL*2*1*21*1~NM1*1P*2*XXXTEST_PROVIDER*****XX*1234567
  893~HL*3*2*22*0~TRN*1*00000006227390402706*9XXXMSGUTL~NM1*IL*1*TEST*TEST****MI*TEST~DMG
  *D8*19820304~DTP*472*D8*20090303~EQ*30~SE*13*390402706~GE*1*390412079~IEA*1*390412079~
  </code></pre>
  
  <p>This is a 270 eligibility request. 
  This is a 271 response </p>
  
  <pre><code>HTTP/5.1_200_OK
  Content-Length:_448
  
  ISA*00*__________*00*__________*ZZ*731476619______*ZZ*500000022______*090303*1702*U*004
  01*000000001*0*P*:~GS*HB*731476619*500000330*20090303*170202*1*X*004010X092A1~ST*271*39
  0402706~BHT*0022*11*390412079*20090303*1702~HL*1**20*1~NM1*PR*2*OKLAHOMA_HEALTH_CARE_AU
  THORITY*****FI*731476619~PER*IC*CUSTOMER_CALL_CENTER*TE*4055226205*TE*8005220114~HL*2*1
  *21*0~NM1*1P*2*XXXTEST_PROVIDER*****XX*1234567893~AAA*N**51*C~SE*9*390402706~GE*1*1~IEA
  *1*000000001~
  </code></pre>
  
  <p>So as per my understanding this is a HTTP Post and is pretty simple. 
  But they would like to do this by first establishing a VPN tunnel. They've sent some source IP's and destination IP's, port numbers to start with.</p>
  
  <p>Finally my question is, How do I establish a VPN tunnel+ HTPP post. This is confusing me. 
  I've requested them for a URL to post to. Should this suffice? or Can I do a http post to a IP? </p>
  
  <p>Any ideas are very much appreciated</p>