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Our network is segmented to about 30 VLANS, each offlice/location has its own.
Not all VLANS have all ports open, depends on the requirements needed.
When coming in over the VPN, it's a different VLAN.

Paul

-----Original Message-----
From: Jim Oberholtzer <midrangel@xxxxxxxxxxxxxxxxx>
Sent: Monday, April 20, 2020 8:12 PM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Cc: Steinmetz, Paul <PSteinmetz@xxxxxxxxxx>
Subject: Re: Ports needed for ACS when working from home over VPN

I’m confused. If they open a VPN already, then why do you need to do anything?

The only thing I can see is if the VPN does not allow the needed ports. So just add those to the config.

Jim Oberholtzer
Agile Technology Architects



On Apr 20, 2020, at 6:25 PM, Steinmetz, Paul via MIDRANGE-L <midrange-l@xxxxxxxxxxxxxxxxxx> wrote:

Not my call.

First they must log into the VPN, user / password.
Then there is a DUO MOBILE request for their VPN connection.
This appears on their registered cell phone.
If their phone Is not registered, they don't get in.

Once on the VPN, they have a choice.
If they have a PC at work, they would RDP into their work machine.

If they only have corporate laptop, which is at home, then would launch ACS directly from their corp laptop.

Paul

-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of
Don Brown via MIDRANGE-L
Sent: Monday, April 20, 2020 6:05 PM
To: Midrange Systems Technical Discussion
<midrange-l@xxxxxxxxxxxxxxxxxx>
Cc: Don Brown <DBrown@xxxxxxxxxx>
Subject: Re: Ports needed for ACS when working from home over VPN

So you are going to allow ANYONE through your firewall on the ACS ports - no security except user name and password ?

I hope you have good password policies and all default user profiles passwords have been changed.

Would not be my recommendation.

Cheers

Don Brown





From: "Steinmetz, Paul via MIDRANGE-L" <midrange-l@xxxxxxxxxxxxxxxxxx>
To: "'Midrange Systems Technical Discussion'"
<midrange-l@xxxxxxxxxxxxxxxxxx>
Cc: "Steinmetz, Paul" <PSteinmetz@xxxxxxxxxx>
Date: 21/04/2020 07:20 AM
Subject: Ports needed for ACS when working from home over VPN
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxxxxxxxx>



We are now starting to allow users to WFH without using RDP, via VPN.
Many ports need to be enabled on the firewall for remote access.

I found below link, not sure if this was a complete list.

TCP/IP Ports Required for IBM i Access and Related Functions

https://www.ibm.com/support/pages/tcpip-ports-required-ibm-i-access-an
d-related-functions


The following table lists the ports that IBM i Access and related functions use for communication with the IBM i OS System:

*
o PC Function

* Server Name

Port Non-SSL

Port SSL

* Server Mapper

* as-svrmap

* 449

* ---

* License Management

* as-central

* 8470

* 9470

* Database Access

* as-database

* 8471

* 9471

* Data Queues

* as-dtaq

* 8472

* 9472

* IFS Access using
System i Navigator

* as-file

* 8473

* 9473

* Network Printers

* as-netprt

* 8474

* 9474

* Remote Command

* as-rmtcmd

* 8475

* 9475

* Signon Verification

* as-signon

* 8476

* 9476

* Telnet (5250 Emulation)

* telnet

* 23

* 992

Navigator for i (web)

as-nav

2004

2005

* HTTP Administration

* as-admin

* 2001

* 2010

* POP3 (MAPI)

* pop3

* 5010

* ---

* Management Central

* as-mgtc >

* 5555 and 5544

* 5566 and 5577

* Ultimedia Services

* as-usf

* 8480

* 9480

* DDM/DRDA

* DDM/DRDA

* 446

* 448

* NetServer

* netbios >

* 137

* ---

* NetServer

* CIFS

* 445

* ---

* NetServer

* netbios >

* 139

* ---

* Service Tools Server

* as-sts

* 3000

* ---

DHCP Monitor

---

---

942

* RUNRMTCMD

* REXEC

* 512

* ---


If any of the above ports are restricted using a firewall or any other mechanism, IBM i Access or related functions may fail to operate. For assistance with configuring ports or working with a firewall beyond the above information, contact the firewall provider or obtain a consulting agreement.

Note:
The following ports are common to most IBM i Access Client products such as ODBC, Telnet and other specific functions:
Port 449 is used to look up service by name and return the port number.
Ports 8470 and 9470(TLS/SSL) are used for host code page translation tables and licensing functions.
Ports 8475 and 9475(TLS/SSL) are used to check for application administration restrictions.
Ports 8476 and 9476(TLS/SSL) are used for checking signon verification to authenticate.
depending on your needs you may only need the above ports and the port(s) for your function/application.


Thank You
_____
Paul Steinmetz
IBM i Systems Administrator

Pencor Services, Inc.
462 Delaware Ave
Palmerton Pa 18071

610-826-9117 work
610-826-9188 fax
610-349-0913 cell
610-377-6012 home

psteinmetz@xxxxxxxxxx<mailto:psteinmetz@xxxxxxxxxx>
http://www.pencor.com/

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