Re: Ports needed for ACS when working from home over VPN

[DrFranken <midrange@xxxxxxxxxxxx>]

Sorry to be late to the party. Yesterday was Lumberjack day, gravity won.

First off the link is good. Those are the ports you'll need.  Highly 
unlikely you'll use the Management Central ports though or the POP3 port 
for that matter. Hopefully Netbios is also unused (137, 139) as CIFS 
(445) is the choice these days. Finally Service Tools would only be 
needed for admins not general users.

One thing that seems missing is the remaining ports for Navigator for i 
(The *ADMIN Server)  Shown are 2004 for non SSL and 2005 for SSL which 
is correct and 2001 is the starting port. But they use TCP ports from 
2001 through 2012 so if you need access to that use the port range in 
your rules not just the ports listed there.

NOW as to the question "Do you need to open firewall ports at all?" 
That depends. When the VPN connection is made your firewall 
administrators CAN apply filters/rules (access-lists in cisco terms) 
that either allow some ports and block the rest OR block some ports 
allow the rest.  OR they may not apply filters and thus you can get to 
any ports required. That is a configuration choice. So you'll need to 
find out if they did apply any filters and only if they did allow these 
ports through the firewall.


        - Larry "DrFranken" Bolhuis

www.Frankeni.com
www.iDevCloud.com - Personal Development IBM i timeshare service.
www.iInTheCloud.com - Commercial IBM i Cloud Hosting.

On 4/20/2020 5:20 PM, Steinmetz, Paul via MIDRANGE-L wrote:
> 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-and-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/