Zos mainframe notes

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change tcpip routing zos tso

Hercules TCP/IP

http://www.hercules-390.org/herctcp.html

TCPIP ipv4 forwarding

Current IP forwarding status

Read a current state of IP forwarding:

# sysctl net.ipv4.ip_forward
net.ipv4.ip_forward = 1

Currently, the output number 1 indicates that the IP forwarding is enabled. The above value is read from the Linux proc file system and more precisely from the actual file /proc/sys/net/ipv4/ip_forward file:

# cat /proc/sys/net/ipv4/ip_forward
1

Disable IP forwarding

To disable IP forwarding on a running Linux system run:

# sysctl -w net.ipv4.ip_forward=0
net.ipv4.ip_forward = 0 

https://hercules-390.github.io/html/herctcp.html

telnet works on TSO

Note that flashes up before entering session

 EZA8265I Using Line Mode...

 EZA8267I Notes on using Telnet when in Line Mode:
 EZA8268I - To hide Password, Hit PF3 or PF15
 EZA8269I - To enter Telnet Command, Hit PF4-12, or PF16-24
 ***