When I tried to connect with rsh to solaris 2.6 machine from my redhat 9.0 machine I had a problem.
For example a simple command :
[operator@ldw1 tmp]$ rsh scmssrv1 "ls"
poll: protocol failure in circuit setup
When I tried exactly the same thing from a redhat 8 machine there is no problem. The unix machine same and rlogin works for both redhats.
I tried to install and use the same rsh and rsh-server packages on the redhat machines but there was no change.
There is no firewall. Only a soft linux router with some little firewall configuration and as I said rlogin is working on the machine properly.
Both redhat machines are on the same swith and same network. The network configuration for both machines ( Two redhats = 1 woks the other not) are exactly same.
Thanks for your help.