How do I configure an access list to allow only one IP through ingress port?

[Anonymous]

entry iprule1 {if {
source-address 10.1.2.246/32 ;
}
then {
permit ;
}
else {
deny ;
}
}

I am getting error:

Error: ACL install operation failed - conflicting actions

And where is "Extreme Networks Policy Manager" cant find it on extremenewtworks.com.

[Anonymous]

sorry again but this has blocked all services from the host 10.1.2.246. It cannot access internet or ping default gateway either. Please advice!! 

[Alexandr_P]

Sorry, forgot 1 line:

entry iprule1 {
if {
source-address 10.1.2.246/32 ;
} then {
permit;
}
}
# deny everyone else
entry iprule2 {
if {
} then {
deny;
}
}

[Anonymous]

Hi I tried this also earlier but I get the following error:

Error: Policy ip has syntax errors
Line 8 : Did not get expected keyword "else","if" is not valid
Configuration faiError: Policy ip has syntax errorsLine 8 : Did not get expected keyword "else","if" is not valid
Configuration failed on backup Node, command execution aborted!
led on backup Node, command execution aborted!