Non-ROOT users in LINUX cannot bind ports lower than 1024

Non-ROOT users in LINUX cannot bind ports lower than 1024-Linux Enterprise Application-Linux server application information. For details, refer to the following section. Environment:
ECC6.0 + ORACLE10G
Susu linux 10.1

Yesterday, I wanted to change ITS port to 80 to facilitate access elsewhere. Because it used to be 8000, some units have not opened this port and thus cannot be accessed.
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SMICM, change the port to 80, and the following prompt appears:

....
[Thr 1104202048] *** ERROR => NiIBindSocket: SiBind failed for hdl 6/sock 19
(SI_EADDR_NAVAIL/13; I4; ST; 0.0.0.0: 80) [nixxi. cpp 3174]
[Thr 1104202048] *** ERROR => IcmBindService: You might not have the permissions to bind the service: sap134: 80 [icxxserv_mt.
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14
[Thr 1104202048] *** ERROR => IcmBindService: NiBuf2Listen failed for host sap134: 80 (rc =-16): NIEMYHOST_VERIFY [icxxserv_mt.
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14
........

The system prompts that you do not have the permission to bind the port.

After testing, we found that all ports above 1024 can be opened, but none of them can be opened. However, there is no problem with ERP in the House (on WINDOWS). It is only known after GOOGLE.
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In LINUX, non-ROOT users cannot bind ports below 1024. Some of them solve apache and weblogic problems, but sap does not work. sap cannot be started as a root user, even if it is added
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To sapsys and other groups, in turn, add devadm to the root group, or cannot bind ports lower than 1024.