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Re: [NOVICE] sudo / pppd



In <sslug@sslug> Niels Kolloff <sslug@sslug> writes:

>> Prøv at tilføje
>>   PATH=/bin:/sbin:/usr/bin:/usr/sbin
>> i starten af dit connect script.

>Er det ikke et brist i sikkerheden ved at give en almindelig bruger adgang til
>De nævnte directories??

Nej. Almindelige brugere har under alle omstændigheder mulighed for at
eksekvere programmerne i de directories, ved blot at angive fuld path
til det program, der skal eksekveres. (I al fald med default directory
permissions). Hvis programmet kræver root-privilegier, kan det styres
enten ved at programmet ikke har execute-permission sat for "other"
gruppen (f.eks. permissions "--x--x---"), eller ved at det simpelt hen
ikke kan fungere hvis ikke det køres med root- privilegier
(f.eks. pppd, der er nødt til at have root privilegier for at kunne
manipulere netværks-interfaces via systemkald i kernen).
-- 
Henrik Storner      | "Crackers thrive on code secrecy. Cockcroaches breed 
<sslug@sslug> |  in the dark. It's time to let the sunlight in."
                    |  
                    |          Eric S. Raymond, re. the Frontpage backdoor


 
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