emfanish la8oys internet dialer

[Christos Ricudis]

Hello George!

  On 12 Nov 01, George Daflidis-Kotsis wrote to All with subject "Re: emfanish
la8oys internet dialer":

 >>               Ask the peer for up to 2 DNS server addresses.

 GD> Mhn 3exnas pws oi perissoteroi ISP uposthrizoun - molis kai meta
 GD> bias tolmw na pw - Windows kai Mac. Apo kei kai pera to pppd to
 GD> xrhsimopoioume gia na dhmiourghsoume ena TCP/IP link meta3u tou
 GD> ppp0 sto linux kai tou NAS. Mhn perimeneis ton pppd na douleuei
 GD> swsta me ta upoloipa epikourika options.

To sygkekrimeno option sto IPCP htan arxika addition ths microsoft, gia na
ginetai autoconfiguration toy DNS sto dial up. Sta windows den to pairneis
xampari epeidh to kanoyn apo mona toys, sto unix omws prepei esy na pareis thn
plhroforia apo to environment twn child processes toy pppd (ip-up as poyme) kai
na th baleis ekei poy prepei. O pppd douleyei apolytws swsta me ta 'epikourika'
options, aplws prepei na ksereis kai ti na ta kaneis - mia kai o pppd gnwrizei
an mh ti allo oti den einai douleia toy na allazei ta arxeia toy systhmatos
katw apo ta podia sou.

Na shmeiwsw kai kati allo. To deployment toy DNS ws service, exei mia
idiaiterothta - einai unexpectedly public. De mporeis na xrhsimopoihseis ton
SMTP server toy geitonikou ISP, den mporeis na diabaseis news apo ton NNTP
server toy, alla mporeis na xwseis sto resolv.conf sou sxedon opoiondhpote name
server poy anhkei ston opoiondhpote [1] kai na stelneis ekei ta queries sou,
xwris na parapone8ei pote kanenas. ligo to default configuration toy bind
epitrepei ta recursive queries apo toys pantes, ligo to DNS query einai sxetika
mikro (85 bytes) kai den to prosexei kanenas, ligo oi sysadmins den to psaxnoyn
kai poly, telika omws to DNS katalhgei na einai to mono service poy exei
apomeinei apo thn epoxh poy ta panta sto internet htan "eygenikws kai dia
synergasias diamoirazomena". 

8a piasw kanenan Sales Manager kanenos ISP mia mera, kai 8a toy pw gia plaka
oti h etairia toy PAREXEI DWREAN, XWRIS NA TO GNWRIZEI, YPHRESIES DIALYSHS DNS
SE PELATES OLWN TWN ANTAGWNISTWN THS. Molis arxisei na idrwnei 8a toy
ypen8ymisw oti ayto einai kati poy MPOREI DYNHTIKA NA TO EKMETALLEYONTAI oi
antagwnistes toys. 8elw na dw ti 8a ginei :>. 


[1] NAI, EGW eimai o atimos poy xrhsimopoiei akoma gia nameserver thn pythia.
Egw eimai o logos poy kapoios katakahmenos sysadmin sto ITE koitazei ta
logfiles toy named kai aporei pws meta apo tosa xronia akoma yparxoyn
diestrammenoi poy stelnoyn DNS queries sto 139.91.1.1, anti na to afhsoun sthn
hsyxia toy :> 
--
Christos Ricudis

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