Re: lug-bg: Security Win2000 Terminal Client over internet

[danchev@xxxxxxxxx (George Danchev)]

On 23 01 2003 12:01, Ïåòúð Ìàðêîâ wrote:

>  "Êàê äà ñè îðãàíèçèðàì ñèãóðíà êîìóíèêàöèÿ ÷ðåç Ëèíóêñ
>  ìàðøðóòèçàòîðè/ðóòåðè?"

Îê, 
åòî ïàê (íàäÿâàì ñå ïî-ÿñíî;). Íàïðèìåð SQL ñåñèÿ ñ PostgreSQL ïðåç SSH òóíåë. 

localhost - 1.1.1.1 (client)
--------------------------------
psql, ssh1, sshd.  
( L1 ) -L 5432 : 2.2.2.2 : 2345 
( R1 ) -R 2345 : 1.1.1.1 : 5432

remotehost - 2.2.2.2 (server)
-----------------------------------
PostgreSQL, ssh2, sshd
( L2 ) -L 5432 : 1.1.1.1 : 2345
( R2 ) -R 2345 : 2.2.2.2 : 5432

Íà 1.1.1.1 ñå èíèöèèðà ëîêàëíà êîíåêöèÿ êúì ïîðò 5432, 
(psql -p 5432 -h 1.1.1.1) êîÿòî 
ssh1 ïðèõâàùà è forward-âà (ïî secure channel) 
êúì ïîðò 2345 íà õîñò 2.2.2.2 ( L1 ). Òàì
ssh2 ìó å êàçàíî äà ñëóøà îòäàëå÷åíèÿ ïîðò 2345 íà õîñò 1.1.1.1 
ïðèõâàùà è ãî forward-âà êúì ëîêàëíèÿ ñè ïîðò 5432 (R2).  
Òàì ñëóøà PostgreSQL è îòãîâàðÿ ëîêàëíî íà ïîðò 5432 íà õîñò 2.2.2.2, êîÿòî
ssh2 forward-âà êúì îòäàëå÷åíèÿ ïîðò 2345 íà 1.1.1.1 ( L2). Òàì 
ssh1 ñëóøà è forward-âà êúì ëîêàëíèÿ ñè 5432 ( R! ). Ïî-íàòàòúê ïîçíàé ;-)

(Äàëè îáúðêàõ ìíîãî íåùàòà). Îñòàâà äà ñå ïðî÷åòå man ssh íàïðèìåð.


-- 
Greets, 
fr33zb1 

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