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Graphics Interchange Format  |  1997-04-17  |  38.4 KB  |  429x286  |  4-bit (16 colors)
   ocr: CIRCUIT CONNECTION GATEWAY Server Firewall Client 2 Connection Table 5 n0D Firewalt 1 Coanection Reguest ferwerded Request Connection Allowed Cotneclion Figure 2 : The cinuit comnection gareaay 15 used for circuit-oriented operations berween # dient and serter. Tbe dient inide the firewall makes a requet for a comection tbat the fremall perifies. Ifit is acceptable, the: request I5 formarded to tbe. SeTTET outside the freuall. The circuit gatewuy CH prevent initiation ofconnections in tbe otber direction, or tbe gateaay van be bidireational,