\n"); w.document.close(); } else { var w = window.open (loc,'win1','height=400,width=650,scrollbars,resizable'); } w.focus(); } function open_window2 (loc) { self.name="main"; if ((navigator.appVersion.indexOf("MSIE 5.0") != -1) && (navigator.appName.indexOf("Explorer") != -1)){ var w = window.open ("", "win1", "height=100,width=500,scrollbars,resizable" ); w.document.write("\n"); w.document.write('

\n"); w.document.write("\n"); w.document.close(); } else { var w = window.open (loc, "win1", "height=100,width=500,scrollbars,resizable" ); } w.focus(); } function open_window3 (loc) { self.name="main"; if ((navigator.appVersion.indexOf("MSIE 5.0") != -1) && (navigator.appName.indexOf("Explorer") != -1)){ var w = window.open ("", "win1", "height=400,width=450,scrollbars,resizable,top=200" ); w.document.write("\n"); w.document.write('\n"); w.document.write("\n"); w.document.close(); } else { var w = window.open (loc, "win1", "height=400,width=450,scrollbars,resizable,top=200" ); } w.focus(); } function open_window4 (loc) { self.name="main"; if ((navigator.appVersion.indexOf("MSIE 5.0") != -1) && (navigator.appName.indexOf("Explorer") != -1)){ var w = window.open ("", "win1", "height=150,width=450,scrollbars,resizable,top=200" ); w.document.write("\n"); w.document.write('\n"); w.document.write("\n"); w.document.close(); } else { var w = window.open (loc, "win1", "height=150,width=450,scrollbars,resizable,top=200" ); } w.focus(); } function open_window_ext (loc) { self.name="main"; if ((navigator.appVersion.indexOf("MSIE 5.0") != -1) && (navigator.appName.indexOf("Explorer") != -1)){ var w = window.open ("","win2","height=500,width=500,scrollbars,resizable,toolbar,status,menubar"); w.document.write("\n"); w.document.write('\n"); w.document.write("\n"); w.document.close(); } else { var w = window.open (loc,"win2","height=500,width=500,scrollbars,resizable,toolbar,status,menubar"); } w.focus(); } function set_iframe_location(url,id){ eval('document.all.' + id).src = url; } function open_window_confirm (loc,frame) { self.name=frame; if ((navigator.appVersion.indexOf("MSIE 5.0") != -1) && (navigator.appName.indexOf("Explorer") != -1)){ var w = window.open ("","win1","height=220,width=450,scrollbars,resizable"); w.document.write("\n"); w.document.write('\n"); w.document.write("\n"); w.document.close(); } else { var w = window.open (loc,"win1","height=220,width=450,scrollbars,resizable"); } w.focus(); } function delete_win1 () { var w = window.open ("","win1","height=220,width=450,scrollbars,resizable"); w.close(); } function open_window_ill (loc) { if ((navigator.appVersion.indexOf("MSIE 5.0") != -1) && (navigator.appName.indexOf("Explorer") != -1)){ var w = window.open ("","win1","height=500,width=500,scrollbars,resizable"); w.document.write("\n"); w.document.write('\n"); w.document.write("\n"); w.document.close(); } else { var w = window.open (loc,"win1","height=500,width=500,scrollbars,resizable"); } w.focus(); } // -->

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Sys. no.	000636450
Topical Term	Firewalls (Computer security)
	‫ חומות אש (אבטחת מחשבים) ‬
S.F. Topical Term	Computer firewalls
	Internet firewalls
	Intranet firewalls
S.A. Topical Term	Computer networks -- Security measures
Source Data Found	Work cat.: Strebe, M. Firewalls, c2000.
	Gonçalves, M. Firewalls complete, 1998.
	Chapman, D. Building Internet firewalls, 1995.
	Cheswick, W. Firewalls and Intranet security, 1994.
	Pagan, K. Intranet firewalls, 1997.
	Gonçalves, M. Protecting your Web sites with firewalls, 1997.
	Hare, C. Internet firewalls and network security, 1996.
	WWWebster (firewall: a computer or computer software that prevents unauthorized access to private data (as on a company’s local area network or intranet) by outside computer users (as of the Internet))
Alma MMS ID	987007291711605171