000 00333nam a2200133Ia 4500
008 131008s9999 xx 000 0 und d
082 _a91104 STR/PER
245 _aFirewalls 24 Seven
260 _bBpb Publications
_aNew Delhi
300 _axxiv,467
365 _cRs
546 _aEnglish
650 _aNetwork Security/Cryptography
999 _c118467
_d118467