Mixing
右安門
1920年代初的右安门箭楼、瓮城和城楼
右安門
右安门箭楼
右安門，俗稱豐宜門（因金中都豐宜門在其附近）或南西門。位於北京外城南垣西端，是北京外城七門之一。其城樓、瓮城、箭樓的規制與尺寸同左安門相同。1956年將瓮城、箭樓拆除，1958年將城樓拆除。
參考
- 北京城門
外部链接
- 右安门：不按左西右东起名 - 京报网
 | 维基共享资源中相关的多媒体资源：右安門 |
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1920年代初的右安门箭楼、瓮城和城楼
右安門
右安门箭楼
Information security
This article is part of a series on Information security Related security categories Internet security Cyberwarfare Computer security Mobile security Network security Threats Computer crime Vulnerability Eavesdropping Malware Spyware Ransomware Trojans Viruses Worms Rootkits Bootkits Keyloggers Screen scrapers Exploits Backdoors Logic bombs Payloads Denial of service Defenses Computer access control Application security Antivirus software Secure coding Secure by default Secure by design Secure operating systems Authentication Multi-factor authentication Authorization Data-centric security Encryption Firewall Intrusion detection system Mobile secure gateway Runtime application self-protection (RASP) v t e Information security , sometimes shortened to InfoSec , is the practice of preventing unauthorized access, use, disclosure, disruption, modification, inspection, recording or destruction of information. Th
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