CTF Challenges by Category
All Skills
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internet-protocols × 64
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computer-networks × 53
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networking × 43
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dns × 27
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network-protocols × 26
⭐
linux × 24
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osi-model × 23
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udp × 22
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network-security × 22
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protocols × 21
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http × 20
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web-development × 19
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tcp-ip × 17
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dhcp × 16
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css × 16
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tcp × 16
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network-topologies × 14
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arp × 14
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https × 14
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security × 13
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html × 13
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encryption × 12
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ip-addressing × 12
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networks × 11
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subnetting × 11
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routing × 11
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cybersecurity × 10
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ip-address × 9
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smtp × 8
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firewall × 8
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ipv4 × 8
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switching × 7
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basics × 7
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router × 7
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protocol × 7
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vpn × 7
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ip × 6
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subnet-mask × 6
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wireless-networks × 6
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email × 6
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mesh-topology × 6
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icmp × 6
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network-devices × 6
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html-elements × 6
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rarp × 6
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ip-addresses × 6
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data-transmission × 6
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ids × 6
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ssh × 5
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lan × 5
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commands × 5
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ping × 5
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port-number × 5
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ssl × 5
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network-topology × 5
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vlan × 5
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intrusion-detection × 5
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troubleshooting × 5
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firewalls × 5
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operating-systems × 5
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network-performance × 4
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devices × 4
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mac-address × 4
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web × 4
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star-topology × 4
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file-commands × 4
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python × 4
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telnet × 4
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network-troubleshooting × 4
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wireless-security × 4
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switch × 4
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ftp × 4
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directory-commands × 4
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front-end × 4
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bus-topology × 4
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reliability × 3
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internet-protocol × 3
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cli × 3
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data-integrity × 3
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ssl-tls × 3
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html-css × 3
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ports × 3
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characteristics × 3
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snmp × 3
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local-area-networks × 3
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virtual-memory × 3
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network-layer × 3
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ttl × 3
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domain-names × 3
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datagram × 3
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fault-tolerance × 3
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access-control × 3
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file-transfer × 3
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loops × 3
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traceroute × 3
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routing-table × 3
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ethernet × 3
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packet-loss × 3
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ring-topology × 3
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jquery × 3
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nat × 3
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authentication × 3
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port × 3
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redundancy × 2
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real-time-communication × 2
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nslookup × 2
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email-protocols × 2
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false-negative × 2
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firewall-rules × 2
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error-handling × 2
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web-application-security × 2
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python-programming × 2
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intrusion-detection-systems × 2
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version-control × 2
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directories × 2
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navigation × 2
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secure-communication × 2
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transport-protocols × 2
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applications × 2
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advantages × 2
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hybrid-topology × 2
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network-performance-optimization × 2
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load-balancing × 2
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honeypot × 2
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email-security × 2
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false-positive × 2
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cyber-attacks × 2
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basic × 2
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z-index × 2
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pop3 × 2
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topology × 2
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configuration × 2
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rtcp × 2
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netstat × 2
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sftp × 2
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performance × 2
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csrf × 2
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voip × 2
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control-flow-structures × 2
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engineering × 2
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file-directory-commands × 2
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openvpn × 2
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css-properties × 2
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checksum × 2
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communication × 2
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network × 2
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imap × 2
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real-time × 2
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tls × 2
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default-gateway × 2
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internet × 2
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directory × 2
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file-management × 2
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selectors × 2
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mpls × 2
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javascript × 2
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file-system × 2
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cyber-security × 2
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packet-switching × 2
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vpns × 2
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server × 2
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ipv6 × 2
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video × 2
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network-design × 2
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rtp × 2
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tcpip × 2
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hacking × 2