← Port Encyclopedia
521

RIPng

UDP
Network Medium Risk
RIP next generation — IPv6 routing protocol

🔍 How to Scan Port 521

nmap -sV -p 521 target
nmap -sV -sC --script=banner -p 521 target
nc -zv target 521

🛡️ Security Considerations

  • Scan port 521 with nmap -sV to identify the exact service and version
  • If RIPng is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit ripng to find known exploits
  • Monitor traffic on port 521 with Wireshark or tcpdump for anomalies
  • Ensure the service is patched to the latest version to prevent known CVE exploitation

🔗 Related Network Ports

Port 67
DHCP-Server
Port 68
DHCP-Client
Port 161
SNMP
Port 162
SNMP-Trap
Port 179
BGP
Port 199
SMUX
Port 201
AppleTalk
Port 264
BGMP
Port 427
SLP
Port 520
RIP
Port 524
NCP
Port 646
LDP

📍 Nearby Ports

Port 516
Port-516
Port 517
Port-517
Port 518
Port-518
Port 519
Port-519
Port 520
RIP
Port 522
Port-522
Port 523
IBM-DB2
Port 524
NCP
Port 525
Port-525
Port 526
Port-526
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