Port 2305ArmA Multiplayer Voice Chat
This port is primarily used by the military simulation game ArmA for in-game Voice over Network (VoN) communications, typically serving as a supplementary port offset from the main game server port. It facilitates synchronized voice communication between players during multiplayer sessions, enhancing tactical gameplay..
- transport
- udp
- in transit
- cleartext
- assignment
- unofficial
- risk
- 4/10
- lookups
- 7,727
single transport
payload readable on path
used by convention
caution
rank 661 of 993 · top 67%
Technical Details
what runs on :2305Port 2305 is utilized as a default UDP port in ArmA multiplayer environments, specifically for Voice over Network (VoN) functionality. When hosting a dedicated server or peer-to-peer session, ArmA commonly designates port 2302 as the base port; 2305 serves as an offset (base+3) dedicated to managing VoIP streams embedded within the game. This separation helps optimize game data and voice traffic handling simultaneously.
Communication over this port mainly consists of real-time encoded audio packets transmitted between players, facilitating low-latency voice chat. The VoN system often employs codecs internally optimized for bandwidth efficiency within constrained network conditions. UDP is preferred as it supports quick delivery without the overhead or delays that TCP might introduce.
Typically, ArmA servers behind firewalls or NAT must have this port, along with adjacent game ports, properly forwarded to allow seamless client connectivity and minimize voice lag or packet loss. Most dedicated server documentation highlights opening port 2305 UDP as essential for full in-game voice functionality.
Security Information
exposure of :2305risk score
4/ 10caution
worth attention. how exposed you are depends on configuration — don't leave it reachable from the internet without a reason.
gaming averages 4.0 across 124 ports — this one sits level with it.
in transit
cleartext
credentials and payloads are readable by anyone on path
assignment
unofficial
used by convention, not registered — what answers here varies by deployment
reachable over
udp
udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite
security overview
Common vulnerabilities associated with port 2305 stem from its UDP nature, which is connectionless and thus susceptible to spoofing, amplification attacks, or exploitation via malformed packets. Attackers could target this port with denial-of-service attacks or attempt to exploit flaws in the game's VoN handling code, potentially leading to server performance degradation or security compromise.
Mitigations include:
- Restricting access to this port to known client IP ranges when feasible.
- Employing firewall rules to drop unexpected or invalid UDP packets.
- Ensuring the game server software is kept up-to-date with the latest security patches.
- Deploying network-based intrusion prevention systems capable of detecting abnormal UDP traffic patterns on this port.
- Rate limiting incoming UDP traffic to reduce the risk of amplification or flooding attacks.
Administrators should routinely monitor for unusual activity on this port and limit open exposure to only trusted game clients to reduce attack surfaces.
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0 of 8 encrypted