| Observation | Implication | |-------------|--------------| | Log contains 10.16 (internal IP) | Likely from internal IDS/IPS, host firewall, or compromised machine beaconing. | | 1oo instead of 100 | Possible shell output where ASCII 0 replaced by letter o (binary-to-text artifact). | | ftp server explicitly stated | Unusual – typically only 220 banner or PORT command. Could be from service line in /etc/services or a honeypot label. |
ftp 10.16.x.x 244 If 244 is a – there is no standard FTP reply 244. FTP reply codes are 3-digit (x,y,z groups). 244 is invalid. So it’s likely a port or IP octet. 4. Security Implications Running FTP (plaintext protocol) on a non-standard port is a common obscurity tactic , not security. Attackers scan all 65535 ports. 10.16 1oo 244 ftp server
Locate the host, inspect FTP configuration, verify legitimate need for plaintext FTP, and consider migrating to SFTP/FTPS. Appendix: ASCII conversion of 1oo – 1 (0x31), o (0x6F), o (0x6F). Could be shell output misinterpreted as string. Could be from service line in /etc/services or
This is a curated technical analysis based on your query. The string "10.16 1oo 244 ftp server" appears to be a fragment of network reconnaissance data, likely from a penetration test, CTF challenge, or log entry. 244 is invalid
Below is a simulated interpreting this artifact. Security Analysis of an Anomalous FTP Artifact: 10.16 1oo 244 ftp server Document ID: FOR-2024-10.16 TLP: Clear 1. Abstract This paper analyzes a cryptic network log entry: 10.16 1oo 244 ftp server . We deconstruct the string into plausible components: an IP prefix ( 10.16 ), a numeric sequence ( 1oo 244 containing an octal-like 1oo ), and a service declaration ( ftp server ). We conclude this likely represents a corrupted or intentionally obfuscated banner from a misconfigured FTP server on a private network, with the 1oo suggesting octal interpretation of port or status codes. 2. Deconstruction & Interpretation | Token | Raw Value | Possible Meaning | |-------|-----------|------------------| | 10.16 | IP prefix | Class A private IPv4 address block (10.0.0.0/8). Suggests internal network. Complete IP likely 10.16.x.x . | | 1oo | Alphanumeric | Not standard decimal. Resembles 100 but with letters oo . Could be octal 100 (decimal 64) or leetspeak ( loo = 100?). | | 244 | Decimal | Common FTP port? No. Alternative: HTTP status 244 (unknown), or part of IP: 10.16.1.244 ? | | ftp server | Service | Explicit declaration. Likely from 220 welcome banner or login prompt. |
Search for surrounding entries. Look for USER anonymous , PASS , RETR to determine exploitation. 10.16 1oo 244 ftp server is most consistent with an FTP server running on private IP 10.16.1.100 at port 244 , where 1oo is a corrupted rendering of 100 (due to octal, font, or encoding error). No standard FTP reply code is 244, and 1oo has no valid FTP meaning.
"timestamp": "2024-10-16T??:??:??Z", "src_ip": "10.16.??.??", "dest_port": 244, "protocol": "TCP", "app_proto": "ftp", "banner": "1oo 244 ftp server"