WebSep 30, 2008 · %ASA-4-419002: Received duplicate TCP SYN from in_interface:src_address/src_port to out_interface:dest_address/dest_port with different initial sequence number. Explanation This system log message indicates that establishing a new connection through the firewall device will result in exceeding at least one of the … WebJun 7, 2024 · Received duplicate TCP SYN from in_interface:src_address/src_port to out_interface:dest_address/dest_port with different initial sequence number. joaopaulomacedo Beginner Options 06-07-2024 08:12 AM We have a problem where the source IP is in the internal network and the destination in the VPN.
ASA Threat Detection Functionality and Configuration - Cisco
WebJan 4, 2024 · Deny TCP (no connection) from 45.60.133.51/25 to 103.X.X.128/1774 flags SYN ACK on interface OUTSIDE. My DMZ range IP is 103.X.X.0/24, and logs contain many ip in this range, but these ips have not be assigned for any server. I don't know routing is incorrect or my system is under Syn Attack. Please give me some suggest for this … WebJun 8, 2024 · 2024-04-14T08:08:23.110663-05:00 10.162.53.13 %FTD-4-419002: Duplicate TCP SYN from zone1:x.x.x.x/47322 to zone1:x.x.x.x/21 with different initial sequence number We are initiating a vulnerability scan from within our network and we receive the above syslog when the scan is running. siamese algae eater with shrimp
ASA/PIX 7.x and Later: Mitigating the Network Attacks
WebJan 29, 2024 · Duplicate TCP SYN from INSIDE: A /52565 to INSIDE: B /3389 with different initial sequence number Where IP "A" is Windows VM. Even when I shutdown VM with ip "A" I still see above logs. VM stays in ESX. Both ESX and ASA are connected to FEX ports. Does somebody have some ideas what is going on and how such "fake" … WebMar 10, 2014 · Explanation A duplicate TCP SYN was received during the three-way-handshake that has a different initial sequence number than the SYN that opened the embryonic connection. This could indicate that SYNs are being spoofed. This message occurs in Release 7.0.4.1 and later. •in_interface—The input interface WebJul 21, 2011 · A duplicate TCP SYN was received during the three-way-handshake that has a different initial sequence number than the SYN that opened the embryonic connection. This could indicate that SYNs are being spoofed. The firewall is doing its bit by dropping these duplicate packets and that's why you are seeing these error messages generated. siamese and abyssinian mix