Why does Red Hat Enterprise Linux not respond to SYN requests intermittently?
Issue
- Why does Red Hat Enterprise Linux intermittently not respond to SYN requests?
- Server does not answer some specific SYN Packets
- Webserver does not respond for sessions (SYN requests) sometimes
- SYN Packets being ignored occasionally by RHEL Apache server
- LDAP server occasionally dropping SYNs
- Any server, regardless of the application layer, may occasionally silently drop TCP packets with SYN flag set
- The Load Balancer which is between client and Red Hat servers is not getting response of SYN packets, the SYN-ACK from the RHEL server goes missing
- SYN sent through F5 is silently dropped by client
- What steps need to be taken when clients using TCP Timestamps are hidden behind a NAT?
- Is it safe to enable
net.ipv4.tcp_tw_recycleand/ornet.ipv4.tcp_tw_reusesysctl options in a NAT environment?
Environment
- Red Hat Enterprise Linux
- Network traffic using Transmission Control Protocol (TCP)
- Network with load balancer (such as BigIP F5) or a router which performs Network Address Translation (NAT)
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